Display management

ams OSRAM behind-OLED solutions enables mobile device manufacturers to maximize usable display without compromising on performance. Suitable for new generations of LTPO and Color-On-Encapsulant (CoE) displays.

Behind OLED solutions for light, color and proximity sensing

How can mobile devices maximize usable display without compromising on performance?

The mobile and computing markets continue to follow the industrial-design trend of maximizing screen-to-body ratios. Display size and quality are key buying considerations, as people use their devices throughout the day and in lighting conditions that can challenge the best display management solutions.

ams OSRAM develops and delivers industry-leading sensor solutions that promise excellent image quality and display functionality to meet manufacturer requirements for their bezel-less or small frame designs. Our technology leadership enables accurate ambient light, color, and proximity sensing solutions to operate behind OLED displays used in next-generation display technologies such as color-on-encapsulant (CoE) for rigid displays and foldable devices.

Our innovative packaging and silicon design mean we deliver sensing solutions that fit in the industry’s smallest aperture size behind the display. Our color sensors enable emissive (paper-like) displays by measuring the ambient light color point and adjusting the white balance of the screen – making text and images appear as if they were on printed paper.

In combination with our superior proximity detection solutions to turn the screen on/off when a user brings the phone close to their ear during a phone call, ams OSRAM offers a full suite of solutions to overcome even the trickiest of corner cases.

Behind OLED
The mobile handset market will continue to follow the trend to ever higher screen-to-body ratios and ultimately to all-screen, bezel-less smartphones in bar-type and foldable form factors. Technologies developed by ams OSRAM enable accurate ambient light, color and proximity sensing solutions to operate behind OLED displays used in these next generation mobile handsets. The award-winning TCS3720 color and proximity sensor from ams OSRAM enables front-facing ambient light and proximity sensing measurements in smartphones – maximizing edge-to-edge display screen size – with sensor operation under OLED display.

Paper-like displays

Spectral color sensors from ams OSRAM enable display controllers to shift the white point of the display in response to changes in the color temperature of ambient light: the effect is to make text as readable on the display as it is when printed in a book.

By shifting the display’s white point to a warmer color temperature, in which there is less blue light, the display controller also minimizes eye strain caused by prolonged viewing and can reduce the risk of sleep disturbance attributable to use of the display.

The new TCS3530 is an ultra-sensitive color sensor that matches the response of the human eye to visible light (XYZ). The sensor's highly accurate measurements of chromaticity and illuminance support sophisticated display color management. The integrated optical assembly with built-in diffuser backed by end-of-line calibration simplifies production processes and optical designs.

Sign up to access our white paper to learn more about this exciting application

True-to-life color displays with spectral color sensing behind OLED

Form loading...

The human eyes are drawn to displays that deliver natural, consistent color and optimal brightness across all lighting conditions. Achieving this requires precise, real-time ambient light measurements - especially when sensors operate behind the phone’s OLED display. Our spectral sensors with advanced ALS technology enable smartphones to display content exactly as intended, everywhere you go. High quality displays stand out with true-to-life color and appropriate brightness for paper-like eye comfort.

I agree to the processing of my data for registration purposes, as described in privacy policy.*

I would like ams OSRAM to use my e-mail address for the purposes of personalised and generalized advertising and marketing communication related to the products of ams OSRAM.

Your data is used only for internal purposes related to the registration process.

All fields marked with an asterisk(*) must be filled out.

Device name

Description

Product Area

Product Type

ams TCS3448 Spectral Color Sensor

The TCS3448 is a 14-channel highly versatile, multi-purpose spectral light sensor. It is optimized to sense spectral components of ambient light in the visible range. Such spectral information is used for camera enhancement (CCT, AWB, exposure time).<br><br> The spectral response is defined by individual channels covering approximately 380 nm to 1000 nm with 11 channels centered in the visible spectrum (VIS), plus one near-infrared (NIR) and a clear channel. Applications can be assisted to allow classification of ambient light and an integrated flicker detection channel that can automatically flag ambient light flicker at 50/60 Hz as well as buffer data for externally calculating other flicker frequencies.<br><br> TCS3448 integrates high-precision optical interference filters directly deposited on photodiodes which are embedded in CMOS silicon. A built-in aperture controls the light entering the sensor array to increase accuracy. A programmable digital GPIO and LED driver enable light source and trigger/sync control. Device control and spectral data access is implemented through a serial I²C 1.2 V/1.8 V interface. The device is available in an ultra-low profile package with dimensions of 3.1 mm x 2 mm x 1 mm.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD3719 ALS/Color and Proximity Sensor

The TMD3719 features ambient light and color (RGB) sensing, flicker detection and proximity detection. The device integrates three IR VCSELs and an advanced VCSEL driver within a low-profile 6.35mm x 3.00mm x 1.00mm package. <br> The ambient light and color sensing function provides six concurrent ambient light sensing channels: Red, Green, Blue, Clear, Leakage and Wideband. The RGBL and Clear channels have a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of illuminance, chromaticity, and color temperature to manage display appearance. The device integrates direct detection of ambient light flicker for 4 selectable frequency bins. Flicker detection is executed in parallel with ambient light and color sensing. The flicker detection engine can also buffer data for calculating other flicker frequencies externally. The proximity function synchronizes IR emission and detection to sense nearby objects. The architecture of the engine features self-maximizing dynamic range, ambient light subtraction, advanced crosstalk cancelation, and interrupt-driven I²C communication. Sensitivity, power consumption, and noise can be optimized with adjustable IR VCSEL timing and power. The proximity engine recognizes detect/release events and produces a configurable interrupt whenever the proximity result crosses upper or lower threshold settings.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD3721 Advanced ALS/Color and Proximity Sensor Module for Behind-OLED Applications

The TMD3721 features ambient light, color (RGB) sensing and proximity detection. The device integrates an IR VCSEL and an advanced VCSEL driver within a compact 4.65mm x 1.86mm x 0.90mm OLGA package.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2520 - Ambient Light Sensor

The TSL2520 features ambient light sensing and comes in a low-profile and small footprint, L2.0mm x W1.0mm x H0.5mm optical QFN package. The Ambient Light Sensing function provides two concurrent ambient light sensing channels, which can be arbitrarily connected to the photodiodes via a programmable multiplexer. TSL2520 incorporates a set of infrared photodiodes and a set of clear photodiodes. The clear photodiode area is covered with a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of irradiance of different light sources. Calculation results help to improve display appearance and picture taking.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

OSRAM BIDOS™ E1005 L, PLPVYL1 940A_E

VCSEL (940 nm) P<sub>opt,typ</sub> = 11 mW

Lasers

IR Lasers (VCSEL)

OSRAM SIDELED™, SFH 325

Silicon NPN Phototransistor in SMT Package

Photodetectors

Phototransistors

OSRAM SIDELED™, SFH 325 FA

Silicon NPN Phototransistor in SMT SIDELED™-Package

Photodetectors

Phototransistors

OSRAM TOPLED™, SFH 4243

High Power Infrared Emitter (940 nm)

LEDs

IR LEDs

OSRAM SIDELED™, SFH 4244

Infrared Emitter (940 nm)

LEDs

IR LEDs

OSRAM TOPLED™ Reverse Gullwing Lens, SFH 4246R

Infrared Emitter (940 nm) - 24 °

LEDs

IR LEDs

OSRAM Mini TOPLED™, SFH 4247

Infrared Emitter (940 nm)

LEDs

IR LEDs

OSRAM TOPLED™, SFH 4253

High Power Infrared Emitter (850 nm)

LEDs

IR LEDs

OSRAM TOPLED™, SFH 4253R

High Power Infrared Emitter (850 nm)

LEDs

IR LEDs

OSRAM SIDELED™, SFH 4255

Infrared Emitter (850 nm)

LEDs

IR LEDs

OSRAM SIDELED™, SFH 4256

Infrared Emitter (850 nm)

LEDs

IR LEDs

ams TCS3408 Color Sensor

The TCS3408 is an ultra-high sensitivity light-to-digital converter that features ambient light and color (RGB) sensing and selective flicker detection. The ambient light and color sensing function provide five concurrent ambient light sensing channels: Red, Green, Blue, Clear, and Wideband. The RGB and Clear channels have a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of illuminance, chromaticity, and color temperature to manage display appearance. The architecture of the engine features self-maximizing dynamic range, ambient light subtraction, data output and interrupt-driven 1.8V I²C communications interface. The device integrates direct detection of 50Hz or 60Hz ambient light flicker. Flicker detection is executed in parallel with ambient light and color sensing has independent gain configuration and also suppresses cross-coupling from any 940nm IR, if generated by adjacent circuits (e.g. from a Time-of-Flight sensor). The flicker detection engine can also buffer data for calculating other flicker frequencies externally.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TCS3410 Color and Flicker Detection Sensor

The TCS3410 features ambient light sensing, as well as flicker detection. The device comes in a low-profile and small footprint, L2.0mm x W1.0mm x H0.5mm optical QFN package. The Ambient Light Sensing function provides three concurrent ambient light and flicker sensing channels, which can be arbitrarily connected to the photodiodes via a programmable multiplexer. TCS3410 incorporates a set of RGB photodiodes and a Clear photodiode. The RGB and Clear photodiode area is covered with a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of irradiance of different light sources. Calculation results help to improve display appearance and picture taking. The device also integrates direct detection of ambient light flicker. Flicker detection is executed in parallel with ambient light sensing and has independent gain configuration. The flicker detection engine will sample and buffer data for calculating flicker frequencies externally on a host CPU.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TCS3530 True Color Sensor with Flicker Detection

TCS3530 is an ultra-sensitive color sensor that matches the response of the human eye to visible light. The sensor’s highly accurate measurements of chromaticity and illuminance support superior automatic white balancing in cameras, as well as sophisticated display color management. Fully integrated optical assembly with built-in diffuser backed by end-of-line calibration simplifies manufacturers’ production processes and optical designs.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TCS3701 Color and Proximity Sensor

The TCS3701 is a very-high sensitivity light-to-digital converter that features ambient light and color (RGB) sensing in parallel with IR proximity detection. The Ambient light and color sensing function provides five concurrent ambient light sensing channels: Red, Green, Blue, Clear, and Wideband. The RGB and Clear channels have a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of illuminance, chromaticity, and color temperature to manage display appearance. The proximity function synchronizes IR emission and detection to sense nearby objects. The IR driver needs to be connected to an external LED or VCSEL emitter. The architecture of the engine features self-maximizing dynamic range, ambient light subtraction, advanced optical crosstalk noise cancellation, 14-bit data output and interrupt-driven 1.8V I²C communications interface. Sensitivity, power consumption, and noise can be optimized with adjustable IR LED timing and power. The proximity engine recognizes detect/release events and produces a configurable interrupt whenever the proximity result crosses upper or lower threshold settings.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TCS3707 Color and Proximity Sensor

The TCS3707 is a very-high sensitivity light-to-digital converter that features ambient light and color (RGB) sensing, proximity and flicker detection. The Ambient light and color sensing function provide five rrent ambient light sensing channels: Red, Green, Blue, Clear, and Wideband. The RGB and Clear channels have a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of illuminance, chromaticity, and color temperature to manage display appearance. The proximity function synchronizes IR emission and detection to sense nearby objects. The IR driver needs to be connected to an external LED or VCSEL emitter. The architecture of the engine features self-maximizing dynamic range, ambient light subtraction, advanced optical crosstalk noise cancellation, data output and interrupt-driven 1.8V I²C communications interface. Sensitivity, power consumption, and noise can be optimized with adjustable IR LED timing and power. The device integrates direct detection of 50Hz or 60Hz ambient light flicker. Flicker detection is executed in parallel with ambient light and color sensing and has independent gain configuration. The flicker detection engine can also buffer data for calculating other flicker frequencies externally.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TCS3720 ALS/Color and Proximity Sensor

The TCS3720 features ambient light, color (RGB) sensing and proximity detection. The device integrates two advanced emitter drivers within a compact 3.34mm x 1.36mm x 0.6mm OLGA package.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD26721

The TMD2672 family of devices provides a complete proximity detection system and digital interface logic in a single 8-pin surface mount module. The device is register-set and pin-compatible with the TMD2671 series and includes new and improved proximity detection features. The proximity detection includes improved signal-to-noise and accuracy. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the internal analog circuitry has reached saturation. Interrupts have been enhanced with the addition of a sleep-on-interrupt feature that also allows for a single cycle operation. The device internal state machine provides the ability to put the device in a low power mode in between proximity measurements, providing very low average power consumption.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD26723

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD2712 ALS and Proximity Sensor

The TMD2712 features proximity detection and digital ambient light sensing (ALS). The extremely tiny 1mm x 2mm module incorporates an IR VCSEL and factory calibrated VCSEL driver. The proximity detection feature provides object detection (e.g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated VCSEL). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features a wide range offset adjustment to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS and IR photodiodes have dedicated data converters producing 16-bit data. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance to control display backlight.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD2725 Ambient Light Sensor

The device features advanced proximity measurement and digital ambient light sensing (ALS). The package has been designed to accommodate a single small aperture approach. The module incorporates an IR LED and factory calibrated LED driver. The proximity detection feature provides object detection (e.g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated LED). Detect/Release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features offset adjustment registers to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS detection feature provides photopic light intensity data. The ALS photodiode has UV and IR blocking filters and a dedicated data converter producing 16-bit data. This architecture allows applications to ccurately measure ambient light which enables devices to calculate illuminance to control display backlight.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD2755 ALS and Proximity Sensor

The TMD2755 features proximity detection and digital ambient light sensing (ALS). The extremely narrow 1.1mm module incorporates an IR VCSEL and factory calibrated VCSEL driver. The proximity detection feature provides object detection (e.g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated VCSEL). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features a wide range offset adjustment to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS and IR photodiodes have dedicated data converters producing 16-bit data. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance to control display backlight.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD27721WA Digital Ambient Light Sensor

The TMD2772WA family of devices provides digital ambient light sensing (ALS), a complete proximity detection system, and digital interface logic in a single 8-pin surface mount module. The devices are register-set and pin-compatible with the TMD2771 family of devices and include new and improved ALS and proximity detection features and are available with 25° and 50° fields of view. The ALS enhancements include a reduced gain mode that extends the operating range in sunlight. Proximity detection includes improved signal-to-noise performance and more accurate factory calibration. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the internal analog circuitry has reached saturation.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD27723 Ambient Light Sensor

The TMD2772 family of devices provides digital ambient light sensing (ALS), a complete proximity detection system, and digital interface logic in a single 8-pin surface mount module. The devices are register-set and pin-compatible with the TMD2771 family of devices and include new and improved ALS and proximity detection features. The ALS enhancements include a reduced gain mode that extends the operating range in sunlight. Proximity detection includes improved signal-to-noise performance and more accurate factory calibration. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false proximity data measurement readings, a proximity saturation indicator bit signals that the internal analog circuitry has reached saturation.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD3725 Color Sensor Module

The TMD3725 features advanced proximity measurement, color sense (RGBC+IR), and digital ambient light sensing (ALS). The package has been designed to accommodate a “single hole” aperture approach. The slim module incorporates an IR LED and factory calibrated LED driver. The proximity detection feature provides object detection (e.g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated LED). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features offset adjustment registers to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS detection feature provides photopic light intensity data. The color photodiodes have UV and IR blocking filters and converts photodiode current into dedicated integrating data converters producing 16-bit data. This digital output can be interfaced with a microprocessor where illuminance and color temperature can be calculated to control a displays backlight and chromaticity.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2521 - Ambient Light Sensor with Flicker Detection

The TSL2521 features ambient light sensing, as well as flicker detection. The device comes in a low-profile and small footprint, L2.0mm x W1.0mm x H0.5mm optical QFN package. The Ambient Light Sensing function provides two concurrent ambient light sensing channels, which can be arbitrarily connected to the photodiodes via a programmable multiplexer. TSL2521 incorporates a set of Infrared photodiodes and a set of clear photodiodes. The clear photodiode area is covered with a UV/IR blocking filter. This architecture accurately measures ambient light and enables the calculation of irradiance of different light sources. Calculation results help to improve display appearance and picture taking. The device also integrates direct detection of ambient light flicker. Flicker detection is executed in parallel with ambient light sensing and has independent gain configuration. The flicker detection engine will sample and buffer data for calculating flicker frequencies externally on a host CPU.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2540 Ambient Light Sensor

The TSL2540 is a very-high sensitivity light-to-digital converter that approximates the human eye response to light intensity under varying lighting conditions and transforms this light intensity to a digital signal output capable through a 1.8V I²C interface. The ALS sensor features 2 output channels, a visible channel and an IR channel. The visible channel has a photodiode with a photopic Interferometric UV and IR blocking filter and the IR channel has a photodiode with an IR pass filter. Each channel has a dedicated integrating data converter which converts photodiode current into a 16-bit digital output. This digital output can be interfaced with a microprocessor where illuminance in lux is derived to accurately measure ambient light to control a displays backlight.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2541 Ambient Light Sensor

The TSL2541 is a very-high sensitivity light-to-digital converter <br> that has a dark mold compound package which enables concealment behind inked glass. It approximates the human eye response to light intensity under varying lighting conditions and transforms this light intensity to a digital signal output capable through a 1.8V I²C interface. The ALS sensor features 2 output channels, a visible channel and an IR channel. The visible channel has a photodiode with a photopic Interferometric UV and IR blocking filter and the IR channel has a photodiode with an IR pass filter. Each channel has a dedicated integrating data converter which converts photodiode current into a 16-bit digital output. This digital output can be interfaced with a microprocessor where illuminance in lux is derived to accurately measure ambient light to control a displays backlight.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL25721 Ambient Light Sensor

TSL2572 device family provides ambient light sensing (ALS) that approximates human eye response to light intensity under a variety of lighting conditions and through a variety of attenuation materials. Accurate ALS measurements are the result of TAOS’ patented dual-diode technology and the UV rejection filter incorporated in the package. The operating range can be extended to 60000 LUX when the low-gain mode is use. The TSL2572 device is particularly useful for enabling automatic brightness control (ABC) in large LCD flat-panel TVs and displays by providing optimum viewing in diverse lighting conditions (daytime versus nighttime viewing) while significantly reducing energy consumption to meet the stringent ENERGY STAR requirements.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL25723 Ambient Light Sensor

The TSL2572 device family provides ambient light sensing (ALS) that approximates human eye response to light intensity under a variety of lighting conditions and through a variety of attenuation materials. Accurate ALS measurements are the result of ams’ patented dual-diode technology and the UV rejection filter incorporated in the package. In addition, the operating range is extended to 60000 lux in sunlight when the low-gain mode is used.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2584TSV Ambient Light Sensor

The TSL2584TSV is a very high sensitivity light-to-digital converter that transforms light intensity into a digital signal output with a fast mode I²C interface. The device combines one broadband photodiode (visible plus infrared), one infrared-responding photodiode, and a photopic infrared-blocking filter on a single CMOS integrated circuit. Two integrating analog-to-digital converters (ADCs) convert the photodiode currents into a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2584TSV supports a traditional level style interrupt that remains asserted until the firmware clears it.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2585 light sensor with UVA detection

<div>TSL2585 is a mini size ambient light sensor with UVA and light flicker detection, comes in a very low-profile and small footprint L2.0mm x W1.0mm x H0.35mm 6-pin OLGA package, perfectly fits wearable and mobile phone applications which are usually very space and height constrained.</div><div>The high sensitivity enables the device to work behind a low transmissivity covering glass providing an accurate ALS detection. In addition, TSL2585 has a special edge-located photodiode placement which allows for a narrow bezel design down to 0.4mm width when the device is placed very close to the product edge. Fulfilling requirements of today's industrial design of designing bezel-less products for a good looking appearance.</div>

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL25911 Ambient Light Sensor

The TSL2591 is a very high sensitivity light-to-digital converter that transforms light intensity into a digital signal output capable of direct I2C interface. The device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit. Two integrating ADCs convert the photodiode currents into a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2591 supports a traditional level style interrupt that remains asserted until the firmware clears it.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2740 Ambient Light Sensor

The TSL2740 includes both proximity detection and very-high sensitivity light-to-digital converter ambient light sensing (ALS) features. The proximity detection feature provides object detection using photodiode detection with reflected IR energy. The detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features offset adjustment registers to compensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS feature approximates the human eye response to light intensity under varying lighting conditions and transforms this light intensity to a digital signal output capable through a 1.8V I²C interface. The ALS sensor features 2 output channels, a visible channel and an IR channel. The visible channel has a photodiode with a photopic Interferometric UV and IR blocking filter and the IR channel has a photodiode with an IR pass filter. Each channel has a dedicated integrating data converter which converts photodiode current into a 16-bit digital output. This digital output can be interfaced with a microprocessor where illuminance in lux is derived to accurately measure ambient light to control a displays baklight.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL27721 Ambient Light Sensor

The TSL2772 device family provides both ambient light sensing (ALS) and, when coupled with an external IR LED, proximity detection. The device family is based on the TAOS patented dual-diode technology that enables accurate ALS results and approximates human eye response to light intensity under a variety of lighting conditions.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams AS7341 – 11-Channel Spectral Color Sensor

AS7341 is an 11-channel multi-spectral sensor for color detection and spectral analysis applications. The spectral response is defined in the wavelengths from approximately 350nm to 1000nm. 6 channels can be processed in parallel by independent ADCs while the other channels are accessible via a multiplexer. 8 optical channels cover the visible spectrum, one channel can be used to measure near infra-red light and one channel is a photo diode without filter (“clear”). The device also integrates a dedicated channel to detect 50Hz or 60Hz ambient light flicker. The flicker detection engine can also buffer data for calculating other flicker frequencies externally. The NIR channel in combination with the other VIS channel may provide information of surrounding ambient light conditions (light source detection). The device can also be synchronized to external signals via pin GPIO. <br> AS7341 integrates filters into standard CMOS silicon via Nano-optic deposited interference filtertechnology and its package provides a built in aperture to control the light entering the sensor array. <br> Control and Spectral data access is implemented through a serial I²C interface. The device is available in an ultra-low profile package with dimensions of 3.1mm x 2mm x 1mm.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams AS7343 Spectral Sensor

<div>The AS7343 is a 14-channel highly versatile, multi-purpose spectral sensor enabling new consumer, commercial, industrial and laboratory applications. It is optimized for reflective, transmissive and emissive measurements including color matching, fluid or reagent analysis or general spectral reconstruction.</div><div><br></div><div>The spectral response is defined by individual channels covering approximately 380 nm to 1000 nm with 12+2 channels: 12 in the visible spectrum (VIS) to near-infrared (NIR) range, a clear channel and flicker channel. Applications can be assisted by full spectral reconstruction of light and an integrated flicker detection channel that can automatically flag ambient light flicker at 50/60 Hz as well as buffer data for externally calculating other flicker frequencies. </div><div><br></div><div>AS7343 integrates high-precision optical filters onto standard CMOS silicon via deposited interference filter technology. A built-in aperture controls the light entering the sensor array to increase accuracy. A programmable digital GPIO and LED driver enable light source and trigger/sync control. Device control and spectral data access is implemented through a serial I²C interface. The device is available in an ultra-low profile package with dimensions of 3.1 mm x 2 mm x 1 mm.</div>

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2569 Ambient Light Sensor

The TSL2569 is a low-voltage, light-to-digital converter that transforms light intensity to a digital signal output capable of direct I2C interface. Each device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near photopic response over an effective 20-bit dynamic range (16-bit resolution). Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2569 device supports a traditional level style interrupt that remains asserted until the firmware clears it.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2580 Ambient Light Sensor

The TSL2580 is a very high sensitivity light-to-digital converter that transforms light intensity to a digital signal output capable of SMBus (TSL2580) interface. Each device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near photopic response over an effective 16-bit dynamic range (16-bit resolution). Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2580 device permits an SMB-Alert style interrupt, remains asserted until the firmware clears it.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TCS34725 Color Sensor

The TCS3472 device provides a digital return of red, green, blue (RGB), and clear light sensing values. An IR blocking filter, integrated on-chip and localized to the color sensing photodiodes, minimizes the IR spectral component of the incoming light and allows color measurements to be made accurately. The high sensitivity, wide dynamic range, and IR blocking filter make the TCS3472 an ideal color sensor solution for use under varying lighting conditions and through attenuating materials. This data is transferred via an I2C to the host.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD3702VC Color Light Sensor

The TMD3702VC is a high sensitivity light-to-digital converter that features ambient light and color (RGBC+IR) sensing in parallel with advanced IR proximity detection. The Ambient light and color sensing function provides four concurrent ambient light sensing channels: Red, Green, Blue, and Clear, which all have a UV/IR blocking filter. The ultra-slim 1.44mm wide package has been designed to accommodate a “single hole” aperture approach and incorporates an IR VCSEL that is factory calibrated driver. This product accurately measures ambient light and enables the calculation of illuminance, chromaticity, and color temperature to manage display appearance. The proximity function synchronizes IR emission and detection to sense nearby objects through photodiode detection of this reflected IR energy. Sensitivity, power consumption, and noise can be optimized with adjustable timing and power and the color photodiodes have dedicated data converters producing 16-bit data output. The prox architecture of the engine features self-maximizing dynamic range, ambient light subtraction, advanced optical crosstalk noise cancellation, 14-bit data output and interrupt-driven 1.8V I²C communications interface. The proximity engine recognizes detect/release events and produces a configurable interrupt whenever the proximity result crosses upper or lower threshold settings.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMD4903 Color Sensor Module

The TMD4903 features include color sensing (RGB), ALS, proximity detection and an IRBeam optical pattern generator capable of mobeam™ barcode emulation and universal remote control. In addition, it includes an integrated LED and advanced LED driver in a low profile and small footprint 2.0mm x 5.0mm x 1.0mm optical module.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TMG4903 Optical Sensor

The TMG4903 device family features a slim modular package, 2.0mm x 5.0mm x 1.0mm and incorporates an IR LED and factory calibrated LED driver. The device exhibits advanced 3D gesture detection, proximity detection, digital ambient light sense (ALS), color sense (RGBC).

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors

ams TSL2522 - Ambient Light Sensor with Flicker Detection

The TSL2522 features ambient light sensing and light flicker detection. The device comes in a low-profile and small footprint, L2.0mm x W1.0mm x H0.5mm OLGA package. The Ambient Light Sensing function provides two concurrent ambient light sensing channels, which can be arbitrarily connected to the photodiodes via a programmable multiplexer. The device incorporates a set of Photopic photodiodes and a set of Infrared photodiodes.

Sensor solutions

Ambient light, Color, Spectral & Proximity Sensors