AS7261 Spectral Sensing Engine
Tri-stimulus XYZ + NIR sensor device with electronic shutter and smart interface
Features
- Tri-stimulus XYZ+NIR realized by silicon interference filters
- Selectable UART or I²C interface
- 16-bit ADC with digital access
- Integrated programmable LED drivers
- integrated micro controller
- 20-pin LGA package 4.5mm x 4.7mm x 2.5mm, with built-in aperture
- In-factory calibrated
Benefits
- Stable filter conditions over temperature and life time
- Compact true-color sensing, XYZ coordinates direct from the sensor
- Signal processing on chip, reduced hardware costs
- Sample illumination without external LED driver
- Easy connecting to mobile devices or external µController
Product parameters
| Sensor Type | XYZ tri-stimulus/standard observer |
|---|---|
| Applications | Color analysis and color calibration |
| I/O | I²C master or UART (mode configurable) |
| Package | 20-pin LGA with aperture |
| Size [mm] | 4.5 x 4.7 x 2.5 |
| Supply Voltage [V] | 2.7 to 3.6 |
| Temperature Range [°C] | -40 to +85 |
General description
The AS7261 integrates Gaussian interference filter technology to enable chromatic white color sensor which provides direct XYZ color coordinates consistent with the CIE 1931 2° standard observer color coordinates. Additional mapping of XYZ coordinates to the x, y (Y) of the 2-dimensional color gamut and scales of the CIE 1976 u’v’ coordinate system, providing accurate correlated color temperature (CCT) measurements and color point deviation from the black body curve for white light color in the ∆u’v’ coordinate system. A near-IR channel and LED drivers with programmable currents increase application flexibility, including support for electronic shutter applications.
Control and spectral data access is implemented either through either the I²C virtual register set, or via the serial UART enabling use of the high level smart spectral command set.
This product suits for the following applications:
- Color/CCT sensing
- Fluid or reagent analysis
- Color point comparison
- Display calibration
- Authentication
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| AS726xDemoKit | Application Board | Demo Kit for AS726x |
Resources
| Type | Description | Language | ||
|---|---|---|---|---|
| Application Data | Reference Design and Schematic AS726x 1V1 | English | ||
| Evaluation Software | AS72xx_EvalSW_v5-1-0.zip AS72xx Firmware Update using GUI | EN | ||
| Evaluation Software | AS726x_EvalSW_v3-4-2.zip AS726x Spectral Sensing iSPI GUI | EN |
Technical documents
| Type | Description | Language | ||
|---|---|---|---|---|
| Datasheet | Document version 1-00 | English | ||
| Application Note | AS72xx – EEPROM Updating using I2C 1V02 | English | ||
| Application Note | AS726x Design Considerations | English | ||
| Application Note | AS72xx How to Flash AS72xx Firmware using | English | ||
| Application Note | AS72xx How to Program AS72xx Firmware with FlashCatUSB 1V24 | English | ||
| Quick Start Guide | AquaSensor Quick Start Guide for Hardware and Software based on AS7261 | English | ||
| User Guide | AS726x-iSPI Evaluation Kit User Guide | English | ||
| User Guide | AS726x-iSPI Evaluation Kit GUI User Guide | English |
Environmental documents
| Type | Description | Language | ||
|---|---|---|---|---|
| RoHS Certificate | RoHS AS7261 | English |
Notifications
| Type | Description | Language | ||
|---|---|---|---|---|
| Product Change Notification | CN25-2019 (Customer Information AS72xx) | English |
Other information
| Type | Description | Language | ||
|---|---|---|---|---|
| Block Diagram | AS7261 Block Diagram | English | ||
| Factsheet | AS7261 Spectral_ID a new class of Spectral Sensing Products | English |
Related boards
Demo Kit for AS726x
AS726xDemoKit
The AS726x Demo Kit is a Windows PC-hosted evaluation environment, designed to provide the user an quick-start approach to spectral sensing. The demo kit consists of the Intelligent Spectral Interface (iSPI) board, USB/FTDI cable, and a USB stick which includes drivers, documentation and graphical user interface. The iSPI board is jumper selectable for either I2C or UART interface access via the USB/FTDI cable connection. The I2C interface presents a traditional register based device interface, while the UART interface allows high-level command access to the AS726x device features. The iSPI board includes unpopulated device pads for the installation of standard LED light sources suited to the specific spectral needs of the application. By default, the LED pads are unpopulated.
Related products
AS7261N - Spectral Sensor
AS7261N
The AS7261N provides direct XYZ sensor data which conforms to the tri-stimulus standard observer color response of the human eye. A near-IR channel and LED drivers with programmable currents increase application flexibility, including support for electronic shutter applications.The AS7261N integrates Gaussian filters into standard CMOS silicon via nano-optic deposited interference filter technology and is packaged in an LGA package that provides a built in aperture to control the light entering the sensor array.
Control and spectral data access is implemented through an I²C register set.
Not Recommended for New Designs
ams-OSRAM AG does not recommend using this product for new designs. Please see AS7261 for possible replacement or contact your local sales representative for further information.
Control and spectral data access is implemented through an I²C register set.
Not Recommended for New Designs
ams-OSRAM AG does not recommend using this product for new designs. Please see AS7261 for possible replacement or contact your local sales representative for further information.
AS7262 Consumer Grade Smart 6-Channel VIS Sensor
AS7262
The AS7262 is a cost-effective multispectral sensor-on-chip solution designed to address spectral ID applications. This highly integrated device delivers 6-channel multispectral sensing in the visible wavelengths from approximately 430nm to 670nm with full-width half-max (FWHM) of 40nm. An integrated LED driver with programmable current is provided for electronic shutter applications.
The AS7262 integrates Gaussian filters into standard CMOS silicon via nano-optic deposited interference filter technology and is packaged in a LGA package that provides a built in aperture to control the light entering the sensor array. Control and spectral data access is implemented through either the I²C register set, or with a high level AT spectral command set via a serial UART.
Not Recommended for New Designs
ams-OSRAM AG does not recommend using this product for new designs. Please see AS7341 for possible replacement or contact your local sales representative for further information.
The AS7262 integrates Gaussian filters into standard CMOS silicon via nano-optic deposited interference filter technology and is packaged in a LGA package that provides a built in aperture to control the light entering the sensor array. Control and spectral data access is implemented through either the I²C register set, or with a high level AT spectral command set via a serial UART.
Not Recommended for New Designs
ams-OSRAM AG does not recommend using this product for new designs. Please see AS7341 for possible replacement or contact your local sales representative for further information.
AS73211 - JENCOLOR® Digital XYZ Sensor
AS73211
The AS73211 is a digital XYZ sensor with I2C interface for relative and absolute color measurement and control. The combination of True Color XYZ sensitized photodiodes with a filter function based on the standard CIE 1931/DIN 5033 (human eye perception) and used interference filter technology as leading and most accurate technology of three-range sensors makes the AS73211 more accurate than RGB sensors and guarantee this function without spectral changings over lifetime. The AS73211 is designed with a high dynamic range to measure any light in the visible range (VIS) in environments from sunlight to dark rooms, dimmed LEDs, or dark colored monitors.
TCS3430 Tristimulus Color Sensor
TCS3430
The device features advanced digital ambient light sensing (ALS) and CIE 1931 tristimulus color sensing (XYZ). Each of the channels has a filter to control its optical response, which allows the device to accurately measure ambient light and sense color. These measurements are used to calculate chromaticity, illuminance and color temperature, all of which are used to support various potential applications.
The TCS3430 is ideally suited for use in smartphone applications to improve color measurement and intensity of ambient light conditions. The sensor can also be used to assist the smartphone camera sensor with color sensing of ambient light to enhance and improve picture white balance to deliver more realistic and vibrant images.
The TCS3430 is ideally suited for use in smartphone applications to improve color measurement and intensity of ambient light conditions. The sensor can also be used to assist the smartphone camera sensor with color sensing of ambient light to enhance and improve picture white balance to deliver more realistic and vibrant images.