TSL27721 Ambient Light Sensor
Light-to-digital converter with proximity sensing, I2C Vbus = VDD interface
Features
- Patented dual-diode architecture
- 8M:1 dynamic range
- UV rejection package
- Proximity offset adjustment
- Proximity saturation indicator bit
Benefits
- Enables operation in IR light environments
- Enables operation in 60K lux sunlight and accurate sensing behind spectrally distorting materials
- Improves lux accuracy across varying light sources
- Compensates for internal system offset or IR LED crosstalk
- Prevents false proximity detection in bright light
Product parameters
Supply Voltage [V] | 2.4 - 3.6 |
---|---|
I²C Bus | VDD |
Programmable | Gain, Integration time, Interrupt |
Integrated Capabilities | ALS, Prox, LED Drvr. |
Recommended Operating Distances [cm] | < 15, < 46 |
Temperature Range [°C] | −30 to 70 |
Package | FN, pin count 6 |

General description
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.

This product suits for the following applications:
- Display backlight control
- Touchscreen control
- Medical diagnostics
- Industrial process control
- Printer paper alignment and detection

Tools
Title | Category | Headline | Buy |
---|---|---|---|
TSL2772EvalKit | Application Board | Evaluation Kit for TSL2772 |
Technical documents
Type | Description | Language | ||
---|---|---|---|---|
Datasheet | Document version 2-00 | |||
Application Note | Using Interrupts and the Persistence Filter (DN 41) | English | ||
Application Note | TSL2771 I2C Communications & Proximity Algorithm (DN30A) | English | ||
Application Note | Colorimetry Tutorial (DN 20) | English | ||
Application Note | Basic Pre-Production Light & Color Sensor Solution Validation Process | English |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
Product Change Notification | PCN42-2020 (issued 2020-Aug) | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | TSL2772 Block Diagram | English | ||
Factsheet | Ambient Light Sensors and Proximity Detection | English |