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 1-00 | English | ||
| 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 |
Related boards
Evaluation Kit for TSL2772
TSL2772EvalKit
The TSL2772 Evaluation Kit comes with everything needed to evaluate the TSL2772 proximity and ambient light sensor. The evaluation kit comprises of a main controller board with a PIC microcontroller, an industry standard USB 2.0 interface (with an USB cable), a TSL2772 daughter card, "plug-n-play" USB HID class drivers, software documentation, and GUI software allowing users to control the ALS and proximity sensor settings as the PIC takes the TSL2772 I2C digital outputs to calculate ALS illuminance in lux approximating the human eye response.