TSL26721
Digital proximity detector, LED drvr., Vdd I2C interface
Features
- Patented dual-diode architecture
- Programmable proximity offset adjustment
- Proximity saturation indicator bit
- Programmable LED drive current
Benefits
- Enables operation in IR light environments
- Eliminates IR LED system cross talk
- Prevents false proximity detection in bright light
- Allows multiple power level selection without external passives
Product parameters
Supply Voltage [V] | 2.4 - 3.6 |
---|---|
I²C Bus | VDD |
Programmable | Gain, Integration time, Interrupt |
Integrated Capabilities and Components | |
Recommended Operating Distances [cm] | < 15, < 46 |
Temperature Range [°C] | -30 to 70 |
Package | FN, pin count 6 |

General description
The TSL2672 family of devices provides proximity detection when coupled with an external IR LED. The devices incorporate a constant-current LED sink driver to pulse the external IR LED and achieve very low average power consumption using the low power wait state with programmable wait time between proximity measurements. In addition, the devices are register-set and pin-compatible with the TSL2671 series and include a number of new and improved features, such as improved signal-to-noise and measurement accuracy. A proximity offset register allows compensation for optical system crosstalk between the IR LED and the sensor. To prevent false measurements, a proximity saturation bit indicates that the internal analog circuitry saturated. Interrupts have been enhanced with the addition of a sleep-after-interrupt feature that also allows for single-cycle operation.

This product suits for the following applications:
- Touchscreen control
- Notebook and monitor security
- Industrial process control
- Printer paper alignment and detection
- Optical switch

Tools
Title | Category | Headline | Buy |
---|---|---|---|
TSL2672EvalKit | Application Board | Evaluation Kit for TSL2672 |
Technical documents
Type | Description | Language | ||
---|---|---|---|---|
Datasheet | TSL2672 datasheet v1-01 | English | ||
Application Note | Signal, Noise, Offset and Proximity Sensors (DN33) | English | ||
Application Note | Signal, Noise, Offset - TSL2771 (DN33.1 Appendix) | English | ||
Application Note | Signal, Noise, Crosstalk - TCS3771 (DN33.2 Appendix) | English | ||
Application Note | Colorimetry Tutorial (DN 20) | English | ||
Application Note | Optimizing Proximity Parameters | English | ||
Application Note | Basic Pre-Production Light & Color Sensor Solution Validation Process | English |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
EoL Notification | Plano Test Site (issued May-20-2021) | English | ||
Product Change Notification | CN15-2016 (TSL26721, TMD27723) | English | ||
Product Change Notification | PCN42-2020 (issued 2020-Aug) | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | TSL2672 Block Diagram | English | ||
Factsheet | Proximity Detection Sensors | English |