Digital ALS and Proximity Module Board - TMD2772

The TMD2772 family of devices provides digital ambient light sensing (ALS), a complete proximity detection system, and digital interface logic in a single 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

Ambient Light Sensing, Proximity Detection, and IR LED in a Single Module
Register Set- and Pin-Compatible with the TMD2771 Series
Ambient Light Sensing (ALS)
Approximates Human Eye Response
Programmable Analog Gain and Integration Time
8,000,000:1 Dynamic Range
Very High Sensitivity
Ideally Suited for Operation Behind Dark Glass
Proximity Detection
Reduced Proximity Count Variation *
Programmable Offset *
Saturation Indicator *
Current Sink Driver for IR LED
16,000:1 Dynamic Range
Maskable ALS and Proximity Interrupt
Programmable Upper and Lower Thresholds with Persistence Filter
Power Management
Low Power 2.2 A Sleep State with UserSelectable Sleep-After-Interrupt Mode
90 A Wait State with Programmable Wait Time from 2.7 ms to > 8 seconds
I 2C Fast Mode Compatible Interface
Data Rates up to 400 kbit/s
Input Voltage Levels Compatible with VDD or 1.8-V Bus
3.94 mm 2.36 mm 1.35 mm Package *