ELM2712B Datasheet | Elite Semiconductor Microelectronics Technology

Overview Feature - Tiny 2mm x 1mm x 0.5mm module - Integrated 940nm IR VCSEL - Crosstalk and ambient light cancellation - Wide configuration range - 2 channels (photopic ASL + IR) - Offset emitter / detector package design Application - Mobile phone display management - Mobile phone and wearable user proximity detection - Wearable ambient light measurement Description The ELM2712 features proximity detection and digital ambient light sensing (ALS). The extremely tiny 2mm x 1mm module incorporates an IR VCSEL and on chip VCSEL driver. The proximity detection feature provides object detection (e.g. mobile device screen to user’s ear) by photodiode detection of reflected IR energy (sourced by the integrated VCSEL). Detect/release events are interrupt driven, and occur when proximity result crosses upper and/or lower threshold settings. The proximity engine features a wide range offset adjustment to pensate for unwanted IR energy reflection at the sensor. Proximity results are further improved by automatic ambient light subtraction. The ALS and IR photodiodes have dedicated data converters producing 24-bit data. This architecture allows applications to accurately measure ambient light which enables devices to calculate illuminance to control display backlight. Elite Semiconductor Memory Technology Inc. Revision:1.3 Publication Date: Nov. 2022 1/34 ESMT Block Diagram I2C Interface Proximity integration VDD3 IR Filter Photopic Open drain current sink Proximity Proximity Data Proximity control ALS Control CH0 ADC CH0 Data CH1 ADC CH1 Data GND VDD SCL SDA IR Filter Interrupt Open drain Output Description Name Pin No. VDD3 3 Pin...