ISL29027
ISL29027 is Proximity Sensor manufactured by Renesas.
Proximity Sensor with Intelligent Interrupt and Sleep Modes
FN7815 Rev 1.00 February 2, 2012
The ISL29027 is an integrated infrared light-to-digital converter with a built-in IR LED driver and I2C Interface (SMBus patible). The flexible interrupt scheme is designed for minimal microcontroller utilization.
For proximity sensor (Prox) data conversions, the built-in driver turns on an external infrared LED and the proximity sensor ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise (such as sunlight) and has a 540μs conversion time.
The ISL29027 provides proximity sensing with a typical 138μA normal operation current (110μA for sensors and internal circuitry, ~28μA for external LED) with 220m A current pulses for a net 100μs, repeating every 800ms (or under).
The ISL29027 uses both a hardware pin and software bits to indicate an interrupt event has occurred. A proximity interrupt is defined as a measurement over a threshold...
