RAA239101 Description
Datasheet RAA239101 Photoelectric Smoke Detector AFE IC The RAA239101 is a low-power Analog Front-End (AFE) IC; bined with a microcontroller, photoelectric emitter/detector(s), horn, and minimal external ponents, it forms a plete smoke detector. The IC operates from a 3.3V or 9V battery and has an LDO to provide power to a microcontroller.
RAA239101 Key Features
- Ultra-low current consumption
- 9V or 3.3V battery operation
- LDO for microcontroller supply
- 10-bit ADC for measuring voltage on 7 analog pins
- Drives two LED emitters with 8-bit current DAC
- Two photodiode receivers with programmable gain
- General purpose IO
- Horn driver with clamp diodes
- SPI interface