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TPS8802
SLVSF25C – SEPTEMBER 2019 – REVISED AUGUST 2021
TPS8802 Smoke Alarm AFE
1 Features
• Photo Chamber AFE
– Dual 8-bit programmable current LED drivers – Temperature compensation of LED current – Ultra-low offset op-amp for photodiodes – Programmable and bypassable gain stage • Carbon Monoxide Sensor AFE
– Ultra-low offset gain stage – Programmable gain and reference • Horn Driver
– Self-resonant driver for three-terminal piezos – PWM support for voice on two-terminal piezos • Power Management
– Programmable LDO for external microcontroller – Boost converter for horn, interconnect • Interconnection bus for multi-alarm communication • Ultra-low power consumption • I2C serial interface • Programmable battery test load
2 Applications
• Smoke and CO alarm
3 Description
The TPS8802 in
TPS8802 Datasheet
