Analog Front End for commercial smoke detector


Product details


Operating temperature range (C) -40 to 85 Vs (Min) (V) 2.6 Vs (Max) (V) 15.6 Interface type I2C Rating Catalog open-in-new Find other Signal conditioners

Package | Pins | Size

HTSSOP (DCP) 38 43 mm² 9.7 x 4.4 open-in-new Find other Signal conditioners


  • 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
  • Power Management
    • Programmable LDO for external microcontroller
  • SLC interface transmitter and receiver
  • Ultra-low power consumption
  • I2C serial interface
  • Wide input voltage range

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The TPS8804 integrates all of the amplifiers and drivers required for a dual-wave photoelectric smoke detection and carbon monoxide detection system. Its high flexibility is ideal for smoke detection systems where precision and power consumption are critical.

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Technical documentation

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Type Title Date
* Datasheet TPS8804 Smoke Detector AFE datasheet (Rev. B) Mar. 16, 2021
User guide Using the TPS8804EVM (Rev. A) May 20, 2020
Technical article Get Connected: A new blog series Jan. 10, 2014

Design & development

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Hardware development

document-generic User guide
The TPS8804EVM is used to evaluate the TPS8804 smoke and CO detection analog front end and power management IC. The EVM allows for easy connection from the TPS8804 to a user-supplied photoelectric chamber and carbon monoxide sensor. The TPS8804 GUI interfaces with the EVM to quickly evaluate the (...)
  • Two programmable, temperature compensated LED drivers for dual-wave photoelectric chambers
  • Ultra-low offset photodiode transimpedance amplifier with programmable gain stage
  • Ultra-low power op-amp for electrochemical carbon monoxide sensors
  • Interconnect/SLC interface for multi-detector communication
  • Wide (...)

Software development

SLVC793A.ZIP (23438 KB)

CAD/CAE symbols

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HTSSOP (DCP) 38 View options

Ordering & quality

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