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TPS8802

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Analog Front End for residential smoke alarm

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Product details

Parameters

Operating temperature range (C) -40 to 85 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

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

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Description

The TPS8802 is a smoke alarm ASIC specialized for residential smoke alarms. The TPS8802 integrates all of the regulators, amplifiers, and drivers required for a dual-wave photoelectric smoke alarm and carbon monoxide (CO) detection system. Its high flexibility is ideal for smoke alarm systems where precision and power consumption are critical.

The wide input voltage range combined with low standby power consumption and power-saving features support 10-year battery life operation from a single lithium primary battery. The TPS8802 also supports battery backup smoke alarms, seamlessly remaining powered when the mains supply drops or if the battery is disconnected.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS8802 Smoke Alarm AFE datasheet (Rev. A) Mar. 19, 2020
User guide Using the TPS8802EVM (Rev. A) May 20, 2020
Technical articles SigCon Architect: The keys to your high-speed design Oct. 27, 2015
Technical articles Make signal conditioning easy with WEBENCH® Interface Designer Jan. 27, 2015
Technical articles Get Connected: Equalization Oct. 15, 2014
Technical articles One part for all: Multi-standard signal conditioners Mar. 07, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
149
Description
The TPS8802EVM is used to evaluate the TPS8802 smoke and CO detection analog front end and power management IC. The EVM allows for easy connection from the TPS8802 to a user-supplied photoelectric chamber and carbon monoxide sensor. The TPS8802 GUI interfaces with the EVM to quickly evaluate the (...)
Features
  • 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

GUI FOR EVALUATION MODULE (EVM) Download
SLVC793A.ZIP (23438 KB)

Design tools & simulation

CALCULATION TOOL Download
SLVRBG9.ZIP (2247 KB)
GERBER FILE Download
SLVC807A.ZIP (567 KB)

CAD/CAE symbols

Package Pins Download
HTSSOP (DCP) 38 View options

Ordering & quality

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