TPS8802中文资料民用烟雾报警器模拟前端数据手册TI规格书

描述 Description

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.

特性 Features

• Photo Chamber AFE
• Temperature compensation of LED current
• Programmable and bypassable gain stage
• Carbon Monoxide Sensor AFE
• Programmable gain and reference
• Horn Driver
• PWM support for voice on two-terminal piezos
• Power Management
• Boost converter for horn, interconnect
• Interconnection bus for multi-alarm communication
• I2C serial interface
• Programmable battery test load