RE46C401数据手册Microchip中文资料规格书

描述 Description

The Microchip RE46C401 is a low-power smoke detector Analog Front End (AFE) intended for panel-based applications. The AFE provides all the needed analog, interface and power regulation functions for a microcontroller-(MCU) based multicriteria smoke detector. It can be powered from a constant current source typically used in panel-based applications. The RE46C401 features an integrating photo amplifier to interface with a photoelectric smoke chamber, two independently controlled programmable LED drivers, an analog buffer circuit (ABUF) for monitoring system voltages and a 3.3V regulator. For designs needing built-in CO or toxic gas detection, please see the RE46C400. The RE46C401 is capable of meeting UL 268 7th Edition specifications and can be easily adapted in a routinely changing regulatory environment with its programmable design and rich feature set.

特性 Features

4.9V to 12V Operation
Low Quiescent Current
3.3V Regulator
Dual Independently Controlled LED Drivers with
Programmable Current up to 200 mA
Programmable Gain Integrating Op Amp with Effective Transimpedance > 20 MΩ at 100 μs
Voltage Monitoring Circuit (ABUF)
Watchdog Timer
SPI Controlled
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