General Description

The RE46C120 is a low power CMOS ionization type smoke detector IC. With a few external components this circuit will provide all the required features for an ionization type smoke detector.

An internal oscillator strobes power to the smoke detection circuitry for 10.5mS every 1.66 seconds to keep standby current to a minimum. A check for a low battery condition is performed every 40 seconds when in standby. The TONE input allows for selection of a temporal pattern or a 2/3 duty cycle continuous tone. The temporal horn pattern supports the NFPA 72 emergency evacuation signal.

Features

• Guard Outputs for Ion Detector Input

• +/-0.75pA Detect Input Current

• Internal Reverse Battery Protection

• Internal Low Battery Detection

• Pin Selectable Horn Pattern

• Low Quiescent Current Consumption (<6.5uA)

• 16L PDIP

• ESD Protection on all Pins

• Compatible with MC145017, MC14467

• Available in RoHS Compliant Pb Free Packaging

RE46C112属于集成电路（IC） > 传感器和检测器接口。微芯科技股份有限公司制造生产的RE46C112传感器和检测器接口该系列产品可执行信号调节、数据转换、激励生成和/或各种将传感器或变送器机构连接到主机设备所需的其他功能。示例包括用于 CCD 图像传感器的控制器、用于 4-20 mA 接口和类似应用的电流变送器、超声变送器前端、惠斯通电桥接口等。