MIC845中文资料1uA, 12us, Comparator with 2.55V Reference数据手册Microchip规格书

描述 Description

The MIC845 is a precision micro-power voltage comparator with an on-chip 2.55V reference voltage source.Intended for voltage monitoring applications, the MIC845 can be used with an external resistor divider to detect a wide range of voltages, or without external resistors to directly monitor voltages with its high input impedance CMOS input.The MIC845 incorporates a voltage reference and comparator with fixed internal hysteresis. When the 2.55V internal threshold is crossed, the output switches polarity.MIC845 is available with a push-pull or open-drain output stage. The push-pull output stage is configured for both active high or active low output; the open-drain output stage is only configured active high.Supply current is extremely low (typically 1µA), making it ideal for portable applications.MIC845 is supplied in Micrel's Teeny™ 5-lead SC- 70 package.

特性 Features

• Extremely low 1µA supply current (typical)
• 2.55V on chip reference
• ±2% voltage threshold accuracy
• Optimized for PDAs, cellular telephones, pagers, and other battery-powered devices
• Open-drain output can be pulled up to 6V regardless of supply voltage
• 5-lead SC-70 package

简介

MIC845属于集成电路（IC）的比较器。由制造生产的MIC845比较器逻辑比较器系列产品用于根据以数字格式表示的信息比较结果来生成输出；身份型比较器指示两个输入是否相同，幅度型比较器还指示两个输入不相同时哪个较大。它们不同于比较两个模拟输入幅度的器件，后者称为线性比较器且单独分类。