MIC842中文资料Windowed Comparator with 1.25V Reference数据手册Microchip规格书

描述 Description

The MIC841 and MIC842 are micropower, precision voltage comparators with an on-chip voltage reference.Both devices are intended for voltage monitoring applications. External resistors are used to set the voltage monitor threshold. When the threshold is crossed, the outputs switch polarity.The MIC842 incorporates a voltage reference and comparator with fixed internal hysteresis; two external resistors are used to set the switching threshold voltage. The MIC841 provides a similar function with user adjustable hysteresis; this part requires three external resistors to set the upper and lower thresholds (the difference between the threshold voltages being the hysteresis voltage).Both the MIC841 and MIC842 are available with push-pull or open-drain output stage. The push-pull output stage is configured either active high or active low; the open-drain output stage is only configured active low.Supply current is extremely low (1.5µA, typical), making it ideal for portable applications.The MIC841/2 is supplied in Micrel’s Teeny™ 5-pin SC-70, 6-pin 1.6mm × 1.6mm Thin DFN (MIC841), and 4-pin 1.2mm × 1.6mm Thin DFN (MIC842) packages.

特性 Features

1.5V to 5.5V operating range
1.5µA typical supply current
±1.25% voltage threshold accuracy
10nA maximum input leakage current over temperature
10µs propagation delay
Externally adjustable hysteresis (MIC841)
Internal 20mV hysteresis (MIC842)
Output options
Push-pull, active high
Push-pull, active low
Open drain, active low
Open drain output can be pulled to 6V regardless of VDD
Immune to brief input transients
Teeny™ 5-pin SC-70 package
6-pin 1.6mm x 1.6mm TDFN (MIC841)
4-pin 1.2mm x 1.6mm TDFN (MIC842)

简介

MIC842属于集成电路（IC）的比较器。由制造生产的MIC842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。