汽车电气故障诊断系统是围绕一个Maxim MAX8214ACPE五级电压比较器，它包含一个内置的1.25伏精密基准和车载逻辑，允许两个比较器输出逆转。

【MAX8214ACPEM，AX8214A, MAX8214B】

五路通用电压监测器，支持完备的微处理器电压监测

MAX8213、MAX8214：典型工作电路

说明

The MAX8213 and MAX8214 contain four precision voltage comparators capable of monitoring undervoltage and overvoltage conditions for both positive and negative supplies. Accurate trip-point setting is facilitated by the internal 1.25V reference. Not only is trip-level accuracy guaranteed to ±1% over the commercial temperature range, but the trip levels of all channels are guaranteed to match each other within ±1%. A fifth comparator channel monitors microprocessor voltages and generates delayed reset signals. The MAX8213 has open-drain outputs, while active pull-up outputs are incorporated in the MAX8214.

关键特性

±1% Guaranteed Trip-Level Accuracy over Commercial Temp. Range

4 Precision Comparators Plus Auxiliary Comparator

Built-in Hysteresis

Internal 1.25V Reference with 0.75% Initial Accuracy

±1% Guaranteed Trip-Level Matching Between Channels over Commercial Temp. Range

Wide Supply Range: 2.75V to 11V

Controlled Comparator Response for Glitch Immunity

33µA Max Supply Current Over Temp.

应用

电器设备

汽车及工业设备

工业控制器

微处理器电压监控

移动无线装置

过压/欠压/窗式电压检测

便携式计算机

便携式仪表

精密电池监视

电话