Maxim MAX11359A智能数据采集方案

Maxim 公司的MAX11359A智能数据采集系统(DAS)是基于16位sigma-delta模拟数据转换器(ADC),集成了ADC,DAC,运算放大器,可选择的基准电压,温度传感器,模拟开关, 32kHz振荡器,带告警功能的实时时钟,高频锁相还(FLL),四个可编程I/O,中断发生器,以及1.8V和2.7V电压监视器,主要用在以电池为能源和手提设备,电化学和光学传感器,医疗设备,工业控制和数据采集系统.本文介绍了MAX11359A的主要特性,方框图以及各种应用电路,包括带双LED和单个光电二极管的光反射计应用电路, 带两个遥控传感器的温度补偿电路,可编增益仪表放大器, LCD 对比度调整应用电路和单端和差分压电蜂鸣器驱动电路等.

The MAX11359A smart data-acquisition system (DAS) is based on a 16-bit, sigma-delta analog-to-digital converter (ADC) and system-support functionality for a microprocessor(μP)-based system. The device integrates an ADC, DAC, operational amplifiers, internal selectable reference, temperature sensors, analog switches, a 32kHz oscillator, a real-time clock (RTC) with alarm, a high-frequency-locked loop (FLL) clock,four user-programmable I/Os, an interrupt generator, and 1.8V and 2.7V voltage monitors in a single chip.

The MAX11359A has dual 10:1 differential input multiplexers (muxes) that accept signal levels from 0 to AVDD. An on-chip 1x to 8x programmable-gain amplifier (PGA) measures low-level signals and reduces external circuitry required.
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