Maxim MAX1358B16位数据采集方案

Maxim 公司的MAX1358B是16位数据采集系统,集成了ADC,DAC,UPIO,RTC,电压监视器和温度传感器,单电源+1.8V到+3.6V,具有可编程的转换速率,从10sps到477sps,本身和系统失调和增益校准,可编增益1,2,4或8,单极和双极模式,主要用在电池供电和手提设备,电化学和光学传感器,医疗仪器,工业控制和数据采集系统.本文介绍了MAX1358B主要特性, 功能方框图以及光反射计应用电路图, 电化学测量应用电路, 温度测量, LCD对比度调整, 单端和差分压电蜂鸣器驱动电路等.

16-Bit, Data-Acquisition System with ADC, DACs, UPIOs, RTC, Voltage Monitors, and Temp Sensor

The MAX1358B 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. This device integrates an ADC, DACs, operational amplifiers, internal selectable- voltage 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 MAX1358B 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) allows measuring low-level signals and reduces external circuitry required.
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