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MAX191：低功耗、12位采样ADC，内置电压基准及关断模式

对于新设计，请参考MAX129X系列产品

The MAX191 is a monolithic, CMOS, 12-bit analog-to-digital converter (ADC) featuring differential inputs, track/hold (T/H), internal voltage reference, internal or external clock, and parallel or serial µP interface. The MAX191 has a 7.5µs conversion time, a 2µs acquisition time, and a guaranteed 100ksps sample rate. The MAX191 operates from a single +5V supply or from dual ±5V supplies, allowing ground-referenced bipolar input signals. The device features a logic power-down input, which reduces the 3mA VDD supply current to 50µA max, including the internal-reference current. Decoupling capacitors are the only external components needed for the power supply and reference. This ADC operates with either an external reference, or an internal reference that features an adjustment input for trimming system gain errors. The MAX191 provides three interface modes: two 8-bit parallel modes, and a serial interface mode that is compatible with SPI™, QSPI™, and MICROWIRE™ serial-interface standards.

关键特性 12-Bit Resolution, 1/2 LSB Linearity +5V or ±5V Operation Built-In Track/Hold Internal Reference with Adjustment Capability Low Power: 3mA Operating Mode 20µA Power-Down Mode 100ksps Tested Sampling Rate Serial and 8-Bit Parallel µP Interface 24-Pin Narrow DIP and Wide SO Packages

MAX191：功能框图 应用 自动测试设备(ATE) 电池供电数据记录 数据采集 数字信号处理(DSP) 机电系统 高精度过程控制 PC笔输入量化器 电信

数据手册DataSheet

关键参数

开发工具

• MAX191EVKIT

质量和环境数据

• MAX191.pdf

相关产品

• MAX167：CMOS、5V输入、100ksps、12位ADC，带有采样/保持和电压基准
• MAX174：工业标准、12位ADC，内置电压基准
• MAX122：500ksps、12位ADC，带有采样/保持和电压基准
• MAX183：3µs、12位ADC
• MAX172：完备的、10µs、CMOS、12位ADC

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