TI ADS8201低功耗单片数据采集方案

TI 公司的ADS8201是低功耗单片数据采集系统,包括12位采用电容的SAR模数转换器(ADC),高性能连续时间可编增益放大器(PGA)以及全自动扫描8:1复接器,模拟电压2.2V到5.5V,高达100kSPS吞吐量速率, SCLK 高达25MHz (VD = 5V),主要用在手提通信,传感器接口,手提医疗仪表,数据采集系统和GPS芯片组.本文介绍ADS8201主要特性, 功能方框图以及精密定位应用电路图和桥式传感器应用电路图.

The ADS8201 is a low-power, complete on-chip data acquisition system optimized for portable applications that require direct connections, wide dynamic range, and automatic operation with very low power consumption. The device includes a 12-bit, capacitor-based, successive approximation register (SAR) analog-to-digital converter (ADC); a high-performance, continuous-time programmable gain amplifier (PGA); and a fully automatic scan, 8-to-1 multiplexer (mux) with breakout to allow for system design flexibility.

Many other features are included to further optimize system operation. Conversion results may be saved in an onboard first-in/first-out (FIFO) buffer and read out at a later time. Each channel has a gain setting that can be loaded automatically when it is selected.

ADS8201主要特性:

• Multi-Chip Ready and Fully Enabled:234

• Low-Power, Flexible Supply Range:

– 2.2V to 5.5V Analog Supply
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