[原创] ADI AD7176－2高速高分辨率模数转换(ADC)解决方案

ADI公司的AD7176-2是适用于低带宽输入信号的高速高精度高分辨率Σ-Δ模数转换器(ADC),每路取样频率50kSPS(设定时间20us),输出数据速率5 SPS到250 kSPS,低速时分辨率增加,主要用在过程控制中的PLC/DCS模块,温度和压力测量,医疗和科学仪表以及色层分析.本文介绍了AD7176-2主要特性,功能框图,典型应用电路,以及评估板EVAL-AD7176-2SDZ主要特性,框图,电路图,材料清单和PCB设计文件图.

The AD7176-2 is a fast settling, highly accurate, high resolution, multiplexed Σ-Δ analog-to-digital converter (ADC) for low band-width input signals. Its inputs can be configured as two fully differential or four pseudo differential inputs via the integrated crosspoint multiplexer. An integrated precision, 2.5 V, low drift (2 ppm/℃), band gap internal reference (with an output reference buffer) adds functionality and reduces the external component count.

The maximum channel scan data rate is 50 kSPS/channel (settling time of 20 μs), resulting in fully settled data with 17 noise free bits. User-selectable output data rates range from 5 SPS to 250 kSPS. The resolution increases at lower speeds.
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