[原创] Linear LTC2373－18 18位8路SAR ADC解决方案

Linear公司的LTC2373-18是18位取样频率1Msps的8路SAR低噪音高速模数转换器(ADC),SNR为100dB,工作电压单源5V,具有高度可配置低串扰8路输入复接器,支持全差分,假差分单极和假差分双极信号输入,典型功耗40mW,主要用在可编逻辑控制器(PLC),工业过程控制,高速数据采集,手持仪表和自动测试设备(ATE).本文介绍了LTC2373-18主要特性,框图,几种应用电路,以及演示板DC2071A主要特性,电路图,材料清单和PCB元件布局图.

The LTCR2373-18 is a low noise, high speed, 8-channel18-bit successive approximation register (SAR) ADC. Operatingfrom a single 5V supply, the LTC2373-18 has a highlyconfigurable, low crosstalk 8-channel input multiplexer,supporting fully differential, pseudo-differential unipolar and pseudo-differential bipolar analog input ranges. TheLTC2373-18 achieves ±2.75LSB INL (maximum) in allinput ranges, no missing codes at 18-bits and 100dB (fullydifferential)/ 95dB (pseudo-differential) SNR (typical).
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