你是PLC的应用吗？很好的方案，标准的SPI接口，程序网上可以找到。
PGA280 + ADS1259 has been designed to work together to create one easy solution for high resolution/high voltage industrial applications.
2 Channel, fast, MUX PGA front end for multi channel control with Single Cycle settling ADC for enhanced throughput in MUX
Fully differential +/-15V PGA signal swing for seamless ADS input
ADS1259 clock output to synchronize the PGA280 input chopping to preserve the low noise performance.
Low 1/f noise of PGA for 24 bit high resolution and sensitivity of ADC
High PGA CMRR + ADC Digital filter for 16, 50, 60, or 400Hz rejection
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