【摘要】 该电路设计实现了基于24位高精度Δ-Σ型串行A/D转换芯片ADS1258的信号采集系统,以FLASH型FPGAA3P125为采集存储控制器,该电路可以实现45路模拟信号的采集存储功能。设计中充分利用ADS1258片上集成功能,配合信号调理电路、5 V基准源以及相应的抗干扰措施,既简化了电路设计,也保证了信号的采集精度和系统的稳定性。该采集存储单元适用于对精度要求较高的场合。更多还原

【Abstract】 The circuit of the signal acquisition system was designed and implemented based on 24 high-precision Δ-Σ type serial A/D conversion chip ADS1258,and FLASH-based FPGA A3P125 for the acquisition and storage controller,the circuit could achieve 45-channel analog signal acquisition and storage capabilities.Taking full advantage of ADS1258 chip integration,with the signal conditioning circuitry,5 V reference and the corresponding anti-jamming measures,not only the circuit design was simplified,but also the accuracy and signal acquisition system stability was ensured.The acquisition and storage unit was for the high precision applications.更多还原