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关于ADS7862模数转换芯片

Other Parts Discussed in Thread: OPA132, ADS7862

按照datasheet中的典型应用电路,用一块OPA132运放,完成±10V的模拟输入,用一块有源晶振输出4MHz和200khz分别作为CLK和convst,IO口模拟RD和CS,进行数据采集,采集结果只能收到-10v~0v输入所对应的的800~fff,而0~+10v输入,采集到的一直都是fff