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求推荐一款同时测试四路pt100的差分转换芯片

Other Parts Discussed in Thread: OPA2277, OPA4277, ADS124S08

原来设计选用四片OPA2277,在加上外围电路,成本也不小,求一款可以同时测试四路PT100转换芯片,精度0.5即可,测温范围1-99度