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求推荐跨阻放大器

Other Parts Discussed in Thread: LMP7721, OPA340, ADS1256

1.PD参数:暗电流0.15na ,结电容1000pF

2.测试光电流最小:0.1nA

3.先经过跨阻放大器后再做第二级放大,然后供ADC采集