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THS4503驱动ADS1675

Other Parts Discussed in Thread: ADS1675, THS4503, OPA140

各位大神,在ADS1675参考设计中,THS4503做为驱动,见图

THS4503的输入共模电压为2.5V,想问一下:

(1)在ADS1675如参考设计中供电电源不变、参考电压+3V,THS4503的输压差分信号是否已经超过了±3V,对ADC造成损伤。

(2)现在我这边的前端模拟电路最后以OPA140做的跟随,单端输出,OPA140供电电源为±5V,可不可以以下图形式直接接到THS4503输入端,重新计算我需要电阻值。

(3)如果OPA140单端输出的信号可以直接接到THS4503,那THS4503供电的供电电源最好是多少。