Novel analog to digital conversion circuit of dual -frenquency induced polarization instrument that high accuracy is mining

The utility model discloses a novel analog to digital conversion circuit of dual -frenquency induced polarization instrument that high accuracy is mining, including program control gain amplifier circuit, single -ended slip parallel circuit and AD analog to digital conversion circuit, program control gain amplifier circuit's the signal output part and the signal input part of single -ended slip parallel circuit are connected, and the signal output part of single -ended slip parallel circuit and AD analog to digital conversion circuit's signal input part are connected, this circuit can amplifynet high, low frequency signals effective signal in the AD input gap and realize the simultaneous acquisition of one way AD converter to high, low frequency signals in with the one -period, can effectual suppression common mode signal interference, and the signal of high accuracy is gathered to messenger's equipment. 本实用新型公开了种新型高精度矿用双频激电仪的模数转换电路，包括程控增益放大电路、单端转差分电路和AD模数转换电路，程控增益放大电路的信号输出端与单端转差分电路的信号输入端连接，单端转差分电路的信号输出端与AD模数