虽然输入偏置电流是这种误差的常见来源,但是外电路产生的电流在源电阻上形成的电压降也能引起误差。
Although input bias current is a common source of this type of error, currents generated by external circuits can also result in errors due to voltage drops across the source resistance.
如图2 - 2所示,输入偏置电流(IBIAS)在源电阻(RS)上产生了误差电压。
As shown in Figure 2-2, the input bias current (IBIAS) develops an error voltage across the source resistance (RS).
如果不进行“调零”修正,所产生的偏置量就会叠加到输入信号上产生误差。
Unless it's corrected by "zeroing," the resulting offset produces an error by adding to the input signal.
应用推荐