Pc. Dejong et Gcm. Meijer, ABSOLUTE VOLTAGE AMPLIFICATION USING DYNAMIC FEEDBACK-CONTROL, IEEE transactions on instrumentation and measurement, 46(4), 1997, pp. 758-763
A new principle of voltage amplification that is insensitive to drift
and aging effects of the feedback resistors is presented, The effect o
f mismatch of these resistors is reduced to a second-order effect whic
h results in a total gain error of less than 5 x 10(-6) without the ne
ed for any calibration. Moreover, the long-term stability of the whole
amplifier is guaranteed by the design when used as a chopper amplifie
r.