| 摘要 |
The present invention relates to a circuit configuration having a feedback operational amplifier (AMP), which is implemented as fully differential, for amplifying an input signal differentially input to the circuit configuration and for outputting the amplified input signal as a differential output signal. In order to increase the freedom in setting the input common mode voltage, according to the present invention, a combination made of a coupling resistor (R 1 b) and a level shifter (I 1 b, Nsfb) connecting the positive amplifier output (y 1 ) to the inverting amplifier input (x 2 ) and a combination made of a coupling resistor (R 1 a) and a level shifter (I 1 a, Nsfa) connecting the negative amplifier output (y 2 ) to the noninverting amplifier input (x 1 ) are provided.
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