Offset detecting circuit and output circuit and integrated circu

Details Offset detecting circuit and output circuit and integrated circu Offset detecting circuit and output circuit and integrated circu

1993-01-15

1995-03-07

Sikes, William L.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327307, H03K 5159

Patent

active

053961234

ABSTRACT:
An offset detecting circuit 10 includes: a sample hold circuit 12 for holding a reference voltage Vref; and a buffer amplifier 13 having two pairs of input terminals. The reference voltage Vref is applied to at least one input terminal of one pair of the two input terminal pairs, and an output signal of the sample hold circuit 12 and an output signal VDout of the buffer amplifier 13 are applied to the other pair of the two input terminal pairs of the buffer amplifier 13, respectively. Further, an output circuit is composed of this offset detecting circuit 10 and a signal voltage outputting circuit 20 configured in the same way as the offset detecting circuit 10. The signal voltage outputting circuit 20 corrects the offset of a signal Vin inputted thereto on the basis of an offset voltage V between the reference voltage Vref and the output voltage VDout supplied from the offset voltage detecting circuit 10. The offset detecting circuit 10 and the signal voltage outputting circuits 20 can be integrated on the same substrate or on different substrates, separately as occasion demands.

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