Gain-compensating differential reference circuit

Details Gain-compensating differential reference circuit Gain-compensating differential reference circuit

1995-06-06

1997-09-30

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

H03M 118

Patent

active

056730470

ABSTRACT:
A gain compensating differential reference circuit that is used to match the gain of an input differential amplifier, and track and hold circuit at the input of an analog-to-digital converter. The gain compensating differential reference circuit includes a single-to-differential converter to convert a V.sub.REF signal into a V.sub.REF+ and a V.sub.REF- signals whose difference equals the full-scale range of the differential analog input to the A/D converter, a gain matching differential amplifier to process to the differential output of the single-to-differential converter, and a gain matching track and hold circuit to process the output of the differential amplifier. The output of the gain matching track and hold circuit has the same gain and full-scale range as the analog signals processed by the input circuitry of the A/D converter along the analog path.

REFERENCES:
patent: 4490713 (1984-12-01), Mrozowski et al.

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