Push pull double digital-to-analog converter

Details Push pull double digital-to-analog converter Push pull double digital-to-analog converter

1989-09-15

1990-11-20

Shoop, Jr., William M.

Coded data generation or conversion

Converter compensation

341127, 341144, H03M 108

Patent

active

049721887

ABSTRACT:
A push pull digital-to-analog converter circuit configuration improves the signal-to-noise ratio when used in the common bipolar (both positive and negative) mode of operation, thereby improving its absolute accuracy. Digital data is supplied to a data buffer which includes an inverter. The inverter supplies the data to one of a pair of push pull connected DACS, referred to as dual DACS. The buffer supplies the data to the other DAC without inversion. The outputs of the pair of DACS are combined by an op-amp circuit which takes the two analog outputs from those circuits and combines them while the push pull circuits are opposed so noise is reduced and accuracy of the conversion is enhanced.

REFERENCES:
patent: 4766328 (1988-08-01), Yang

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