Digital-to-analog converter with controlled buffered inputs

Details Digital-to-analog converter with controlled buffered inputs Digital-to-analog converter with controlled buffered inputs

2008-09-16

2008-09-16

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

11474175

ABSTRACT:
A DAC circuit is provided which implements a buffered DAC input where the buffer is provided by a differential amplifier whose supply rail is correlated with the input to the DAC. In this way it is possible to buffer the circuitry using amplifiers whose open loop gain specifications may be relaxed without affecting the linearity performance of the DAC.

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Karthikeyan, S. et al, “Low-Voltage Analog Circuit Design Based On Biased Inverting Opamp Configuration”; IEEE, vol. 47, Mar. 3, 2000, pp. 176-184.

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