Data independent loading of a reference in a discrete time syste

Details Data independent loading of a reference in a discrete time syste Data independent loading of a reference in a discrete time syste

1995-09-25

1996-07-30

Hoff, Marc S.

Coded data generation or conversion

Sample and hold

341143, H03M 302

Patent

active

055415997

ABSTRACT:
A 1-bit discrete time digital-to-analog converter which samples a reference voltage and ground potential onto two charging capacitors during a sample phase of each sampling period, and which transfers the charge on one of the capacitors, as determined by a digital input signal, onto an integrator during a transfer phase of said sampling circuit, draws current from the reference voltages which is independent of the data into the converter. The improvement comprises the addition of at least one phase to each sampling period so that the current drawn from said reference voltage is essentially independent of said digital input signal.

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