Digital interpolation circuit for a digital-to-analog converter

Details Digital interpolation circuit for a digital-to-analog converter Digital interpolation circuit for a digital-to-analog converter

1994-11-02

1996-11-26

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

H03M 166

Patent

active

055790046

ABSTRACT:
A digital interpolation circuit is described which has a first interpolation stage, a second interpolation stage, a third interpolation stage and a noise shaping stage. The first stage oversamples a multi-bit digital input signal to twice the sample rate of the multi-bit signal. The second stage oversamples the signal to 4 times the sample rate of the multi-bit input signal. The third stage oversamples the signal to 64 times the sample rate of the multi-bit digital input signal. The noise shaping stage converts the multi-bit digital signal output from the third interpolation stage to a 1-bit signal at the same sampling rate.

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