Multi-channel digital to analog (D/A) conversion

Details Multi-channel digital to analog (D/A) conversion Multi-channel digital to analog (D/A) conversion

2008-01-08

2008-01-08

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S141000

Reexamination Certificate

active

11437289

ABSTRACT:
A multi-channel digital-to-analog (D/A) conversion system that can produce an analog output (210) from a digital signal (201) using N D/A converters (C1-CN), each with 1/N of the resolution of a single D/A converter used to perform the same D/A conversion. A data sample (Din) of the digital signal (201) is decomposed into N data sub-samples (D1-DN). The sum of the values of the data sub-samples (D1-DN) is equal to the value of the data sample (Din), while the normalized range of the value of the data sample Din is greater than the normalized range of the value of each data sub-sample (D1-DN). Each D/A converter (C1-CN) receives a respective one of the data sub-samples (D1-DN), and generates a respective one of a plurality of analog component outputs (A1-AN) singly or jointly with at least one of the other D/A converters (C1-CN). The analog output (210) is produced by additively combining the plurality of analog component outputs (A1-AN).

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