Interface circuit for serial D-A converter

Details Interface circuit for serial D-A converter Interface circuit for serial D-A converter

1998-06-18

2000-08-15

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

Parallel to serial

341144, H03M 900

Patent

active

061043273

ABSTRACT:
An interface circuit is used for a serial D-A converter, the serial D-A converter having a digital signal in a form of serial data input thereto and determining a piece of data of the digital signal in the form of serial data defined by a point of change of a control signal as data to be converted into an analog signal. The interface circuit includes: a converting portion converting an input digital signal in a form of parallel data into the digital signal in the form of serial data to be input to the serial D-A converter; a specifying portion specifying the number of bits per piece of the data of the digital signal in the form of serial data, the piece of the data of the digital signal in the form of serial data being data to be converted into the analog data by the serial D-A converter; and a phase control portion changing the phase of the control signal in accordance with the number of bits specified by the specifying portion.

REFERENCES:
patent: 5319369 (1994-06-01), Majos et al.
patent: 5541596 (1996-07-01), Yoshida
patent: 5563594 (1996-10-01), Ford et al.
patent: 5629696 (1997-05-01), Kawasaki et al.

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