Digital-to-analog converter with error compensation

Details Digital-to-analog converter with error compensation Digital-to-analog converter with error compensation

1980-10-08

1983-04-26

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, 340347M, H03K 1302

Patent

active

043814956

ABSTRACT:
A digital-to-analog conversion system includes a digital-to-analog converter, a source of at least one set of digital input signals and a signal for error compensation and a digital signal for error detection to the converter, a switch to selectively couple either the one set of digital input signals and the signal for error compensation or the signal for error detection to the converter, a clock to generate a switching signal having a predetermined period and duration which is coupled to control the switch, a distribution switch for selectively coupling the output of the digital-to-analog converter to two different terminals, receiving a control input from the clock, a sample and hold circuit to sample and hold the output of the digital-to-analog converter, a detector for detecting a linearity error in the digital-to-analog converter output signal when the digital signal for error detection is coupled as an input thereto, a memory for storing the output of the detector, a circuit to write the output of the detector into the memory, and a circuit to read the data from said memory and couple it as the signal for error compensation at the input to the digital-to-analog converter.

REFERENCES:
patent: 4070665 (1978-01-01), Glennon et al.
patent: 4316178 (1982-02-01), Shibayama et al.
Kennedy, Calibration of Analog Channels, IBM Technical Disclosure Bulletin, vol. 16, No. 9, 2/74, p. 2771.

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