A/D converter, D/A converter and voltage source

Details A/D converter, D/A converter and voltage source A/D converter, D/A converter and voltage source

2006-10-03

2006-10-03

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S118000

Reexamination Certificate

active

07116258

ABSTRACT:
A reference voltage generating circuit generates a reference voltage Vref. An A/D converting circuit compares an analog input voltage Vin with the reference voltage Vref to convert the analog input voltage Vin to a digital output value Dout. A measured value storing circuit stores a measured value of the reference voltage Vref in advance and outputs the stored measured value. A user of an A/D converter corrects the digital output value Dout from the A/D converting circuit by use of the measured value of the reference voltage Vref outputted from the measured value storing circuit, thereby obtaining a digital value representing the analog input voltage Vin accurately irrespective of the accuracy of the reference voltage Vref.

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patent: 2000-031823 (2000-01-01), None
patent: 2000-201076 (2000-07-01), None

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