Current-Time Digital-to-Analog Converter

A high resolution digital-to-analog converter comprises a programmable n-bit current digital-to-analog converter (IDAC), an m-bit programmable counter/timer, an integrator that converts the IDAC constant current charging a capacitor over time into an a precision (high resolution) analog voltage, and...

Full description

Saved in:
Bibliographic Details
Main Authors SESSIONS D.C, BARTLING JAMES E, OTTEN DAVID L
Format Patent
LanguageEnglish
Published 07.01.2010
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:A high resolution digital-to-analog converter comprises a programmable n-bit current digital-to-analog converter (IDAC), an m-bit programmable counter/timer, an integrator that converts the IDAC constant current charging a capacitor over time into an a precision (high resolution) analog voltage, and a sample and hold circuit for storing the precision analog voltage. The constant current from the IDAC is applied to the integrator for a time period determined by the programmable counter/timer, then the sample and hold circuit will sample the final voltage on the capacitor and store it as an analog voltage. The analog voltage resolution of this high resolution digital-to-analog converter is n+m bits or binary 2n+m. In addition, a plurality of sample and hold circuits may be utilized for maintaining a plurality of analog output voltages.
Bibliography:Application Number: US20080165950