High Resolution Display Systems Using Current-Steering DAC

Vol.4  No.2

Year: 2014

Issue: Dec-Feb

Title : High Resolution Display Systems Using Current-Steering DAC

Author Name : Rekha Rekha P, N. Vijayanandam N. Vijayanandam

Synopsis :

This paper focusses on foreground calibration technique. For high speed and high resolution video applications, current steering DAC is preferred. In the large current sources, linearity error is introduced and detected by using two current tunning loops and digital controller. In this paper, Vcm based switching method injected between MUX and DAC to compensate the error which reduces the time of operation. For 12-bit DAC prototype realized 90nm CMOS process,90% gate area reduction current source array is achieved. The measurement result demonstrates that the calibrated converter achieves both DNL and INL less than 1LSB.

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