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https://designers-guide.org/forum/YaBB.pl Design >> Analog Design >> DAC output DC voltage shift https://designers-guide.org/forum/YaBB.pl?num=1606728907 Message started by CMOSMas on Nov 30th, 2020, 1:35am |
Title: DAC output DC voltage shift Post by CMOSMas on Nov 30th, 2020, 1:35am Hi guys, i'm working on a 10bit charge redistribution switched-capacitor serial DAC. The converter works with V_ref=10mV=V_fs. In this way, the converter starts convertingthe input from 0 to 10mV. The problem is that i need this very small LSB=9.8uV but at the end of the conversion, the output must have 300mV DC voltage (lets say a 10mVpp sinusoidal signal with 300mV DC). The DAC output goes to an high gain voltage buffer stage in order to drive a capacitive load. How can i introduce the DC voltage? Level-shift after the buffer or internally within the dac? Thank you in advance! :) |
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