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Design >> Analog Design >> How to ensure sigma-delta DAC output to be monotonic?
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Message started by neoflash on Mar 25^th, 2015, 5:54pm

Title: How to ensure sigma-delta DAC output to be monotonic?
Post by neoflash on Mar 25^th, 2015, 5:54pm

I have an over-sampled DAC design with 20-bits input to modulator input and 8-bits output to DAC. Then LPF to remove quantization noise.

The DAC is segmented and is subject to mismatch.

My question is that how to specify the linearity of this 8-bit segmented DAC to ensure that the final output of this system is monotonic?

Thanks,
Neo