seetoo
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Testing my 10bit pipelined ADC,(SMIC 0.18 process)
when diff input both connect dc commen input voltage(0.9V), the output code is not 511. and the output code in 3 Evaluation Board is different respectively(1# is 485,2# is 540, 3# is 604).
It may because offset of opamp ,but should not so large(about 50mV).
So ,what else may cause the code excursion?
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