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in high speed sar design, redundancy technique is usually used in CDAC architecture, but it always has "one-sided tolerance of dynamic conversion errors" (paper2) , however , in paper1 , the author not mentioned this issue, do every who understand this paper can give a command?
paper1: A...
Re: comparator gain question for high speed sar
hi,dick_freebird,
your reply help me a lot, thanks!
(IOS : i means input offset cancellation ...)
i think a conclusion:
latch comparator gain is infinite , the key is speed, that is why we always need some pre-amplifier
stages to boost LSB...
comparator gain question for high speed sar
hi,
in traditional low speed high resolution sar adc, the comparator adopt OOS or IOS pre-amplifier stages to boost comparator gain
and then it can meet high resolution requirement, but i find papers which is about high speed(10b or more) sar...
hi,
i use tsmc 0.13um PDK and make an inverter ckt & symbol,
the MOS W/L is defined by parameter method (ex: L = pPar("lp"),...)
it displays like " 1e-6/130e-9" instead of 1u/0.13u ,
do somebody know how to correct make an symbol , which show W/L value in "u", not in "e-6"
(PS: in tsmc...
dear sir:
recently i design a switched-capacitor circuit in tsmc 0.18um, in the circuit a CMOS transmission gate connect to PAD and an OPAMP input (high impedence), the switch size is << ESD protection mos in PAD, do the small swith need
obey ESD rule? for example, enlarge contact to poly...
hi,matko:
recently i prepare to design a 10b current-steering DAC and i am looking for estimate Avt,Abeta too, could you tell me the paper you mentioned above
(formula of Avt), tks!!
how to extract Avt,A(beta) in pelgrom mismatch model
i want to calculate current mirror mismach using pelgrom model,
do someone know that use mismatch model (provide by foundry) to extract Avt, Aβ parameter
PS:i have tsmc 0.16um spice model (not PDK)
all your question can be find in the follow book
Data Converters, FRANCO MALOBERTI , Springer
Springer - International Publisher Science, Technology, Medicine
recently i want to measure a 12b/30MSPS adc performance,
cold sombody give me a suggention that what instrument suitable for the adc?
i have an Agilent 33250A AWG (arbitrary wave generator) in hand, but the
i con only probide -60dBc harmonic distortin ,it seems not enough for 12 abc.
hi,erikl:
thanks for you reply,in fact,i do write 300meg, and the AC simulation is sucessful and the .ac file generated , but in the .lis file, it shows the sampled output noise power =0,
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