ADC T/H Linearity and No. of Bits

[neoflash]

Some literature will state their T/H circuits are designed for 8-bit linearity. Which simulation they run and which spec they judge whether it is 8-bit linearity?

In my opinion, since T/H circuit input and output are all analog circuits. No INL/DNL spec can be put there. Are they measuring SDR and compare it with SNR requirement of certain No. of bits?

 

[fredflinstone]

hi neoflash,
Yes you are right. They find the ENOB from Signal to Noise and Distortion ratio SINAD of the T/H circuit to determine its linearity.

 

[neoflash]

thanks for the reply. do u have any literature on this?