raja.cedt wrote on Oct 17th, 2008, 4:47am:for what purpose u r using this S/H circuit?Becaz S/H circuits selection based on application.I am getting why you shorted mosfets whose gate is connected to clkb.Better use some gate boosted kind of circuit.use the following reference.its linearity is excellent.
A 1.5-V, 10-bit, 14.3-MS/s CMOS pipeline analog-to-digital converter A. Abo and P. Gray, IEEE Journal of Solid-State Circuits, May 1999
Thanks! raja
This Track and Hold circuit is used for the front end of high speed flash ADC, say 5Ghz.
By using 5GHZ as sampling frequecy, when the input frequency is 2.5GHz, the simulation shows that the output signal is distorted very seriously.
I want to improve the bandwidth. Can someone give some suggestion and direction?
To increase the input bandwidth, which parameter can I change?
or can I add some circuit? Is there some good reference available?