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What's the difference of Track-and-hold and Sample-and-hold?

 
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qslazio



Joined: 23 May 2004
Posts: 194
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Post14 Dec 2004 12:30   What's the difference of Track-and-hold and Sample-and-hold?
i'm confused with these two terms. Anyone can help me figure it out?
thanks
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shutter_man



Joined: 05 Dec 2004
Posts: 13
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Post14 Dec 2004 13:16   Re: What's the difference of Track-and-hold and Sample-and-h
Hi
Track and Hold - is very different from Sample and Hold:
Track& Hold - the output reflects the input- until indicates to HOLD information - than the output is not changed until the HOLD is released.

Sample&Hold - The output is allways the outcome of a Sample operation - no tracking function

Hope its what you'd expected

Shutter_man
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icsrc



Joined: 14 Dec 2004
Posts: 10
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Post14 Dec 2004 13:22   Re: What's the difference of Track-and-hold and Sample-and-h
shutter_man wrote:
Hi
Track and Hold - is very different from Sample and Hold:
Track& Hold - the output reflects the input- until indicates to HOLD information - than the output is not changed until the HOLD is released.

Sample&Hold - The output is allways the outcome of a Sample operation - no tracking function

Hope its what you'd expected

Shutter_man

I've heard that the phase response of these two circuitry is quite different.
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ynhe



Joined: 28 May 2001
Posts: 299
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Post17 Dec 2004 9:16   Re: What's the difference of Track-and-hold and Sample-and-h
Sample&Hold

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ynhe



Joined: 28 May 2001
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Post17 Dec 2004 9:27   Re: What's the difference of Track-and-hold and Sample-and-h
Track&Hold

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markty



Joined: 15 Dec 2004
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Post18 Dec 2004 2:43   What's the difference of Track-and-hold and Sample-and-hold?
So, for S/H, the output will be zero in each sample phase while track/hold will not. right?
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Hughes



Joined: 10 Jun 2003
Posts: 712
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Post18 Dec 2004 6:36   Re: What's the difference of Track-and-hold and Sample-and-h
markty wrote:
So, for S/H, the output will be zero in each sample phase while track/hold will not. right?


Sample & Hold will get a staircase waveform.
For an ideal Track&Hold system, when tracking cycle approaches zero, we get S/H.
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