Need circuit similar to the Flip Flop but for analog inputs

[Monady]

FlipFlop

i need a circuit similar to the Flip Flop but for analog inputs.i want to store an analog signal for specific time without loses.Any circuit exists for this application?

 

[FvM]

FlipFlop

Check if a S&H circuit fits.
http://en.wikipedia.org/wiki/Sample_and_hold
**broken link removed**
Following your analogy, a S&H circuit is rather an analog latch (level controlled) than a FF (edge controlled).