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- Finite Aperture Time: The sample and hold takes a period of time to capture a sample
of the sensor signal. This is called the aperture time. Since the signal will vary during
this time, the sampled signal can be slightly off.
- Signal Feedthrough: When the sample and hold is not connected to the signal, the
value being held should remain constant. Unfortunately, some signal does bleed
through the switch to the capacitor, causing the voltage being held to change slightly.
- Signal Droop: The voltage being held on the capacitor starts to slowly decrease over
time if the signal is not sampled often enough.
Thu Oct 17 11:25:23 PDT 1996