Sample and hold

Sample and hold (S/H) is an electronic circuit commonly used in analog-to-digital conversion and signal processing. Its primary function is to capture and hold a voltage level from a continuous signal at a specific moment in time, allowing that value to be processed, sampled, or digitized. ### Key Functions of Sample and Hold: 1. **Sampling**: The circuit takes a sample of the input signal at a specific instant, typically triggered by a clock signal or another control signal.