Sample-and-hold circuit

Description: The circuit utilizes a CA3130 BiMOS operational amplifier as the sample-readout amplifier for the storage capacitor C1, while a CA3080A serves as the sample-control amplifier. Applications in linear systems that temporarily store analog data encompass digital voltmeter (DVM) systems, industrial process control, multiplex systems, and analog-to-digital (A-D) converters.

The circuit design integrates the CA3130 BiMOS operational amplifier, which is known for its high input impedance and low offset voltage, making it suitable for precise signal processing in sample-and-hold applications. The amplifier is configured to read the voltage level across the storage capacitor C1, which temporarily holds the sampled analog signal. This configuration allows for the stable retention of voltage levels, which is critical in applications requiring accurate data representation.

The CA3080A operational amplifier functions as the sample-control amplifier, providing the necessary control signals to manage the sampling process. This amplifier is characterized by its ability to operate at a low supply voltage while delivering high performance, making it ideal for use in low-power applications.

The overall circuit is designed to facilitate the temporary storage of analog signals, which is essential in various applications such as digital voltmeters, where accurate voltage readings are required. In industrial process control, the ability to sample and hold signals allows for real-time monitoring and adjustments based on processed data. Multiplex systems benefit from this circuit by enabling the selection of different signal paths while maintaining signal integrity. Additionally, in A-D converters, the sample-and-hold functionality is crucial for converting continuous analog signals into discrete digital values without significant distortion or delay.

This circuit exemplifies a robust solution for applications requiring the temporary storage of analog data, leveraging the strengths of the CA3130 and CA3080A operational amplifiers to achieve high precision and reliability in signal processing.The circuit uses a CA3130 BiMOS op amp as the sample-readout amplifier for the storage (sample-holding) capacitor Cl, and a CA3080A as the sample-control amplifier. Applications in linear systems to temporarily store analog data include DVM systems, industrial process-control, multiplex systems, and A-D converters.