CA3130 Operational Amplifier IC

Operational Amplifier: The CA3130 is a general-purpose, high-input-impedance op-amp that can be used in a wide range of analog circuit applications. It's part of the 3130 series of op-amps.

High Input Impedance: One of the standout features of the CA3130 is its extremely high input impedance, typically in the gigaohm (GΩ) range. This makes it suitable for applications where a high impedance input is required, such as buffer amplifiers.

Low Input Current: The IC has very low input bias current, typically in the picoampere (pA) range. This makes it well-suited for applications where input current must be minimized to prevent loading of signal sources.

Wide Supply Voltage Range: The CA3130 can operate over a wide supply voltage range, typically from ±5 volts to ±15 volts. This flexibility in supply voltage allows it to be used in both single and dual power supply configurations.

Low Offset Voltage: It has low input offset voltage, which helps reduce errors in precision applications.

Unity Gain Stable: The CA3130 is unity-gain stable, meaning it can be used with a gain of 1 (buffer amplifier) without the need for external compensation components.

Output Swing: The output of the CA3130 can swing very close to the supply voltage rails, making it suitable for applications where the output needs to reach the power supply limits.

Common-Mode Input Voltage Range: It has a wide common-mode input voltage range, which means it can handle signals that are not centered around ground.

Applications: The CA3130 can be used in a variety of applications, including as a buffer amplifier, voltage follower, active filter, integrator, differentiator, and more. It's also used in instrumentation amplifiers and as an input stage for high-impedance sensors.