CA3420E

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The CA3420E is a quad general-purpose operational amplifier, primarily used in linear circuit applications. This chip is a device which provides an amplification of an input signal, as well as providing a two-channel differential input. Its distinguishing feature is its low power operation, making it ideal for use in portable and low power audio systems.

The CA3420E works in an instrumentation amplifier application, an operational amplifier with high gain and common-mode rejection. It has an input signal range of -20 to +20 volts and a maximum gain of 36 dB. It also has an adjustable output voltage range of -11 to +10V. The CA3420E features a wide range on almost all of its characteristics, which gives it great flexibility in demanding applications.

Working Principle

The CA3420E is based on a differential amplifier design which allows it to provide gain and low noise characteristics. It operates with a dual power-supply configuration, typically with +5V and -5V supplies. The positive terminal of the amplifier is connected to the +5V voltage supply, and the negative terminal is connected to the -5V voltage supply.

The amplifier works by comparing the input voltage to ground and amplifying the resulting difference. The output of the amplifier is then fed back to the input, providing feedback which allows the amplifier to maintain a high gain and rejection of common-mode interference and noise.

The CA3420E is also known as a low power instrumentation amplifier because it can operate on low supply voltages, making it useful in battery-powered applications such as portable and audio systems. It is also used in signal conditioning and test equipment, such as medical and industrial sensors and systems.

The CA3420E provides high linearity and low distortion, as well as excellent common-mode rejection and adjustable gain. It is an ideal choice for applications which require low power operation, low noise and high accuracy.

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