ACPL-782T-300E Integrated Circuits (ICs)

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Linear - Amplifiers - Instrumentation - ACPL-782T-300E

The ACPL-782T-300E is an integrated circuit (IC) used as a linear amplifier for instrumentation applications. It is a three-stage linear amplifier designed to work in the most demanding remote-sensing, data-acquisition, data-logging, and telemetry applications. It features a maximum output current of 300mA and a wide-bandwidth frequency response of 20-500kHz.

Features

• Wide voltage gain range: 20 to 200mV/V
• Wide frequency response: 20 to 500kHz
• Very low input and output noise: 5nV/√Hz
• Stable gain over temperature: ±4%
• High output current: 300mA

Applications

The ACPL-782T-300E has a wide range of applications in instrumentation settings. Its low noise and stable gain over temperature make it suitable for remote-sensing, data-acquisition, data-logging, and telemetry applications. It is also used as a main amplifier for bridge, strain gauge, and piezo electric transducers since it can provide a high output current of up to 300mA. Other areas it can be used include medical imaging, industrial process control, and scientific instrumentation.

Working Principle

The ACPL-782T-300E is based on the principle of a three-stage linear amplifier. It employs three bipolar transistors in a cascode configuration and operates with a differential signal input. The signal is amplified first by the cascode configuration and then by an emitter follower. The signal is then further amplified by an emitter follower which is coupled to the output stage. The output stage consists of an output transistor with an open-collector configuration to provide a high output current up to 300mA. This allows the ACPL-782T-300E to provide a wide range of output voltages from 0 to 20 volts.

Conclusion

The ACPL-782T-300E is a linear amplifier IC suitable for instrumentation and telemetry applications. It features a wide voltage gain range, wide frequency response, low noise, and high output current of up to 300mA. It is based on the principle of a three-stage linear amplifier and utilizes a cascode configuration and an open collector output transistor. Its stability over temperature and wide range of applications make it an ideal choice for remote-sensing, data-acquisition, data-logging, and telemetry applications such as medical imaging, industrial process control, and scientific instrumentation.

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