HCPL-788J

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The HCPL-788J from Avago Technologies is an optically coupled isolation amplifier that can be used in a variety of applications. It is capable of providing up to 4.5MB/s data transmission rate, making it ideal for signal conditioning, instrumentation, and correction circuits. This device is also suitable for use in industrial automation, medical, and military applications.

The HCPL-788J is a monolithic, high-speed, wide-input voltage, optically-coupled, full-wave rectified, differential amplifier. It contains an array of optical isolators, which provide a high-speed, high-sensitivity data transfer interface, and an integrated high-gain amplifier with a low noise differential output. The device also provides good common-mode rejection and ESD robustness.

The HCPL-788J has a wide input voltage range of 2V to 28V and can be used with various data acquisition systems, signals, and other industrial digital sensor/equipment interfaces. The maximum output current of the device is 3.2A. It also features a single stage input unity-gain buffer amplifier, which helps to minimize noise and provide a high gain bandwidth required for industrial automation and medical applications. The device is capable of providing a frequency response of up to 2MHz and has a low distortion performance.

The device also features an integrated high-speed differential amplifier, which can provide up to 250MHz bandwidth and low distortion performance. The output impedance of the device is 50Ω and the maximum supply voltage is up to 36V. The HCPL-788J is an excellent choice for use in industrial automation, medical, and military applications due to its high gain, wide input voltage range, and low noise performance.

One of the primary uses of the HCPL-788J is as a linear amplifier in instrumentation, OP Amps, Buffer Amps, and other digital sensor applications. It is suitable for use in a wide range of applications, such as sensing temperature, current, and other analog signals. In addition, it can be used in applications such as signal conditioning and conditioning for digital inputs. This device can also be used in systems for measurement, monitoring, and control applications.

In terms of working principle, the HCPL-788J consists of a photo-transistor, which is isolated from the output amplifier by an optoisolator. The photo-transistor is used to generate a voltage, which is proportional to the input signal. The output of this device is then amplified by the integrated amplifier, which provides a high gain bandwidth. The optoisolator ensures that there is no direct electrical connection between the input and output, thus preventing any interference between them. In essence, the optoisolator provides isolation between the two stages and ensures that the output is the same as the input.

In conclusion, the HCPL-788J from Avago Technologies is a high-speed, wide-input voltage optically-coupled, full-wave rectified, differential amplifier which is suitable for a variety of applications. It is capable of providing up to 4.5MB/s data transmission rate and is suitable for sensing temperature, current, and other analog signals. The device is also excellent for use in industrial automation, medical, and military applications due to its high gain, wide input voltage range, and low noise performance. The device features an integrated high-speed differential amplifier, which can provide up to 250MHz bandwidth and low distortion performance, along with a single stage input unity-gain buffer amplifier. Additionally, the device works on a principle where a photo-transistor is isolated from the output amplifier by an optoisolator, thus preventing interference and guaranteeing isolation between the two stages.

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