ACPL-C797T-000E

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ACPL-C797T-000E Application Field and Working Principle

The ACPL-C797T-000E bridges the gap between analog signals and digital systems and is representative of the data acquisition-ADCs/DACs-special purpose category of products. It is a bridge FET type opto-isolator and provides high reliability in a conventional two-wire 4 pin-out package. The primary application field for this device is in the industrial, medical, military and communication systems. The ACPL-C797T-000E is also suitable for consumer applications such as PC add-on cards and consumer electronic equipment.

The working principle of the ACPL-C797T-000E is relatively simple. An LED on the device is activated, sending a signal to an opto-FET isolator, which, along with an external power FET driver, modulates a sense of current through a resistive element. This results in the bridge FET type opto-isolator providing a controlled, high-efficiency current path between the input and output circuits. The ACPL-C797T-000E has a transimpedance of 500 ohms (50mA sensing current) and an output impedance of 10k ohms.

The ACPL-C797T-000E is a bridge FET type opto-isolator with a high common-mode rejection ratio across a wide operating temperature range. It uses two power FETs, each connected to its respective side of the opto-isolator, to provide a current flow to the input circuit and output circuit. The power FETs also act as buffer transistors for the drive circuit, improving ACPL-C797T-000E’s overall performance in noisy environments. Additionally, the ACPL-C797T-000E includes a forward bias voltage of 2.2V integral to it. This forward bias voltage helps maintain a stable current through the opto-isolator regardless of load conditions, and helps improve protection against Electro-Static Discharge (ESD).

The ACPL-C797T-000E is well suited for systems that require an extremely efficient optically isolated interface between circuits with different common modes. It is capable of handling a wide range of input voltages and provides a reliable high-efficiency current flow between the input and output circuits. The high common-mode rejection ratio, ESD protection, and temperature range are other features that can be expected from the ACPL-C797T-000E. Additionally, it provides a maximum output voltage range of 4.75V, creating a greater potential for interacting with A/D and D/A converters.

In typical applications, the ACPL-C797T-000E is used to convert analog signals into digital signals for communication between circuits, or for isolating circuits with different voltage levels. Additionally, its ability to control a current flow enables it to act as a switch in digital systems, responding to a logic high/low input in order to turn a power device on or off. This allows for some simple logic signals to control more complex processes such as motor control, lighting, and other output functions.

Overall, the ACPL-C797T-000E is an ideal device for systems requiring an optically isolated interface between different circuits. Its ability to provide a reliable high-efficiency current path between circuits makes it a great choice for many applications. Its features, including a high common-mode rejection ratio and ESD protection, make it an optimal choice for industrial, medical, military, and consumer applications.

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