HCPL-9000

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Digital isolators are electrical interfaces used to transmit and separate digital signals. The HCPL-9000 Optocoupler, developed by Broadcom, uses digital isolation technology to safely separate and transfer digital and analog signals even across different common-mode voltage levels between two systems. This digital isolation technology eliminates the need for expensive, bulky, and complex signal isolation components.

The digital isolation technology used in the Broadcom HCPL-9000 is based on PhotoMOS technology. The device contains a miniature integrated circuit, which is optically coupled to an LED light source. The LED light source is then coupled to a photodiode detector on the other side of the isolator. When an electrical current passes through the LED, it emits light which is detected by the photodiode, which then limits the amount of signal that is transferred across the isolation barrier. This limiting or scaling of the signal ensures that it does not exceed the limits set by the isolation barrier.

The HCPL-9000 is typically used in applications to provide signal isolation, galvanic isolation, shielding, and safe power routing. It can be used to provide isolation from ground loops, prevent ground sabotage, and offer overvoltage protection. It can also be used to interconnect systems operating at different common-mode voltages. Common applications include industrial systems, medical systems, industrial automation and control, portable storage systems, and data processing systems.

The digital isolation technology used by the HCPL-9000 enables high-speed data transmission up to 200Mbit/s while also providing high-voltage protection up to 32Vdc. This isolator has a wide temperature range, from -40°C to +85°C and a wide channel-to-channel skew of 10ns or less, making it suitable for use in a wide variety of applications. The device also features compact footprints, low power dissipation, ESD ratings up to 4000V and a comprehensive set of features including signal conditioning, filtering, latch-off protection, and LED diagnostic output.

The Broadcom HCPL-9000 Optocoupler is a highly efficient digital isolation device that offers a low power dissipation, wide temperature range, high-speed data transmission, and wide channel-to-channel skew, making it suitable for a wide variety of applications. Its digital isolation technology eliminates the need for expensive, bulky, and complex signal isolation components.

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