ADG436BRZ-REEL

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ADG436BRZ-REEL is an ESD protection switch used in applications such as overvoltage and overcurrent protection, fault isolation and system sequencing. It is part of a wider category of analog switches and multiplexers, demultiplexers, which are used to switch signals and control the flow of analog signals between a variety of different circuits and devices.

Overview

The ADG436BRZ-REEL provides two channels of protection, each with its own overvoltage detection voltage and overcurrent lock-out voltage. It has two input/output channels that have an input/output impedance of 4.7kΩ to 4.9kΩ. The device is housed in a compact 4-pin package and requires a single-supply voltage between 1.7V and 14V. It can operate at temperatures of up to 105°C and with a wide switching bandwidth of up to 75MHz. The device also features ESD protection of up to ±8KV Human Body Model (HBM).

Applications

The ADG436BRZ-REEL is a suitable solution for applications such as: overvoltage and overcurrent protection of DC and low-frequency audio signals; fault isolation of bus and subsystems; system sequencing; and general-purpose analog switching. It also offers protection for data interfaces such as Ethernet, USB, LVDS, HDMI, and others. The devices low-impedance switch provides for reliable operation in the presence of high-frequency signals with minimal signal distortion.

Working Principle

The ADG436BRZ-REEL uses the diode switching principle to operate the input/output channels. This works by using two diode elements connected in series. When a logic level is applied to the control pin, the two diodes turn “on” and the switch will connect the two channels together. When the switch is switched “off”, the two diodes turn to their “off” state and the channels are isolated from each other. The diode switching principle also offers ESD protection and allows the device to protect sensitive analog circuitry from electrostatic discharge.

Conclusion

The ADG436BRZ-REEL is a versatile switch for a variety of analog switching applications including overvoltage and overcurrent protection, fault isolation, and system sequencing. It provides reliable operation in the presence of high-frequency signals with minimal signal distortion. The diode switching principle of the device provides ESD protection and ensures that analog circuitry is sufficiently protected from electrostatic discharge.

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