ADG444BNZ

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Interface - Analog Switches, Multiplexers, Demultiplexers are commonly used in many electronic circuits such as video circuitry and communication systems. ADG444BNZ is one of that kind of components.

ADG444BNZ is a switching device with four channels. It contains four high-performance analog switches that are digitally selectable. The input resistance of each channel is typically 10kΩ which is variable by the gate input or a controlled ouput resistor. The maximum gate control voltage is 5V. The maximum differential on-resistance is 60Ω and typical on-resistance is 20Ω. Additionally, the maximum on-resistance flatness is 0.1Ω, so it is ideal for applications needing low on-resistance flatness.

The power supply range of ADG444BNZ is from 4.5V to 5.5V and the maximum operating temperature is 125°C. The input and output common-mode ranges extend from -2V below VCC to within 1.5V of VCC, making the device suitable for operation from dual supplies. Moreover, it doesn\'t require additional circuitry to be powered, making it an excellent choice for cost-sensitive systems.

In terms of application field, ADG444BNZ can be used in channel selection of various video multiplexing and line switching applications. It is also employed in video-gain control line and video-attenuation control line. Besides, it is also useful in audio-card applications as a differential switch.

The working principle of ADG444BNZ is very simple. The logic input operates the functions of the device. The logic inputs, which connect to an external controller, determine whether the analog switch is closed or open. When the logic input is low, the switch is open and the signal is shunted to the output, when it is high, the switch is closed and the signal is passed to the output.

To sum it up, ADG444BNZ is a high-performance analog switch with four channels and high input resistance. It is used in video multiplexing and line switching applications, audio-card applications and so on. Its working principle is quite simple and it is a cost-effective choice.

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