DG444BDN-T1-E4

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The DG444BDN-T1-E4 is a quad bilateral analog switch and multiplexer with low on resistance and fast switching characteristics. It is a very versatile and reliable device for a variety of uses, including industrial and consumer applications.

The DG444BDN-T1-E4 offers low on resistance (0.2Ω max) and low power consumption of 0.48mA max, making it ideal for switching small signals. It also features very fast transition time (6ns max) and low crosstalk (5dB min). The device employs anti-backlash Schmitt triggers for simultaneous closure of multiple switches. It comes in a small 16-pin surface mount package, making it suitable for applications where space is limited.

The DG444BDN-T1-E4 can be used as a quad bilateral analog switch or multiplexer or as an operator interface. As a multiplexer, it allows the user to select any one of several inputs and route it to the single output. As an operator interface device, it provides a convenient way of selecting and switching analog signals, with no external components or circuitry required.

The main principle of operation is the same for both the analog switch and multiplexer applications. A control voltage (Vct) is applied to the control input correspondig to the switch or multiplexer channel to be activated, resulting in the closure of that channel. The remaining switches or multiplexers remain open under this condition. The channel\'s switch resistance is determined by the applied control voltage (Vct). When Vct is zero, the switch resistance is at its maximum value; as Vct increases, the resistance decreases.

The DG444BDN-T1-E4 is an ideal solution for applications that require low on resistance, low power consumption, fast switching, and low crosstalk. By using the anti-backlash Schmitt triggers, the switch offers simultaneous closure of the multiple channels. The small package size allows for integration into ultra-small designs, making it suitable for portable applications, including cell phone and PDA interfaces. It is also used in industrial control systems, automotive instruments, and robotics.

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