MAX4359EWG+T

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MAX4359EWG+T is an integrated Analog switch, especially useful in particular applications. It is also a low on-resistance, single-pole double-throw signal switch that operates from a single power supply. This switch circuit is designed specifically to protect signal inputs without “ground loop” problems. The power supply voltage can range from -0.3V to +32V. The single supply operation eliminates the need for external signal level shifting circuitry, making this device an ideal choice for use in problems related to level shifting and low operating power.

Applications

The MAX4359EWG+T provides high input impedance and low crosstalk and nonlinearity, making it suitable for a variety of applications. It can be used for signal routing, level translation, protection, and interfacing between logic and analog circuitry. It is suitable for use in digital audio applications, portable audio amplifiers, microphone pre-amplifiers, digital video transmissions, and video amplifiers. It is also useful for applications where a low-on resistance switch with low operating power is desired.

Working Principle

The MAX4359EG+T features two stable states, each with a corresponding low-on resistance (R ON). When the switch is On, the S1, S2, and S3 ports can be connected together, providing low crosstalk, low nonlinearity and high input impedance. When the switch is Off, the device can be used to help protect the analog signal by isolating the three ports from one another. It also has ESD protection which prevents damage from electrostatic discharge.

The device is controlled by the S pin, which sets the input voltage threshold at which the switch operates. In the active mode, for input voltages up to approximately +1.2V, the switch is off and does not allow a circuit connection between the 3 ports. When input voltages reach between 1.2V and 1.6V, an internal switch is turned on and the switch circuit provides a low-on resistance path between all three ports. This allows a current to flow between the ports.

The MAX4359EWG+T also features an internal diode that is used to discharge the external capacitance to improve response time. The device is ESD protected, and the power supply voltage can range from -0.3V to +32V. This allows the device to be used in many situations and make it ideal for applications that require level shifting and low operating power.

Conclusion

The MAX4359EWG+T is a single-pole double-throw signal switch with low on-resistance, making it useful for a variety of applications such as signal routing, level translations, protection, or interfacing between logic and analog circuitry. The device operates from a single power supply, eliminating the need for external level shifting circuitry and allowing it to be used in situations with low operating power. The device is also ESDprotected and features a diode to discharge external capacitance and reduce response time.

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