MAX4890ETJ+T

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The MAX4890ETJ+T is an ultra-low on-resistance analog switch IC that operates in an interface - analog switches – special purpose field. It is built using a process developed by Maxim Integrated which includes a combination of CMOS, bipolar, and silicon-gate processes. The MAX4890ETJ+T is available in a 14-pin TSSOP package and is designed for use in high-speed audio, video and other low power applications.

The MAX4890ETJ+T is specially designed to have low on-resistance and low power operation. It features a 0.6Ω typical on-resistance (TYP) and 0.7Ω on-resistance at 1.8V power supply. It also provides over eight million switching cycles with a maximum of 10µA of control current. This makes the MAX4890ETJ+T ideal for a variety of high-performance applications.

The MAX4890ETJ+T is a dual single-pole single-throw (SPST) analog switch with two independently-controlled channels. Each channel can be controlled by either the logic high (VCC) or logic low (GND) of the Control Inputs A and B, respectively. Many other features on this switch, including high input impedance (10MΩ typical at VCC=3V) and fast switching, help to make it a versatile and reliable switch.

In terms of operational principles, the MAX4890ETJ+T works on the principle of normal channel-open diode switch and the channel-closed diode switch. In the channel-open diode switch, the Control Input is held at logic high, which causes the switch to be open. In the channel-closed diode switch, the Control Input is held at logic low, which causes the switch to be closed.

The MAX4890ETJ+T switch is made of N and P MOSFETs connected in a diode configuration. The N-channel MOSFET is used as the switch and the P-channel MOSFET is used to allow the drain voltage and the source voltage to be connected. This is how the MAX4890ETJ+T is able to provide over-voltage protection.

The MAX4890ETJ+T is a great solution for applications where low on-resistance and low power is needed. It can be used in a variety of audio, video, automotive and communication applications. Its high input impedance and fast switching also makes it an ideal solution for these applications.

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