ADG1423BRMZ-REEL7

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ADG1423BRMZ-REEL7 is an interface product used for analog switches, multiplexers, demultiplexers. It is a low voltage, high speed, and low on-resistance switch.

Application Field

With low-power CMOS technology and 2.7V to 3.6V supply voltage, ADG1423BRMZ-REEL7 is suitable for the application areas such as portable equipments, battery powered systems, and notebook computers.

Features

• low on-resistance (R_ON) of 0.47Ω at VDD = 3.0V with 250 µA of supply current
• low power operation with 1.2 µA quiescent supply current in 1 of 8 con-figured
• ability to handle signals up to 6.5V (at VDD = 3.0V) without latch up
• low power dissipation
• low quiescent current
• small size

Working Principle

As shown in the schematic diagram below, ADG1423BRMZ-REEL7 is a CMOS-MOSFET switch array that can select one of eight channels. The device has two logic level inputs labeled as A and B. The state of the select pins determines which channel is on. When both select pins (A and B) are low, channel 0 is on. When select pin A is high and select pin B is low, channel 1 is on. Similarly, when select pin A is low and select pin B is high, channel 2 is on. When both select pins A and B are high, channel 3 is on. Through this way, each of the eight channels can be controlled independently.

The switching rate is determined by the logic pin capacitance, which typically includes the power supply, package, and wiring capacitances. The logic pins each have 3Ω of input capacitance, which, together with the capacitance of the other pins, can be expected to take approximately 70ns to charge and discharge and have the device switch. The ADG1423BRMZ-REEL7 switches all channels completely in less than 6µs.

Conclusion

ADG1423BRMZ-REEL7 is a low voltage, high speed, and low on-resistance switch suitable for the application areas such as portable equipments, battery powered systems, and notebook computers. The device has two logic level inputs labeled as A and B. Through these two select pins, each of the eight channels can be controlled independently and completely, with a switching rate of 6µs.

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