4273-52 RF/IF and RFID

Test Frequency:	2GHz
Supplier Device Package:	SC-70-6
Package / Case:	6-TSSOP, SC-88, SOT-363
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2.7 V ~ 3.3 V
Impedance:	75 Ohm
Features:	Single Line Control
IIP3:	53dBm (min)
P1dB:	32dBm
Series:	UltraCMOS®
Insertion Loss:	0.65dB
Isolation:	25dB
Frequency Range:	5MHz ~ 3GHz
Circuit:	SPDT
Topology:	Reflective
RF Type:	CATV
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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RF Switches

RF switches are devices used to select or manage connection paths for microwave signals. They are used to route signals in telecom, test and measurement applications, radars, wireless communication, and in multi-frequency networks. 4273-52 is one type of RF switch used in today\'s circuit architectures. This article will discuss its application field and working principle.

Application Field

The 4273-52 is a high performance, 6-port reflectometer switch designed for use in numerous applications including antenna testing, cable TV, UMTS base station and other wireless testing applications. The switch is designed for operation in the 0.2-20GHz frequency range, allowing it to be used in diverse applications. Due to its high isolation and small switching time, the 4273-52 is especially suitable for use in agricultural, industrial, or medical environments.

Working Principle

The 4273-52 is an absorptive SP4T switch, meaning that the RF signal is terminated/absorbed inside the switch, allowing for improved performance and repeatability. The switch itself consists of a push-button actuator, which is used to select one of the six ports, two integrated relays to make the connections, and an output port. In order to select an output port, the control line is used to activate either of the two relays, resulting in the corresponding port being connected to the output. The switch also includes a low power, status LED for easier system operation.The 4273-52 switch also features a low loss design, which allows it to handle up to +30 dBm of input power while maintaining excellent isolation between ports. This improved isolation also includes low level crosstalk, allowing the switch to be used in a wide variety of applications.

Conclusion

In conclusion, the 4273-52 high performance RF switch is a versatile and reliable device for use in a variety of applications. The switch offers a low insertion loss and excellent isolation between ports, allowing it to be used in demanding environments. Additionally, the switch has a low power LED status indication and a push-button actuator for easy operation.

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