AS222-92LF RF/IF and RFID

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
RF Type:	Bluetooth, WLAN
Topology:	Reflective
Circuit:	SPDT
Frequency Range:	100MHz ~ 3GHz
Isolation:	18dB
Insertion Loss:	0.5dB
Test Frequency:	3GHz
P1dB:	27dBm
IIP3:	44dBm
Features:	--
Impedance:	50 Ohm
Voltage - Supply:	3V
Operating Temperature:	-40°C ~ 85°C
Package / Case:	6-TSSOP, SC-88, SOT-363
Supplier Device Package:	SC-70-6

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RF Switches

RF switches are widely used in various wireless applications due to their low power consumption, fast switching speed, wide bandwidth, and high isolation stability. This article will discuss the application field and working principle of the AS222-92LF RF switch.The AS222-92LF RF switch is an ultra-wideband, single pole, triple throw (SP3T) switch that is made with high performance ceramic capacitors, into which gold plated metal contact pins are inserted. It offers high isolation over a wide frequency range from 800MHz to 4000MHz and can handle 100W average power at 20°C with low insertion loss.The AS222-92LF is ideal for applications such as digital communication and RF testing. It provides a reliable switching solution for switching between multiple radio frequencies and for connecting and disconnecting high frequency devices.The AS222-92LF also offers excellent linearity and low distortion performance, with a very low insertion loss and low intermodulation distortion of typically better than -60dB. The device has a high isolation level of up to 30dB, which ensures that signals remain confined to the correct frequency range.The AS222-92LF has a maximum switching speed of 200 nanoseconds, which makes it suitable for high speed data transmission. It also has a low thermal transference rating of 11mW/°C, which helps to reduce power consumption while preventing overheating.In order to understand how the AS222-92LF functions, we must first look at its internal working principle. The switch consists of three armature circuits in which two pieces of metal are connected at the same point. When the switch is activated, one of the armatures will move, changing the connection points between the two metal pieces and causing the circuit to change from one state to another. The two pieces of metal in the different armatures are connected to either the power supply, the ground or the output port.The AS222-92LF is also equipped with a latch-ability parameter that allows the switch to remain in a particular state even after power has been removed from the source. This feature eliminates the need for a relay or a microcontroller to latch the switch in a particular state.In conclusion, the AS222-92LF offers a high performance, low power consumption and reliable switching solution for multiple wireless applications. Its low insertion loss and high isolation make it suitable for a wide range of RF applications, while its latch-ability parameter provides a reliable way of maintaining the desired switching state.

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