AS179-000

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RF switches are crucial components in telecommunications and broadcasting systems. They can be used to perform various tasks extending from controlling the signal paths to demodulation. The AS179-000 switch is a highly versatile device that is being used in applications across different industries.

Overview

The AS179-000 RF switch is developed by Alpha and Omega Semiconductor. It is a single-pole, double-throw (SPDT) switch with an integrated SPDT amplifier. This amplifier boosts the signal before it enters the switch. The AS179-000 switch is designed to work with voltages ranging from 1.5 to 6 V. It has a low on-resistance of 2.5 ohms and an accurate off-isolation of up to -68 dB. It also has a high isolation of -48 dB @ 3 GHz and can handle input power levels up to +14 dBm.

Application Fields

The AS179-000 switch is primarily used in mobile communications systems such as cellular phones and base stations. The device is also used in satellite television systems, cordless phones and other wireless communications systems. The switch has been proven to be reliable and versatile in a variety of applications, such as switching antenna connections, controlling input levels, elevating signal levels and improving transmission quality.

Working Principle

The switch is used to control the signal flow between two ports. It can be used to isolate the two ports when they are not in use or to direct the signal to the desired port. The main advantage of the switch is that it provides high isolation and low voltage drop across the two ports. It also provides accurate switching and fast response time.

The switch is connected to a power source and the signal source. The signal is amplified by the integrated amplifier before entering the switch. The switch is then switched between the ports depending on the control input. The switch can be switched manually, or by using an external voltage or current. Depending on the voltage or current applied, the switch will direct the amplified signal to the desired port. Once the desired port is reached, the switch will remain in this position until the control voltage or current is changed.

Conclusion

The AS179-000 RF Switch is a highly reliable and versatile switch that can be used in a variety of applications including cellular phones, base stations, satellite television systems, cordless phones and other wireless communications systems. The integrated SPDT amplifier boosts the signal before it enters the switch, providing higher isolation and lower voltage drop across the two ports. It can be manually switched or be controlled with an external voltage or current. The switch has been proven to be reliable in different applications, making it a popular choice for many wireless communications systems.

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