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Can I use ADG801to switch DC bias of Gain block?

Question asked by Rajan_chd on Jun 7, 2017
Latest reply on Jun 13, 2017 by EricC

Hi,

 

I am designing a RF transmitter/ receiver system. While in receive mode (which is default mode) all the RF devices (amplifiers) of the transmitter chain need to be in off state. They will be switched ON only when in transmit mode.

Generally I use MOSFET & BJT combination to switch the DC supply for RF devices (amplfiiers).

 

In case of gain amplifier (low RF power devices) I want to use ADG801 or similar device because this gain amplifier needs only 150mA (max) at 5.0V. ADG801 will help me in reducing the BOM as well as occupy less space & easy functioning.

 

Kindly give your suggestion on this approach.

 

It is circuit diagram which describes the connection of ADG801 switch with Gain block

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