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require IC for swicthing of base band signals in freq range DC-20MHz, with input and output levels upto 9 dBm at 50 ohms load. Is AD8174 right choice?

Whether IC AD8174 suitable for following requirements?

Base band switching IC in freq range DC- 40MHz

Input level: +5dBm at 50 ohms

Output drive level: +9dBm at 50 ohms

Slew rate better than 500V/s

High input to output isolation within the band

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  • Dear Anna

    Thanks for the reply.

    Please find our application Block Diagram attached along with. We are using two AD devices i.e AD8174 as MUX and AD8079 for line driving. As per our application we need to switch between four Baseband signals (BB_IN1, BB_IN2, BB_IN3, BB_IN4) to two Baseband outputs (BB_OUT1 and BB_OUT2). Specifications of In and OUT signals are as follows:

    BB_IN: DC-20MHz, +5dBm

    BB_OUT: DC-20MHz, +11dBm, drives 50 Ohms load

    Total path gain : 6dB

    Q1. Please suggest whether the circuit is appropriate for above requirement, any limitations or considerations?

    Q2. Whether AD8079 can be used as unity gain driver as shown in input stages?

    pl reply as we are into design finalization.

Reply
  • Dear Anna

    Thanks for the reply.

    Please find our application Block Diagram attached along with. We are using two AD devices i.e AD8174 as MUX and AD8079 for line driving. As per our application we need to switch between four Baseband signals (BB_IN1, BB_IN2, BB_IN3, BB_IN4) to two Baseband outputs (BB_OUT1 and BB_OUT2). Specifications of In and OUT signals are as follows:

    BB_IN: DC-20MHz, +5dBm

    BB_OUT: DC-20MHz, +11dBm, drives 50 Ohms load

    Total path gain : 6dB

    Q1. Please suggest whether the circuit is appropriate for above requirement, any limitations or considerations?

    Q2. Whether AD8079 can be used as unity gain driver as shown in input stages?

    pl reply as we are into design finalization.

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