SP2T PIN Diode Switch

Rev. V1

MSW201x-201

7

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SP2T Switch Evaluation Board Schematic

The evaluation boards for the MSW201x family of

surface mount silicon PIN diode SP2T T-R switches

allow the full exercise of each switch for small signal

performance analysis, as well as for large signal

operation with maximum input signal power of 45

dBm (CW or peak power). Each evaluation board

includes the appropriate MSW201x-200 switch, DC

blocking capacitors at each RF port and bias

decoupling networks at each RF port which allow DC

or low frequency control signals to be applied to the

switch.

Three complementary control signals are required

for proper operation. Bias voltages are applied to the

TX bias port, RX bias port and the DC bias port to

control the state of the switch. A bias voltage of 5 V

must be applied to the Ant Bias (pin 3 of multi-pin

connector P1) port whenever the switch is in

operation.