SP2T PIN Diode Switch

Rev. V1

MSW200x-200

10

10

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SP2T Switch Evaluation Board Schematic

The evaluation boards for the MSW200x-200 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 MSW200x

-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.