AlGaAs SPST Non-Reflective PIN Diode Switch

Rev 2.0

MA4AGSW1A

7

MA4AGSW1A Schematic for 10 – 30 GHz Operation

Notes:

1. “ D.C. Bias 1” and “ D.C. Bias B ” Nodes can be connected together.

2. Diode Junction Forward Bias Voltage, ∆ Vf @ 10 mA ~ 1.35 V @ + 25 ° C.

Table I: D.C. to RF Truth Table

J1-J2 Low Loss :

Good VSWR at J1 & J2

J1-J2 Isolation :

Good VSWR at J2

D.C. Bias 1 = -1.35V @ - 10mA

D.C. Bias 1 = = + 1.35V @ + 10mA

D.C. Bias B = -1.35V @ 0mA

D.C. Bias B = + 1.35V @ + 10mA

AlGaAs Switch Die Shown in Dotted Outline

DC Bias 1

J2

J1

DC Bias B

(For Match Diode)

4.7 nH

DC Ground Return

47 Ω

4.7 nH

10 pF

10 pF

10 pF

10 pF

4.7 nH

10 pF