TGA4543
40.5 - 43.5 GHz Power Amplifier
Application Circuit
C15
1 uF
C11
0.01 uF
C5
100 pF
C6
100 pF
C12
0.01 uF
Id = 900 mA
R3
10 Ohm
C4
C10
100 pF
0.01 uF
R5
Vref
R1
Vg
-0.7 V Typical
14 13
12
11
10
9
40k Ohm
10 Ohm
C13
1 uF
Vdiff
Vdet
6 V
8
R4
40k Ohm
7
1
RF In
RF Out
6
2 3
4
5
C1
100 pF
C7
0.01 uF
R2
10 Ohm
C14
1 uF
C3
100 pF
C2
100 pF
C8
0.01 uF
C9
0.01 uF
Vd must be biased from both sides. Vg can be biased from either side.
Bias-up Procedure
Vg set to -1.5 V
Bias-down Procedure
Turn off RF supply
Vd set to +6 V
Reduce Vg to -1.5V. Ensure Id ~ 0 mA
Adjust Vg more positive until quiescent Id is 900 mA.
This will be ~ Vg = -0.7 V
Apply RF signal to RF Input
Turn Vd to 0 V
Turn Vg to 0 V
Preliminary Data Sheet: Rev – 9/15/12
- 9 of 12 -
Disclaimer: Subject to change without notice
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