tga4512-sm TriQuint Semiconductor, tga4512-sm Datasheet - Page 6

• Manufacturer Part Number: tga4512-sm
• Description: Ka-band Driver Amplifier
• Manufacturer: TriQuint Semiconductor

Preliminary Data Sheet: Rev -
TGA4512-SM
Ka-Band Driver Amplifier
© 2010 TriQuint Semiconductor, Inc.
Application Circuit
Bias-up Procedure
Vg set to -1.5 V
Vd set to +6 V
Adjust Vg more positive until quiescent Id is 80 mA.
This will be ~ Vg = -0.45 V
Apply RF signal to RF Input
RF IN
J1
03/12/10
1
2
3
12
4
11
5
100 pF
C2
- 6 of 12 -
10
100 pF
6
C1
Bias-down Procedure
Turn off RF supply
Reduce Vg to -1.5V. Ensure Id ~ 0 mA
Turn Vd to 0 V
Turn Vg to 0 V
Connecting the Digital World to the Global Network
10 Ohms
R1
9
8
7
Disclaimer: Sub ject to change without notice
Vd = 6 V
1 uF
Vg = -0.45 V Typical
C3
RF OUT
J2
1 uF
C4
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