Advance Product Datasheet
April 6, 2006
TGA4819-SL
Laboratory - Bias ON/OFF Procedure
Vd=8V, CPC=50%
Bias ON
Bias OFF
1. Disable the output of the PPG
2. Set VD = 0V, VCTRL = 0V & VG = 0V
3. Set VG = -1.5V
1. Disable the output of the PPG
2. Set VCTRL = 0V
3. Set VD = 0V
4. Increase VD to 8V observing Id
- Assure ID = 0mA
4. Set VG = 0V
5. Set VCTRL = +1V
- ID should still be 0mA
6. Make VG more positive until ID = 310mA.
VG will be approximately -0.3V.
7. Enable the output of the PPG.
8. Output Swing Adjust: Adjust VCTRL slightly positive to increase output swing or
adjust VCTRL slightly negative to decrease the output swing.
9. Crossover Adjust: Adjust VG slightly positive to push the crossover down or
adjust VG slightly negative to push the crossover up.
9
TriQuint Semiconductor Texas : (972)994 8465 Fax (972)994 8504 Web: www.triquint.com
TRIQUINT [ TRIQUINT SEMICONDUCTOR ]
