TGA4823-2-SM
Electrical Schematic
Bias Procedures
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. Set Vg = 0V
4. Increase Vd to 8V observing Id
- Assure Id = 0mA
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.
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May 2012 © Rev C
TRIQUINT [ TRIQUINT SEMICONDUCTOR ]
