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TGA4802-EPU Datasheet(PDF) 8 Page - TriQuint Semiconductor |
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TGA4802-EPU Datasheet(HTML) 8 Page - TriQuint Semiconductor |
8 / 10 page 8 Note: Devices designated as EPU are typically early in their characterization process prior to finalizing all electrical and process specifications. Specifications are subject to change without notice TriQuint Semiconductor Texas Phone: (972)994-8465 Fax: (972)994-8504 Email: info-mmw@tqs.com Web: www.triquint.com Advance Product Information July 22, 2004 Bias ON 1. Disable the RF source (PPG) 2. Set VdT=0V Vctrl=0V and Vg=0V 3. Set Vg=-1.5V 4. Increase VdT to 7V observing Id. - Assure Id=0mA 5. Set Vctrl=+1.0V - Id should still be 0mA 6. Make Vg more positive until Idd=170mA. - Typical value for Vg is -0.2V 7. Measure V+, adjust VdT such that V+ is 6V. - This will set Vd(RFout) to approximately 6V. - Idd will increase slightly 8. Adjust Vg such that Idd=170mA. 9. Enable the RF source (PPG) - Set Vin=2V 10. Output Swing Adjust: Adjust Vctrl slightly positive to increase output swing or adjust Vctrl slightly negative to decrease the output swing. - Typical value for Vctrl is +1.0V for Vo=7V. 11. Crossover Adjust: Adjust: Vg slightly positive to push the crossover down or adjust Vg slightly negative to push the crossover up. - Typical value for Vg is -0.2V to center crossover with Vo=7V. Bias OFF 1. Disable the output of the PPG 2. Set Vctrl=0V 3. Set VdT=0V 4. Set Vg=0V Bias Procedure for 7V Output Notes: 1. Assure Vctrl never exceeds Vd during Bias ON and Bias OFF sequences and during normal operation. TGA4802EPU |
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