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TGA4802-EPU Datasheet(PDF) 8 Page - TriQuint Semiconductor

Part # TGA4802-EPU
Description  12.5Gb/s Modulator Driver Amplifier
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Manufacturer  TRIQUINT [TriQuint Semiconductor]
Direct Link  http://www.triquint.com
Logo TRIQUINT - TriQuint Semiconductor

TGA4802-EPU Datasheet(HTML) 8 Page - TriQuint Semiconductor

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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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