TGA4514

10

TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 Info-mmw@tqs.com

July 2009 © Rev A

RF Output

RF Input

TGA4514

Vg_Bottom

Vg_Top

Vd_Top

Vd_Bottom

Electrical Schematic

1

3

5

2

6

4

Bias Procedures

Bias-up Procedure

Bias-down Procedure

Vg set to -1.5 V

Turn off RF supply

Vd_set to +6 V

Reduce Vg to -1.5V. Ensure Id ~ 0 mA

Adjust Vg more positive until quiescent Id is 1115 mA.

This will be ~ Vg = -0.45 V

Turn Vd to 0 V

Apply RF signal to input

Turn Vg to 0 V