RFUV1003 Datasheet, PDF (7/10 Pages) RF Micro Devices – GaAs MMIC IQ UpConverter 12GHz to 16GHz

RFUV1003
Typical Bias Sequence and Gain Control
Optimum linearity versus gain is achieved using sequential bias. At maximum gain (V_C1 ,V_C4), V_C2 and V_C3 are set at -4V. (V_C1
,V_C4), V_C2 and V_C3 are biased in sequence. The first dynamic range is achieved by setting V_C2 and V_C3 at -4V and varying (V_C1
,V_C4) over the (-4V to -1.25V) range as shown in the table below. Similarly second dynamic range is achieved by setting (V_C1
,V_C4) at -1V, setting V_C3 to -4V and varying V_C2 over the (-2.5V to -1.25V) range. Finally third dynamic range is achieved by
setting (V_C1 ,V_C4) and V_C2 at -1V, and varying V_C3 over the (-2.5V to -1V) range.
Bias Sequence 1 (Typical)
VC1,
VC4
VC2
VC3
Gmax
Gmin
-4 -2.5 -2.25 -2 -1.75 -1.5 -1.25 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-4 -4 -4 -4 -4 -4 -4 -2.5 -2.25 -2 -1.75 -1.5 -1.25 -1 -1 -1 -1 -1 -1
-4 -4 -4 -4 -4 -4 -4 -4 -4 -4 -4 -4 -4 -2.5 -2.25 -2 -1.75 -1.5 -1
Package Outline Drawing (Dimensions in millimeters)
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
DS140213
For sales or technical support, contact RFMD at +1.336.678.5570 or [e-mail].
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
7 of 10