Texas Instruments TRF3703, User Manual, Page: 10 / 22

DAC56x2 TRF3703-15
I I
Q
S0225-01
Q
I
I
Q Q
R2
R2
R2
R2
5 V
5 V
R1
R1
R3
R3
R1
R1
R3
R3
DAC568x TRF3703-33
I I
S0226-01
I I
R5
R5
5 V
5 V
R6
R1
R1
R3
R3
Overview
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TYPICAL VALUES
R1 R2 R3
53
Ω
210
Ω
931
Ω
NOTE: A DAC interface calculator is available ( SLWC083 ).
Figure 4. 1.5-V Interface Network for 19.2 mA Full Scale
LOSS 1 dB 2 dB 3 dB 4 dB 5 dB
Pullup R1 115 115 115 115 115
Pulldown R3 634 634 634 634 634
Series R5 11 21 30 37.4 45.3
Shunt R6 187 165 147 130 118
Figure 5. 3.3-V Interface Network for 19.2 mA Full Scale
TRF3703 Quadrature Modulator Evaluation Module 10 SLWU042B – October 2006 – Revised August 2008
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