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U2793B Datasheet, PDF (8/12 Pages) ATMEL Corporation – 300 MHZ QUADRATURE MODULATOR
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Figure 9. Typical Required VBBi Input Signal (Differential) versus LO Frequency
for PO = 1 dBm and PO = -3 dBm
1200
1000
800
PO = 0 dBm
PO = 1 dBm
600
400
PO = 3 dBm
200
0
0 50 100 150 200 250 300
fLO (MHz)
Figure 10. Evaluation Board Circuitry
L1
C1
PU
1
C2
2
20 C9
R1
19
3
18
C3
OUT
4
17
C4
5
16
U2793B
C7
L2
6
15
VS
C5
7
14
LO
8
C6
C8
13
9
12
10
11
8 U2793B
A
Ainv
GND
B
VRef Binv
4651C–CELL–07/04
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