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SA900 데이터 시트보기 (PDF) - Philips Electronics
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SA900
I/Q transmit modulator
Philips Electronics
SA900 Datasheet PDF : 20 Pages
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Philips Semiconductors
I/Q transmit modulator
Preliminary specification
SA900
XTAL_1
XTAL_2
C1
XO
CVAR
C2
Figure 7. Crystal Oscillator Configuration
SR00642
TXEN
DATA
CLOCK
STROBE
LSB
T1 T2 T3
MSB
T4
TRANSMIT ENABLED
SYN_EN
1
1
T1
+
T2
+
T3
+
3CLOCK
, T4
+
3CLOCK
SYNTHESIZER ENABLED
Figure 8. Chip Timing Diagram
SR00643
V
CC
100pF
1nF
L1
L2 1000pF
34
OR
SA900
TYPICAL VALUES
50
Ω
L1 = 39nH
L2 = 22nH
SA900
V
CC
L3
34
100pF
C1
TYPICAL VALUES
L3 = 12nH
C1 = 1.5pF
Figure 9. DUALTX Output Matching
1nF
50
Ω
SR00644
1997 Sept 16
13
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