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TRF2020 bảng dữ liệu(PDF) 2 Page - Texas Instruments

tên linh kiện TRF2020
Giải thích chi tiết về linh kiện  SYNTHESIZER FOR GLOBAL SYSTEM FOR MOBILE GSM CELLULAR TELEPHONES
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TRF2020 bảng dữ liệu(HTML) 2 Page - Texas Instruments

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TRF2020
SYNTHESIZER FOR GLOBAL SYSTEM
FOR MOBILE (GSM) CELLULAR TELEPHONES
SLWS020B – FEBRUARY 1995 – REVISED JANUARY 1998
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
functional block diagram
1/32, 33
Prescaler
5-Bit
Counter
11-Bit
Counter
Phase
Detector
Charge
Pump
F
R
Control Logic
2
511
Speed-Up
Counter
6
C
R
RA
B
1/8, 9
Prescaler
3-Bit
Counter
11-Bit
Counter
Control Logic
311
S
SD
E
Phase
Detector
Charge
Pump
Lock
Detect
2
U
S
2
Speed-Up
Counter
Current
Reference
1/8, 9
Prescaler
3-Bit
Counter
11-Bit
Counter
Control Logic
311
T
TH
J
Phase
Detector
Charge
Pump
6
G
Speed-Up
Counter
T
6
G
Main Reference Select
AUX-1 Reference Select
AUX-2 Reference Select
2
2
2
L
M
N
÷ 1 ÷ 2 ÷ 4 ÷ 8
11-Bit Reference
Counter
K
11
P
Reference Counter
Power Enable
Lock Detect Select
Test Mode
AUX-2 Synthesizer
Reference Postscaler Select
Auxiliary Current Ratio
AUX-1 Synthesizer
Auxiliary Speed-Up
Main Current Ratio
Main Synthesizer
22-Bit Shift Register
Address
Decoder
Word-3
Word-2
Word-1
Word-0
2 Bit
RPM
SWM
PDM
LD
SW1
PDA1
VSSA
VDDA
RPA
SW2
PDA2
VDD
VSS
STROBE
DATA
CLOCK
RF_IN
AUX1_IN
AUX2_IN
VDDPM
VDDP1
VDDP2
VSSP
REF_IN
13
24
12
14
23
11
8
7
15
18
17
5
21
22
19
16
20
10
9
1
6
4
3
2
2
K



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