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AD9853 数据表(PDF) 28 Page - Analog Devices

部件名 AD9853
功能描述  Programmable Digital QPSK/16-QAM Modulator
PDF  31 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9853 数据表(HTML) 28 Page - Analog Devices

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OBSOLETE
AD9853
–28–
REV. C
C33
10 F
+10V
FEC (SW2) FUNCTIONS
JUMPER FUNCTION
1-2
SOFT FEC
ENABLE/DISABLE
2-3
HARD FEC DISABLE
OPEN
HARD FEC ENABLE
OR EXTERNAL FEC
CONTROL VIA J11
WHEN USING
TRANSFORMER T1A,
REMOVE R3 AND R6
WHEN NOT USING T1A,
CONNECT E13 TO E14
AND LEAVE R3 AND
R6 IN PLACE
TST1
HI 4DM
J9
2
4
6
8
10
12
14
1
3
5
7
9
11
13
REST
E13
T1A
T1 – 1T
SIG
R6
25
4
2
6
1 : 1
E14
GND
AVDD
DAC BL
AVDD
AGND
DAC RSET
NC
AGND
PLL FILTER
PLL VCC
PLL GND
GND
CA CLK
CA DATA
DGND
DVDD
REF CLK IN
DGND
DVDD
DATA IN
TX ENABLE
DVDD
DGND
AD9853
U1
34
CAC
CAD
DUT+V
CLK
DUT+V
SDI
TXE
DUT+V
44
TST1
SMB
J10
EXTERNAL
FEC ENABLE
R7
3.9k
+5V
FECC
1
2
3
SW2
H3M
DIGITAL
MODULATOR
22
12
21
20
19
18
17
16
15
14
13
C31
0.1 F
R4
3.9k
DUT+V
C10
0.01 F
33
23
32 31 30 29 28 27 26 25 24
CAE
GND
1
3
DUT+V
DUT+V
DUT+V
GND
GND
R5
1300
NOTE:
C31 NORMALLY
NOT POPULATED
35
36
37
38
39
40
41
42
43
1
11
2
345
67
89
10
C25
0.1 F
DUT+V
C24
0.1 F
DUT+V
C23
0.1 F
DUT+V
C30
0.1 F
DUT+V
C29
0.1 F
DUT+V
DAC OUT/
FILTER IN
SMB
J6
E9
E1
E10
SIG
E2
SIG
R3
50
C6
68pF
(33pF)
C3
7pF
(6.8pF)
1
2
C9
56pF
(39pF)
E3 E4
E11 E12
AMP
SMB
J7
FILTER OUT/
AMP IN
C7
100pF
(82pF)
C4
33pF
(33pF)
C5
22pF
(27pF)
C8
82pF
(82pF)
L1
120NH
(180NH)
L2
100NH
(100NH)
L3
100NH
(150NH)
1
2
12
7TH ORDER ELIPTIC 50
LOW PASS FILTER
VALUES IN PARENTHESES – 45 MHz FILTER
VALUES NOT IN PARENTHESES – 65 MHz FILTER
TXENABLE
JUMPER CONFIGURATION
JUMPER
FUNCTION
E5-E6
HEADER CONNECTOR
FROM DG2020,
DATA GENERATOR
E7-E8
SOFTWARE CONTROL
OF TXENABLE
OPEN
HARD ENABLE OR
EXT. CONTROL VIA J4
T
XENABLE
E7 E5
E8 E6
SMB
J4
R11
3.9k
+5V
TXE
TXEE
GND
+5V
C17
0.1 F
Y1
14
VCC
OUT
8
GND
SW41
CLK
SMB
J2
R1
50
EXTERNAL
CLK
7
CRYSTAL OSC.
IF CLOCK
REMOVE SOURCE IS
Y1
J2 (EXTERNAL)
R1
Y1 (XTAL)
JUMPER FUNCTION
1-2
HARD POWER-DOWN
2-3
HARD POWER-DOWN
OR EXTERNAL CONTROL
VIA J3
NO
JUMPER
POWERED UP
AD8320 POWER-DOWN
SW1 FUNCTIONS
8PPT+5V
RZ1
2
3
4
5
6
7
8
LATCH
BUSCLK
BUSDAT
RESET
TXEN
BDAT
TSTATE
2.2k PULL-UP
NETWORK
TO +5V
THREE-STATE BUFFER
U4
74AC244
2A4 2Y4
2A3 2Y3
2A2 2Y3
2A1 2Y2
1A4 1Y4
1A3 1Y3
1A2 1Y2
1A1 1Y1
17
15
13
11
8
6
4
2
GND
GND
GND
BDAT
DAT
3
5
7
9
12
14
16
18
RBAK
BDAT
1G
2G
TSTAT
19
1
+5V
C22
0.1 F
LATCH
+5V
R8
3.9k
FEC
U3
74ACT573
9
8
7
6
5
4
3
2
TXEN
TSTATE
RESET
BUSDAT
BUSCLK
12
13
14
15
16
17
18
19
FECC
TXEE
TSAT
REST
DAT
BCLK
11
1
LATCH
C34
0.001 F
8D
8Q
7D
7Q
6D
6Q
5D
5Q
4D
4Q
3D
3Q
2D
2Q
1D
1Q
EN
OE
+5V
C21
0.1 F
"CENTRONICS"
PRINT PORT
CONN.
C36CRPX
LATCH
BUSCLK
BUSDAT
RESET
FEC
TXEN
TSTATE
RBAK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
J1
C20
10 F
+10V
TB1
POWER INPUT
CONNECTOR
DUT+V
GND
+5V
GND
+10V
1
2
3
4
5
75
OUTPUT
SMB 75
J8
C12
0.1 F
C2
0.1 F
VCCL
VIN
VREF
VCC
GND
GND
BYP
GND
GND
GND
20
19
18
17
16
15
14
13
12
11
+10V
+10V
CAD
CAC
CAE
GND
PDN
+10V
+10V
+10V
C32
0.1 F
PROGRAMMABLE
GAIN AMPLIFIER
C1
0.1 F
C11
0.1 F
R2
62
AMP
SDATA
CLK
DATEN
GND
VOCM
PD
VCC
VCC
VCC
VOUT
AD8320
U2
1
2
3
4
5
6
7
8
9
10
C16
0.1 F
+10V
SERIAL DATA IN
SMB
J5
R12
3.9k
+5V
SDI
SDI
SMB
J3
PODN
R10
3.9k
AD8320
EXTERNAL
POWERDOWN
1
2
3
GND
PDN
PODN
H3M
SW1
AD8320
POWERDOWN
SOURCE
SWITCH
C26
0.1 F
DUT+V
C27
0.1 F
DUT+V
C28
0.1 F
DUT+V
C15
0.1 F
+10V
C19
10 F
DUT+V
C13
10 F
+10V
C14
0.1 F
+10V
C18
10 F
+5V
Figure 39. Electrical Schematic of AD9853-xxPCB Evaluation Board



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