AD9853 Analog Devices, AD9853 Datasheet - Page 28

• Manufacturer Part Number: AD9853
• Description: Programmable Digital OPSK/16-QAM Modulator
• Manufacturer: Analog Devices

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