AD7008JP50 Analog Devices Inc, AD7008JP50 Datasheet - Page 16

• Manufacturer Part Number: AD7008JP50
• Description: IC CMOS DDS MODULATOR 44-PLCC
• Manufacturer: Analog Devices Inc

Specifications of AD7008JP50

• Rohs Status: RoHS non-compliant
• Noise Floor: *
• Voltage - Supply: 5V
• Package / Case: 44-LCC

AD7008
Controlling the AD7008/PCB
The AD7008/PCB is designed to allow control (frequency
specification, reset, etc.) through the parallel printer port of a
standard IBM-compatible PC. The user simply disconnects the
printer cable from the printer and inserts it into edge connector
P1 of the evaluation board.
The printer port provides information to the AD7008/PCB
through eight data lines and four control lines. Control signals
are latched on the AD7008/PCB to prevent problems with long
printer cables.
Name
P1
CLOCK
FSEL
SDATA
SCLK
I
I
V
P2
LK1
OUT
OUT
REF
N
C36DRPF
P1
1
2
3
4
10
11
12
13
14
15
16
17
18
19
5
6
7
8
9
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
LATCH
D0
D1
D2
D3
D4
D5
D6
D7
RESET
LOAD
WR
Description
36-pin edge connector to connect to parallel
port of PC.
CMOS input for clock R6 provides termination.
CMOS input to select between Freq 0 and Freq 1.
Low selects Freq 0.
CMOS input for serial input pin.
CMOS input for clocking in SDATA.
Analog output.
Complementary analog output.
Test point for V
+5 V and ground power connection.
External sleep command input.
LATCH
RESET
D0
D1
D2
D3
D4
D5
D6
D7
LOAD
WR
10
2
3
4
5
6
7
8
9
10PB+5
INPUTS/OUTPUTS
RZ1
10k
2
3
4
5
6
6PB+5
4.7k
RZ2
SMB
FSELECT
SMB
CLK
REF
SMB
SDATA
pin.
0.1µF
R3
10k
50
OPTIONAL
+5V
R6
C9
SMB
SCLK
10k
R2
14
V
7
XTAL1
V
CC
OUT
EE
R1
10k
8
H3M
LK1
1
2
3
RESET
LLOAD
LWR
+5V
GND
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
Figure 36.
26
10
11
12
13
14
15
16
27
32
33
34
35
36
42
30
38
37
19
20
21
22
23
24
25
41
31
8
9
–16–
SLEEP
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
TC0
TC1
TC2
TC3
LOAD
SCLK
SDATA
CLK
RESET
WR
CS
FSELECT
DUT7008P
A 3.5" floppy disk containing software to control the AD7008 is
provided with the AD7008/PCB. This software was developed
using C. The C source code is provided in a file named
A:\AD7008.C, which the user may view, run, or modify.
An executable version of this software is also provided, and can
be executed from DOS by typing “A:\AD7008.” The software
prompts the user to provide the necessary information needed
by the program. Additional information is included in a test file
named A:\readme.txt.
A windows 3.1 executable called WIN7008 is also included.
FSADJUST
U1
0.048 (1.21)
0.042 (1.07)
COMP
AGND
DGND
DGND
DGND
DGND
TEST
V
I
I
OUT
OUT
V
V
V
V
REF
AA
DD
DD
DD
(0.50)
0.020
1
17
18
R
6
5
2
4
3
28
39
44
7
29
43
40
FSADJ
390
+5V
+5V
+5V
+5V
17
C6
0.1µF
7
18
LATCH
6
Dimensions shown in inches and (mm).
0.048 (1.21)
0.042 (1.07)
OUTLINE DIMENSIONS
C7
0.1µF
0.656 (16.66)
0.650 (16.51)
0.695 (17.65)
0.685 (17.40)
V
+5V
LOAD
(PINS DOWN)
REF
TOP VIEW
44-Pin PLCC (P-44A)
IDENTIFIER
WR
PIN 1
12
11
+5V
+5V
+5V
+5V
2
3
>
>
D
D
C
C
PR
PR
CL
CL
0.056 (1.42)
0.042 (1.07)
SQ
SQ
R5
50
+5VD
4
1
10
13
Q
Q
Q
Q
R4
50
5
6
9
8
40
28
U2
74HC74
U2
74HC74
PCTB2
29
LLOAD
39
L WR
P2
C2
0.1µF
SMB
I
OUT
1
2
SMB
I
OUT
0.180 (4.57)
0.165 (4.19)
0.110 (2.79)
0.085 (2.16)
C3
0.1µF
C4
0.1µF
C1
10µF
0.032 (0.81)
0.026 (0.66)
0.050
(1.27)
BSC
0.021 (0.53)
0.013 (0.33)
0.025 (0.63)
0.015 (0.38)
0.040 (1.01)
0.025 (0.64)
C5
0.1µF
C8
0.1µF
0.63 (16.00)
0.59 (14.99)
REV. B
+5V