
AD9005B
–4–
REV. 0
PIN FUNCTION DESCRIPTIONS
Pin
1
2
3
4
5
6
7, 8
9
10–19
20
21
22, 23
Name
GROUND
NC
ANALOG +V
S
T/H OUT
A/D IN
ANALOG –V
S
DNC
D
11
(MSB)
D
10
–D
1
D
(LSB)
DIGITAL +V
S
GROUND
Description
Circuit ground. All grounds should be connected together near the AD9005B.
Not internally connected.
Positive analog supply pin. Nominally +5 V dc.
Output of internal track-and-hold amplifier. Connect to Pin 5 for normal operation.
Input to internal A/D encoder. Connect to Pin 4 for normal operation.
Negative analog supply pin. Nominally –5.2 V dc.
Do not connect. Internal test point.
Most significant bit of digital output data.
Digital data outputs.
Least significant bit of digital output data.
Positive digital supply pin. Nominally +5 V dc.
Circuit ground. All grounds should be connected together near the AD9005B.
24
25, 26
27–29
30
31
32
33
34, 35
36
37, 38
39, 40
41
42
43
44
45
46
ENCODE
GROUND
DNC
ANALOG +V
S
DIGITAL –V
S
GROUND
NC
GROUND
DNC
GROUND
DNC
NC
ANALOG –V
S
NC
NC
ANALOG INPUT
GROUND
Convert command. TTL compatible, rising edge triggered.
Circuit ground. All grounds should be connected together near the AD9005B.
Do not connect. Internal test point.
Positive analog supply pin. Nominally +5 V dc.
Negative digital supply pin. Nominally –5.2 V dc.
Circuit ground. All grounds should be connected together near the AD9005B.
Not internally connected.
Circuit ground. All grounds should be connected together near the AD9005B.
Do not connect. Internal test point.
Circuit ground. All grounds should be connected together near the AD9005B.
Do not connect. Internal test point.
Not internally connected.
Negative analog supply pin. Nominally 5.2 V dc.
Not internally connected.
Not internally connected.
Analog input. Full scale of + 1.024 V.
Circuit ground. All grounds should be connected together near the AD9005B.
PIN DESIGNATIONS
GROUND
NC
GND
ANALOG INPUT
NC
NC
A/D IN
ANALOG –V
S
DNC
DNC
ANALOG –V
S
NC
DNC
DNC
GND
GND
DNC
ANALOG +V
S
T/H OUT
(MSB) D
11
D
10
D
9
D
8
D
7
GND
GND
D
6
D
5
D
4
D
3
D
2
D
1
NC
GND
DIGITAL –V
S
ANALOG +V
S
DNC
DNC
DNC
GND
GND
ENCODE
(LSB) D
0
DIGITAL +V
S
GND
GND
36
35
34
33
32
31
30
29
28
27
46
45
44
43
42
41
40
39
38
37
26
25
24
TOP VIEW
(Not to Scale)
AD9005B
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
12
23
NC = NO CONNECT
DNC = DO NOT CONNECT
OUTPUT CODING
ANALOG
INPUT
≥
+1.024 V
≤
1.024 V
D
11
1
0
D
10
1
0
D
9
1
0
D
8
1
0
D
7
1
0
D
6
1
0
D
5
1
0
D
4
1
0
D
3
1
0
D
2
1
0
D
1
1
0
D
0
1
0