AD7885 AD [Analog Devices], AD7885 Datasheet - Page 5

• Manufacturer Part Number: AD7885
• Description: LC2MOS 16-Bit, High Speed Sampling ADCs
• Manufacturer: AD [Analog Devices]

REV. C
ABSOLUTE MAXIMUM RATINGS
V
AV
V
AV
AGND Pins to DGND . . . . . . . . . . . . –0.3 V to V
AV
AV
GND to DGND . . . . . . . . . . . . . . . . . –0.3 V to V
V
V
V
V
Digital Inputs to DGND . . . . . . . . . . . –0.3 V to V
Digital Outputs to DGND . . . . . . . . . . –0.3 V to V
CONVST
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although these devices feature proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
AGNDS
AGNDF
DD
SS
IN
REF+
REF–
INV
3V
3V
5V
5V
V
BUSY
AV
AV
V
GND
GND
DD
SS
DD
SS
REF–
S, V
V
V
V
V
IN
IN
IN
IN
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
INV
CS
RD
DD
DD
SS
SS
SS
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
S
S
to AGND . . . . . . . . . . . . . . . V
F
F
to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to –7 V
to V
to AGND . . . . . . . . . . . . . . . V
to AGND . . . . . . . . . . . . . . . V
to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to V
IN
10
11
12
13
14
15
16
17
18
19
20
1
2
4
5
9
3
6
7
8
F to AGND . . . . . . . . . . V
SS
DD
2
(Not to Scale)
AD7884
TOP VIEW
2
. . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
. . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
39
36
40
38
37
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
V
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DGND
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
V
V
REF+
REF+
DD
DIP
S
F
CONVST
AGNDS
AGNDF
V
5V
5V
AV
AV
REF–
3V
GND
V
V
IN
IN
CS
RD
DD
DD
SS
SS
IN
1
S
F
SS
SS
SS
SS
10
11
12
13
14
1
2
3
4
5
6
7
8
9
–0.3 V to V
–0.3 V to V
–0.3 V to V
–0.3 V to V
(Not to Scale)
TOP VIEW
AD7885
DD
DD
DD
DD
DD
DD
DD
DD
PIN CONFIGURATIONS
27
26
25
24
21
20
18
16
28
23
22
19
17
15
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
+ 0.3 V
DB7
DB6
DB5
DB4
DGND
DB3
DB2
DB1
DB0
BUSY
HBEN
V
V
V
REF+
INV
REF+
S
F
–5–
Operating Temperature Range
Storage Temperature Range . . . . . . . . . . . –65 C to +150 C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300 C
Power Dissipation (Any Package) to +75 C . . . . . . . 1000 mW
Derates above +75 C by . . . . . . . . . . . . . . . . . . . . 10 mW/ C
1
2
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those listed in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
AV
protection circuit using Schottky diodes.
Stresses above those listed under “Absolute Maximum Ratings” may cause
If the AD7884/AD7885 is being powered from separate analog and digital supplies,
Commercial Plastic (A, B Versions) . . . . . –40 C to +85 C
Industrial Cerdip (A, B Versions) . . . . . . . . –40 C to +85 C
Extended Cerdip (T Versions) . . . . . . . . –55 C to +125 C
SS
should always come up before V
AGNDS
AGNDF
AGNDS
AGNDF
±5V
±5V
AV
AV
AV
AV
GND
GND
GND
GND
V
V
V
V
V
V
IN
NC
NC
IN
DD
DD
SS
DD
DD
SS
SS
SS
SS
SS
F
F
10
11
12
13
14
15
16
17
10
11
12
13
14
15
16
17
7
8
9
7
8
9
18
6
18
6
19
19
5
5
20
4
4
20
21
3
3
21
PLCC
(Not to Scale)
(Not to Scale)
22
AD7885A
2
AD7884
22
TOP VIEW
2
TOP VIEW
23
1
1
23
SS
AD7884/AD7885
. See Figure 12 for a recommended
24
44
44
WARNING!
24
43
25
43
25
42
26
NC = NO CONNECT
42
26
NC = NO CONNECT
27
41
41 40
27
40
28
28
ESD SENSITIVE DEVICE
39
38
37
36
35
34
33
32
31
30
29
39
38
37
36
35
34
33
32
31
30
29
DB9
DB8
DB7
DB6
DB5
DB12
DB11
DB10
NC
DGND
V
DB7
DB6
NC
DB5
DB4
NC
DGND
V
DB3
DB2
DB1
DD
DD