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AD7885ABP Datasheet(PDF) 5 Page - Analog Devices

Part # AD7885ABP
Description  LC2MOS 16-Bit, High Speed Sampling ADCs
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7885ABP Datasheet(HTML) 5 Page - Analog Devices

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AD7884/AD7885
REV. C
–5–
ABSOLUTE MAXIMUM RATINGS
1
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
VSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
AVSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to –7 V
AGND Pins to DGND . . . . . . . . . . . . –0.3 V to VDD + 0.3 V
AVDD to VDD
2
. . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVSS to VSS
2
. . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
GND to DGND . . . . . . . . . . . . . . . . . –0.3 V to VDD + 0.3 V
VINS, VINF to AGND . . . . . . . . . . VSS –0.3 V to VDD + 0.3 V
VREF+ to AGND . . . . . . . . . . . . . . . VSS –0.3 V to VDD + 0.3 V
VREF– to AGND . . . . . . . . . . . . . . . VSS –0.3 V to VDD + 0.3 V
VINV to AGND . . . . . . . . . . . . . . . VSS –0.3 V to VDD + 0.3 V
Digital Inputs to DGND . . . . . . . . . . . –0.3 V to VDD + 0.3 V
Digital Outputs to DGND . . . . . . . . . . –0.3 V to VDD + 0.3 V
Operating Temperature Range
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
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
1Stresses above those listed under “Absolute Maximum Ratings” may cause
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.
2If the AD7884/AD7885 is being powered from separate analog and digital supplies,
AVSS should always come up before VSS. See Figure 12 for a recommended
protection circuit using Schottky diodes.
WARNING!
ESD SENSITIVE DEVICE
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.
PIN CONFIGURATIONS
DIP
DB2
DB1
DB0
DB13
DGND
DB11
AVSS
VDD
DB7
DB6
DB5
DB4
DB3
CS
RD
BUSY
DB8
DB9
DB10
DB12
V
DD
DB15
DB14
V INV
V
S
REF+
V
F
REF+
V REF–
AGNDS
AGNDF
AV
DD
VSS
GND
VSS
±3V S
IN
VSS
CONVST
GND
1
2
3
4
5
6
7
8
9
10
40
39
38
37
36
35
34
33
32
31
TOP VIEW
(Not to Scale)
AD7884
30
29
28
27
26
25
24
23
22
21
11
12
13
14
15
16
17
18
19
20
IN
±3V F
±5V S
IN
IN
±5V F
1
2
3
7
28
27
26
22
8
9
10
21
20
19
11
12
18
17
4
5
25
24
6
23
TOP VIEW
(Not to Scale)
13
14
16
15
AD7885
AV SS
VDD
CS
RD
V INV
V REF–
AGNDS
AGNDF
AV DD
GND
±3V
IN
VSS
CONVST
±5V S
IN
IN
±5V F
DB2
DB1
DB0
DGND
DB7
DB6
DB5
DB4
DB3
V
S
REF+
V
F
REF+
BUSY
HBEN
PLCC
±5V
INF
AD7884
TOP VIEW
(Not to Scale)
21
44
3
4
5
6
42
41
40
43
18
19
20
21
22
23
24
25
26
27
28
39
38
37
36
35
34
33
32
31
30
29
7
8
9
10
11
12
13
14
15
16
17
DGND
DB11
AV
DD
DB7
DB6
DB5
DB8
DB9
DB10
DB12
AGNDS
AGNDF
AV
SS
V
SS
GND
GND
NC
NC
NC = NO CONNECT
V
SS
V
DD
V
DD
AD7885A
TOP VIEW
(Not to Scale)
21
44
3
4
5
6
42
41 40
43
18
19
20
21
22
23
24
25
26
27
28
39
38
37
36
35
34
33
32
31
30
29
7
8
9
10
11
12
13
14
15
16
17
DGND
DB6
DB3
DB2
DB1
DB4
DB5
NC
DB7
V
DD
AGNDS
AGNDF
GND
GND
NC
NC
NC = NO CONNECT
±5V
INF
AV
DD
AV
SS
V
SS
V
SS
V
DD


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