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AD7864 Datasheet(PDF) 5 Page - Analog Devices

No. de Pieza. AD7864
Descripción  4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC
Descarga  19 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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AD7864 Datasheet(HTML) 5 Page - Analog Devices

 
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AD7864
–5–
REV. A
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 the AD7864 features 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.
ABSOLUTE MAXIMUM RATINGS*
(TA = +25
°C unless otherwise noted)
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
Analog Input Voltage to AGND
AD7864-1 (
±10 V Input Range) . . . . . . . . . . . . . . . . ±20 V
AD7864-1 (
±5 V Input Range) . . . . . . . . . . . –7 V to +20 V
AD7864-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V to +20 V
AD7864-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . –1 V to +20 V
Reference Input Voltage to AGND . . . –0.3 V to VDD + 0.3 V
Digital Input Voltage to DGND . . . . . –0.3 V to VDD + 0.3 V
Digital Output Voltage to DGND . . . . –0.3 V to VDD + 0.3 V
Operating Temperature Range
Commercial (A, B Version) . . . . . . . . . . . . –40
°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65
°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150
°C
MQFP Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
θ
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 95
°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215
°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220
°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; 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.
ORDERING GUIDE
Input
Relative
Temperature
Package
Package
Model
Ranges
Accuracy
Range*
Description
Option
AD7864AS-1
±5 V, ±10 V
±1 LSB
–40
°C to +85°C
Plastic Lead Quad Flatpack
S-44
AD7864BS-1
±5 V, ±10 V
±0.5 LSB
–40
°C to +85°C
Plastic Lead Quad Flatpack
S-44
AD7864AS-3
±2.5 V
±1 LSB
–40
°C to +85°C
Plastic Lead Quad Flatpack
S-44
AD7864AS-2
0 V to 2.5 V, 0 V to 5 V
±1 LSB
–40
°C to +85°C
Plastic Lead Quad Flatpack
S-44
*The A Version is fully specified up to +105
°C with degraded INL and DNL specifications of ± 2 LSBs max.
PIN CONFIGURATION
12 13 14 15 16 17 18 19 20 21 22
3
4
5
6
7
1
2
10
11
8
9
40 39 38
41
42
43
44
36 35 34
37
29
30
31
32
27
28
25
26
23
24
33
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
DB7
DB8
DB9
DB10
DB11
CLKIN
INT/EXT CLK
BUSY
FRSTDATA
CONVST
CS
RD
WR
SL1
SL2
SL3
SL4
H/S SEL
AGND
AVDD
VREF
VREFGND
AD7864
WARNING!
ESD SENSITIVE DEVICE


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