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AD7890BR-10 Datasheet(PDF) 3 Page - Analog Devices

No. de pieza AD7890BR-10
Descripción Electrónicos  LC2MOS 8-Channel, 12-Bit Serial, Data Acquisition System
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD7890BR-10 Datasheet(HTML) 3 Page - Analog Devices

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–3–
REV. A
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
AD7890-10, AD7890-4 . . . . . . . . . . . . . . . . . . . . . . .
±17 V
AD7890-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5 V, +10 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 Versions) . . . . . . . . . . . –40
°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . . –55
°C to +125°C
Storage Temperature Range . . . . . . . . . . . –65
°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +150
°C
Plastic DIP Package, Power Dissipation . . . . . . . . . . 450 mW
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . 105
°C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . +260
°C
Cerdip Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . . 70
°C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . +300
°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . . 75
°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
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.
ORDERING GUIDE
Temperature
Linearity
Package
Model
Range
Error
Option*
AD7890AN-2
–40
°C to +85°C
±1 LSB
N-24
AD7890BN-2
–40
°C to +85°C
±1/2 LSB
N-24
AD7890AR-2
–40
°C to +85°C
±1 LSB
R-24
AD7890BR-2
–40
°C to +85°C
±1/2 LSB
R-24
AD7890SQ-2
–55
°C to +125°C
±1 LSB
Q-24
AD7890AN-4
–40
°C to +85°C
±1 LSB
N-24
AD7890BN-4
–40
°C to +85°C
±1/2 LSB
N-24
AD7890AR-4
–40
°C to +85°C
±1 LSB
R-24
AD7890BR-4
–40
°C to +85°C
±1/2 LSB
R-24
AD7890SQ-4
–55
°C to +125°C
±1 LSB
Q-24
AD7890AN-10
–40
°C to +85°C
±1 LSB
N-24
AD7890BN-10
–40
°C to +85°C
±1/2 LSB
N-24
AD7890AR-10
–40
°C to +85°C
±1 LSB
R-24
AD7890BR-10
–40
°C to +85°C
±1/2 LSB
R-24
AD7890SQ-10
–55
°C to +125°C
±1 LSB
Q-24
NOTE
*N = Plastic DIP; Q = Cerdip; R = SOIC.
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 AD7890 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.
WARNING!
ESD SENSITIVE DEVICE
Parameter
A Versions
1
B Versions
S Version
Units
Test Conditions/Comments
LOGIC OUTPUTS
Output High Voltage, VOH
4.0
4.0
4.0
V min
ISOURCE = 200 µA
Output Low Voltage, VOL
0.4
0.4
0.4
V max
ISINK = 1.6 mA
Serial Data Output Coding
AD7890-10
2s Complement
AD7890-4
Straight (Natural) Binary
AD7890-2
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
5.9
5.9
5.9
µs max
fCLK IN = 2.5 MHz, MUX OUT
Connected to SHA IN
Track/Hold Acquisition Time
2, 5
22
2
µs max
POWER REQUIREMENTS
VDD
+5
+5
+5
V nom
±5% for Specified Performance
IDD (Normal Mode)
10
10
10
mA max
Logic Inputs = 0 V or VDD
IDD (Standby Mode)
6 @ +25
°C15
15
15
µA typ
Logic Inputs = 0 V or VDD
Power Dissipation
Normal Mode
50
50
50
mW max
Typically 30 mW
Standby Mode @ +25
°C75
75
75
µW typ
NOTES
1Temperature ranges are as follows: A, B Versions: –40
°C to –85°C; S Version: –55°C to +125°C.
2See Terminology.
3This sample rate is only achievable when tiling the part in external clocking mode.
4Full-scale error match applies to positive full scale for the AD7890-2 and AD7890-4. It applies to both positive and negative full scale for the AD7890-10.
5Sample tested @ +25
°C to ensure compliance.
6Analog inputs on AD7890-10 must be at 0 V to achieve correct power-down current.
Specifications subject to change without notice.
AD7890


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