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參數(shù)資料
| 型號： | AD7890SQ-2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 20 Characters x 4 Lines, 5x7 Dot Matrix Character and Cursor |
| 中文描述： | 8-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, CDIP24 |
| 封裝： | 0.300 INCH, CERDIP-24 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 302K |
| 代理商： | AD7890SQ-2 |
–3–
REV. A
ABSOLUT E MAX IMUM RAT INGS*
(T
A
= +25
°
C unless otherwise noted)
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
V
DD
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 V
DD
+ 0.3 V
Digital Input Voltage to DGND . . . . . –0.3 V to V
DD
+ 0.3 V
Digital Output Voltage to DGND . . . . –0.3 V to V
DD
+ 0.3 V
Operating T emperature Range
Commercial (A, B Versions) . . . . . . . . . . . –40
°
C to +85
°
C
Extended (S Version) . . . . . . . . . . . . . . . . –55
°
C to +125
°
C
Storage T emperature Range . . . . . . . . . . . –65
°
C to +150
°
C
Junction T emperature . . . . . . . . . . . . . . . . . . . . . . . . +150
°
C
Plastic DIP Package, Power Dissipation . . . . . . . . . . 450 mW
θ
JA
T hermal Impedance . . . . . . . . . . . . . . . . . . . . 105
°
C/W
Lead T emperature (Soldering, 10 sec) . . . . . . . . . . +260
°
C
Cerdip Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
θ
JA
T hermal Impedance . . . . . . . . . . . . . . . . . . . . . 70
°
C/W
Lead T emperature (Soldering, 10 sec) . . . . . . . . . . +300
°
C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 450 mW
θ
JA
T hermal Impedance . . . . . . . . . . . . . . . . . . . . . 75
°
C/W
Lead T emperature, 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. T his 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.
ORDE RING GUIDE
T emperature
Range
Linearity
E rror
Package
Option*
Model
AD7890AN-2
AD7890BN-2
AD7890AR-2
AD7890BR-2
AD7890SQ-2
AD7890AN-4
AD7890BN-4
AD7890AR-4
AD7890BR-4
AD7890SQ-4
AD7890AN-10
AD7890BN-10
AD7890AR-10
AD7890BR-10
AD7890SQ-10
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–55
°
C to +125
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–55
°
C to +125
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–55
°
C to +125
°
C
±
1 LSB
±
1/2 LSB
±
1 LSB
±
1/2 LSB
±
1 LSB
±
1 LSB
±
1/2 LSB
±
1 LSB
±
1/2 LSB
±
1 LSB
±
1 LSB
±
1/2 LSB
±
1 LSB
±
1/2 LSB
±
1 LSB
N-24
N-24
R-24
R-24
Q-24
N-24
N-24
R-24
R-24
Q-24
N-24
N-24
R-24
R-24
Q-24
NOT E
*N = Plastic DIP; Q = Cerdip; R = SOIC.
C AUT ION
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. T herefore, 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
T est Conditions/Comments
LOGIC OUT PUT S
Output High Voltage, V
OH
Output Low Voltage, V
OL
Serial Data Output Coding
AD7890-10
AD7890-4
AD7890-2
4.0
0.4
4.0
0.4
4.0
0.4
V min
V max
I
SOURCE
= 200
μ
A
I
SINK
= 1.6 mA
2s Complement
Straight (Natural) Binary
Straight (Natural) Binary
CONVERSION RAT E
Conversion T ime
5.9
5.9
5.9
μ
s max
f
CLK IN
= 2.5 MHz, MUX OUT
Connected to SHA IN
T rack/Hold Acquisition T ime
2, 5
2
2
2
μ
s max
POWER REQUIREMENT S
V
DD
I
DD
(Normal Mode)
I
(Standby Mode)
6
@ +25
°
C
Power Dissipation
Normal Mode
Standby Mode @ +25
°
C
+5
10
15
+5
10
15
+5
10
15
V nom
mA max
μ
A typ
±
5% for Specified Performance
Logic Inputs = 0 V or V
DD
Logic Inputs = 0 V or V
DD
50
75
50
75
50
75
mW max
μ
W typ
T ypically 30 mW
NOT ES
1
T emperature ranges are as follows: A, B Versions: –40
°
C to –85
°
C; S Version: –55
°
C to +125
°
C.
2
See T erminology.
3
T his sample rate is only achievable when tiling the part in external clocking mode.
4
Full-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.
5
Sample tested @ +25
°
C to ensure compliance.
6
Analog 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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