參數(shù)資料
型號(hào)： EVAL-AD7731EB
廠商： Analog Devices, Inc.
英文描述： Low Noise, High Throughput 24-Bit Sigma-Delta ADC
中文描述： 低噪聲，高吞吐量的24位Σ-Δ模數(shù)轉(zhuǎn)換器
文件頁數(shù)： 5/44頁
文件大?。?/td> 411K
代理商： EVAL-AD7731EB
AD7731
–5–
REV. 0
ABSOLUT E MAX IMUM RAT INGS*
(T
A
= +25
°
C unless otherwise noted)
AV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AV
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
DV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
DV
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . –5 V to +0.3 V
AV
DD
to DV
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . –2 V to +5 V
Analog Input Voltage to AGND . . . . –0.3 V to AV
DD
+ 0.3 V
Reference Input Voltage to AGND . . –0.3 V to AV
DD
+ 0.3 V
AIN/REF IN Current (Indefinite) . . . . . . . . . . . . . . . . . 30 mA
Digital Input Voltage to DGND . . . . –0.3 V to DV
DD
+ 0.3 V
Digital Output Voltage to DGND . . . –0.3 V to DV
DD
+ 0.3 V
Output Voltage (D0, D1) to DGND . . –0.3 V to AV
DD
+ 0.3 V
Operating T emperature Range
Industrial (B Version) . . . . . . . . . . . . . . . . –40
°
C to +85
°
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
T SSOP Package, Power Dissipation . . . . . . . . . . . . . 450 mW
θ
JA
T hermal Impedance . . . . . . . . . . . . . . . . . . . . . 128
°
C/W
Lead T emperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215
°
C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220
°
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 perma-
nent damage to the device. T his 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.
ORDE RING GUIDE
Model
T emperature Range
Package Description
Package Options
AD7731BN
AD7731BR
AD7731BRU
EVAL-AD7731EB
–40
°
C to +85
°
C
–40
°
C to +85
°
C
–40
°
C to +85
°
C
Evaluation Board
Plastic DIP
Small Outline
T hin Shrink Small Outline (T SSOP)
N-24
R-24
RU-24
TO OUTPUT
PIN
50pF
I
(800μA AT DV
DD
= +5V
100μA AT DV
DD
= +3V)
+1.6V
I
(200μA AT DV
DD
= +5V
100μA AT DV
DD
= +3V)
Figure 1. Load Circuit for Access Time and Bus Relinquish Time
WARNING!
ESD SENSITIVE DEVICE
CAUT 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 AD7731 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.
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