參數(shù)資料
型號(hào): AD7701AR
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: LC2MOS 16-Bit A/D Converter
中文描述: 1-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO20
封裝: MS-013AC, SOIC-20
文件頁(yè)數(shù): 3/16頁(yè)
文件大小: 312K
代理商: AD7701AR
Parameter
A, S Versions
2
B, T Versions
2
Units
T est Conditions/Comments
POWER REQUIREMENT S
8
Power Supply Voltages
Analog Positive Supply (AV
DD
)
Digital Positive Supply (DV
DD
)
Analog Negative Supply (AV
SS
)
Digital Negative Supply (DV
SS
)
Calibration Memory Retention
Power Supply Voltage
DC Power Supply Currents
8
Analog Positive Supply (AI
DD
)
Digital Positive Supply (DI
DD
)
Analog Negative Supply (AI
SS
)
Digital Negative Supply (DI
SS
)
Power Supply Rejection
9
Positive Supplies
Negative Supplies
Power Dissipation
Normal Operation
4.5/5.5
4.5/AV
DD
–4.5/–5.5
–4.5/–5.5
4.5/5.5
4.5/AV
DD
–4.5/–5.5
–4.5/–5.5
V min/V max
V min/V max
V min/V max
V min/V max
2.0
2.0
V min
3.2
1.5
3.2
0.1
3.2
1.5
3.2
0.1
mA max
mA max
mA max
mA max
T ypically 2 mA
T ypically 1 mA
T ypically 2 mA
T ypically 0.03 mA
70
75
70
75
dB typ
dB typ
40
40
mW max
SLEEP
= Logic 1,
T ypically 25 mW
SLEEP
= Logic 0,
T ypically 10
μ
W
Standby Operation
10
20 (40 S Version)
20 (40 T Version)
μ
W max
NOT ES
1
1
T he A
IN
pin presents a very high impedance dynamic load which varies with clock frequency.
1
2
T emperature ranges are as follows: A, B Versions; –40
°
C to +85
°
C; S, T Versions; –55
°
C to +125
°
C.
1
3
Apply after calibration at the temperature of interest. Full-scale error applies for both unipolar and bipolar input ranges.
1
4
T otal drift over the specified temperature range since calibration at power-up at +25
°
C. T his is guaranteed by design and/or characterization. Recalibration at any
temperature will remove these errors.
1
5
In unipolar mode the offset can have a negative value (–V
REF
) such that the unipolar mode can mimic bipolar mode operation.
1
6
T he specifications for input overrange and for input span apply additional constraints on the offset calibration range.
1
7
For unipolar mode, input span is the difference between full scale and zero scale. For bipolar mode, input span is the difference between positive and negative
full-scale points. When using less than the maximum input span, the span range may be placed anywhere within the range of
±
(V
REF
+0.1)
1
8
All digital outputs unloaded. All digital inputs at 5 V CMOS levels.
1
9
Applies in 0.1 Hz to 10 Hz bandwidth. PSRR at 60 Hz will exceed 120 dB due to the digital filter.
10
CLK IN is stopped. All digital inputs are grounded.
Specifications subject to change without notice.
REV. D
–3–
AD7701
WARNING!
ESD SENSITIVE DEVICE
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 this device 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.
ABSOLUT E MAX IMUM RAT INGS
1
(T
A
= +25
°
C unless otherwise noted)
DV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
DV
DD
to AV
DD
. . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
DV
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
AV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
AV
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
Digital Input Voltage to DGND . . . . –0.3 V to DV
DD
+0.3 V
Analog Input
Voltage to
AGND . . . . . . . . AV
SS
– 0.3 V to AV
DD
+ 0.3 V
Input Current to Any Pin Except Supplies
2
. . . . . . . .
±
10 mA
Operating T emperature Range
Commercial Plastic (A, B Versions) . . . . . –40
°
C to +85
°
C
Industrial Cerdip (A, B Versions) . . . . . . . –40
°
C to +85
°
C
Extended Cerdip (S, T Versions) . . . . . . –55
°
C to +125
°
C
Storage T emperature Range . . . . . . . . . . . –65
°
C to +150
°
C
Lead T emperature (Soldering, 10 secs) . . . . . . . . . . . +300
°
C
Power Dissipation (Any Package) to +75
°
C . . . . . . . 450 mW
Derates above +75
°
C by . . . . . . . . . . . . . . . . . . . . 10 mW/
°
C
NOT ES
1
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.
2
T ransient currents of up to 100 mA will not cause SCR latch-up.
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