AD7701(RevD) Просмотр технического описания (PDF) - Analog Devices
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AD7701 Datasheet PDF : 16 Pages
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AD7701
Parameter
A, S Versions2
B, T Versions2
Units
Test Conditions/Comments
POWER REQUIREMENTS8
Power Supply Voltages
Analog Positive Supply (AVDD)
Digital Positive Supply (DVDD)
Analog Negative Supply (AVSS)
Digital Negative Supply (DVSS)
Calibration Memory Retention
Power Supply Voltage
DC Power Supply Currents8
Analog Positive Supply (AIDD)
Digital Positive Supply (DIDD)
Analog Negative Supply (AISS)
Digital Negative Supply (DISS)
Power Supply Rejection9
Positive Supplies
Negative Supplies
Power Dissipation
Normal Operation
Standby Operation10
4.5/5.5
4.5/AVDD
–4.5/–5.5
–4.5/–5.5
2.0
3.2
1.5
3.2
0.1
70
75
40
20 (40 S Version)
4.5/5.5
4.5/AVDD
–4.5/–5.5
–4.5/–5.5
2.0
3.2
1.5
3.2
0.1
70
75
40
20 (40 T Version)
V min/V max
V min/V max
V min/V max
V min/V max
V min
mA max
mA max
mA max
mA max
Typically 2 mA
Typically 1 mA
Typically 2 mA
Typically 0.03 mA
dB typ
dB typ
mW max
µW max
SLEEP = Logic 1,
Typically 25 mW
SLEEP = Logic 0,
Typically 10 µW
NOTES
11The AIN pin presents a very high impedance dynamic load which varies with clock frequency.
12Temperature ranges are as follows: A, B Versions; –40°C to +85°C; S, T Versions; –55°C to +125°C.
13Apply after calibration at the temperature of interest. Full-scale error applies for both unipolar and bipolar input ranges.
14Total drift over the specified temperature range since calibration at power-up at +25 °C. This is guaranteed by design and/or characterization. Recalibration at any
temperature will remove these errors.
15In unipolar mode the offset can have a negative value (–VREF) such that the unipolar mode can mimic bipolar mode operation.
16The specifications for input overrange and for input span apply additional constraints on the offset calibration range.
17For 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 ± (VREF +0.1)
18All digital outputs unloaded. All digital inputs at 5 V CMOS levels.
19Applies in 0.1 Hz to 10 Hz bandwidth. PSRR at 60 Hz will exceed 120 dB due to the digital filter.
10CLKIN is stopped. All digital inputs are grounded.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS1
(TA = +25°C unless otherwise noted)
DVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
DVDD to AVDD . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
DVSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
AVSS 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 DVDD +0.3 V
Analog Input
Voltage to AGND . . . . . . . . AVSS – 0.3 V to AVDD + 0.3 V
Input Current to Any Pin Except Supplies2 . . . . . . . . ± 10 mA
Operating Temperature 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 Temperature Range . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . +300°C
Power Dissipation (Any Package) to +75°C . . . . . . . 450 mW
Derates above +75°C by . . . . . . . . . . . . . . . . . . . . 10 mW/°C
NOTES
1Stresses 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.
2Transient currents of up to 100 mA will not cause SCR latch-up.
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 this device 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
REV. D
–3–
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