AD7701ARS datasheet(3/16 Pages) AD

3 / 16 page

Parameter

A, S Versions

B, T Versions

Units

Test Conditions/Comments

POWER REQUIREMENTS

Power Supply Voltages

Analog Positive Supply (AVDD)

4.5/5.5

V min/V max

Digital Positive Supply (DVDD)

4.5/AVDD

V min/V max

Analog Negative Supply (AVSS)

–4.5/–5.5

V min/V max

Digital Negative Supply (DVSS)

–4.5/–5.5

V min/V max

Calibration Memory Retention

Power Supply Voltage

2.0

V min

DC Power Supply Currents

Analog Positive Supply (AIDD)

3.2

mA max

Typically 2 mA

Digital Positive Supply (DIDD)

1.5

mA max

Typically 1 mA

Analog Negative Supply (AISS)

3.2

mA max

Typically 2 mA

Digital Negative Supply (DISS)

0.1

mA max

Typically 0.03 mA

Power Supply Rejection

Positive Supplies

dB typ

Negative Supplies

dB typ

Power Dissipation

Normal Operation

mW max

SLEEP

= Logic 1,

Typically 25 mW

Standby Operation

20 (40 S Version)

20 (40 T Version)

µW max

SLEEP

= Logic 0,

Typically 10

µW

NOTES

11The A

IN 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 (–V

REF) 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

±(V

REF +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.

REV. D

–3–

AD7701

WARNING!

ESD SENSITIVE DEVICE

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.

ABSOLUTE MAXIMUM RATINGS

(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 Supplies

2 . . . . . . . .

±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.

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