AD7722AS datasheet(3/24 Pages) AD

3 / 24 page

–3–

REV. 0

AD7722

A Version

Parameter

Test Conditions/Comments

Min

Typ

Max

Units

LOGIC INPUTS (Excluding CLKIN)

VINH, Input High Voltage

2.0

VINL, Input Low Voltage

0.8

CLOCK INPUT (CLKIN)

VINH, Input High Voltage

4.0

VINL, Input Low Voltage

0.4

ALL LOGIC INPUTS

IIN, Input Current

VIN = 0 V to DVDD

±10

µA

CIN, Input Capacitance

LOGIC OUTPUTS

VOH, Output High Voltage

|IOUT| = 200 µA

4.0

VOL, Output Low Voltage

|IOUT| = 1.6 mA

0.4

POWER SUPPLIES

AVDD, AVDD1

4.75

5.25

DVDD

4.75

5.25

IDD

Total from AVDD and DVDD

Power Consumption

375

NOTES

1Operating temperature range is as follows : A Version ; –40

°C to +85°C.

2Measurement Bandwidth = 0.5

× F

S; Input Level = –0.05 dB.

A = +25°C to +85°C/TA = TMIN to TMAX.

4Applies after calibration at temperature of interest.

5Gain Error excludes reference error. The ADC gain is calibrated w.r.t. the voltage on the REF2 pin.

Specifications subject to change without notice.

ABSOLUTE MAXIMUM RATINGS*

(TA = +25

°C unless otherwise noted)

DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V

AVDD, AVDD1 to AGND . . . . . . . . . . . . . . . . . . –0.3 V to 7 V

AVDD, AVDD1 to DVDD . . . . . . . . . . . . . . . . . . . –1 V to +1 V

AGND, AGND1 to DGND . . . . . . . . . . . . . –0.3 V to +0.3 V

Digital Inputs to DGND . . . . . . . . . . –0.3 V to DVDD + 0.3 V

Digital Outputs to DGND . . . . . . . . . –0.3 V to DVDD + 0.3 V

VIN(+), VIN(–) to AGND . . . . . . . . . . –0.3 V to AVDD + 0.3 V

REF1 to AGND . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V

REF2 to AGND . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V

DGND, AGND1, AGND2 . . . . . . . . . . . . . . . . . . . . .

±0.3 V

Operating Temperature Range . . . . . . . . . . . –40

°C to +85°C

Storage Temperature Range . . . . . . . . . . . . –65

°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150

°C

JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . 95

°C/W

Lead Temperature, 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. This is a stress rating only and functional

operation of the device at these or any other conditions above those indicated in the

operational section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

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 the AD7722 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.

ORDERING GUIDE

Model

Temperature

Package

AD7722AS

–40

°C to +85°C

44-Pin PQFP

S-44

IOL

1.6mA

IOH

200µA

+1.6V

50pF

OUTPUT

Figure 1. Load Circuit for Timing Specifications

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