AD7739 datasheet(4/32 Pages) AD

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AD7739

Rev. 0 | Page 4 of 32

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

REFERENCE INPUTS

REFIN(+) to REFIN(–) Voltage1, 9

2.475

2.5

2.525

NOREF Trigger Voltage

0.5

NOREF Bit in Channel Status Register

REFIN(+), REFIN(–) Common-Mode/

Absolute Voltage1

AVDD

Reference Input DC Current10

400

µA

SYSTEM CALIBRATION1, 11

Full-Scale Calibration Limit

+1.05

× FS

Zero-Scale Calibration Limit

–1.05

× FS

Input Span

0.8

× FS

2.1

× FS

LOGIC INPUTS

Input Current

±1

µA

Input Current CS

±10

µA

CS = DVDD

–40

µA

CS = DGND, Internal Pull-Up Resistor

Input Capacitance

VT+1

1.4

DVDD = 5 V

VT–1

0.8

1.4

DVDD = 5 V

VT+ – VT–1

0.3

0.85

DVDD = 5 V

VT+1

0.95

DVDD = 3 V

VT– 1

0.4

1.1

DVDD = 3 V

VT+ – VT–1

0.3

0.85

DVDD = 3 V

MCLK IN ONLY

Input Current

±10

µA

Input Capacitance

VINL Input Low Voltage

0.8

DVDD = 5 V

VINH Input High Voltage

3.5

DVDD = 5 V

VINL Input Low Voltage

0.4

DVDD = 3 V

VINH Input High Voltage

2.5

DVDD = 3 V

LOGIC OUTPUTS12

VOL Output Low Voltage

0.4

ISINK = 800 µA, DVDD = 5 V

VOH Output High Voltage

4.0

ISOURCE = 200 µA, DVDD = 5 V

VOL Output Low Voltage

0.4

ISINK = 100 µA, DVDD = 3 V

VOH Output High Voltage

DVDD – 0.6

ISOURCE = 100 µA, DVDD = 3 V

Floating State Leakage Current

±1

µA

Floating State Leakage Capacitance

P0, P1 INPUTS/OUTPUTS

Levels Referenced to Analog Supplies

Input Current

±10

µA

VINL Input Low Voltage

0.8

AVDD = 5 V

VINH Input High Voltage

3.5

AVDD = 5 V

VOL Output Low Voltage

0.4

ISINK = 8 mA, AVDD = 5 V

VOH Output High Voltage

4.0

ISOURCE = 200 µA, AVDD = 5 V

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