AD7788ARM datasheet(5/20 Pages) AD

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AD7788/AD7789

Rev. B | Page 5 of 20

AD7788/AD7789

Table 3.

Parameter

AD7788A, AD7788B/AD7789B

Unit

Test Conditions/Comments

LOGIC INPUTS

All Inputs Except SCLK1

VINL, Input Low Voltage

0.8

V max

VDD = 5 V

0.4

V max

VDD = 3 V

VINH, Input High Voltage

2.0

V min

VDD = 3 V or 5 V

SCLK Only (Schmitt-Triggered Input)1

VT(+)

1.4/2

V min/V max

VDD = 5 V

VT(−)

0.8/1.4

V min/V max

VDD = 5 V

VT(+) − VT(−)

0.3/0.85

V min/V max

VDD = 5 V

VT(+)

0.9/2

V min/V max

VDD = 3 V

VT(−)

0.4/1.1

V min/V max

VDD = 3 V

VT(+) − VT(−)

0.3/0.85

V min/V max

VDD = 3 V

Input Currents

±1

μA max

VIN = VDD

Input Capacitance

pF typ

All digital inputs

LOGIC OUTPUTS

VOH, Output High Voltage1

VDD − 0.6

V min

VDD = 3 V, ISOURCE = 100 μA

VOL, Output Low Voltage1

0.4

V max

VDD = 3 V, ISINK = 100 μA

VOH, Output High Voltage1

V min

VDD = 5 V, ISOURCE = 200 μA

VOL, Output Low Voltage1

0.4

V max

VDD = 5 V, ISINK = 1.6 mA

Floating-State Leakage Current

±1

μA max

Floating-State Output Capacitance

pF typ

Data Output Coding

Offset binary

POWER REQUIREMENTS2

Power Supply Voltage

VDD − GND

2.5/5.25

V min/max

AD7789, AD7788 B grade

2.7/5.25

V min/max

AD7788 A grade

Power Supply Currents

IDD Current

μA max

65 μA typ, VDD = 3.6 V

μA max

73 μA typ, VDD = 5.25 V

IDD (Power-Down Mode)

μA max

1 Specification is not production tested but is supported by characterization data at initial product release.

2 Digital inputs equal to VDD or GND.

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