AD7780 datasheet(4/16 Pages) AD

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AD7780

Rev. A | Page 4 of 16

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

LOGIC INPUTS

SCLK, FILTER, GAIN, PDRST2

Input Low Voltage, VINL

0.4

DVDD = 3 V

0.8

DVDD = 5 V

Input High Voltage, VINH

1.8

DVDD = 3 V

2.4

DVDD = 5 V

SCLK (Schmitt-Triggered Input)

Hysteresis

100

DVDD = 3 V

140

DVDD = 5 V

Input Currents

±2

μA

VIN = DVDD or GND

Input Capacitance

All digital inputs

LOGIC OUTPUT (DOUT/RDY)

Output High Voltage, VOH2

DVDD − 0.6

DVDD = 3 V, ISOURCE = 100 μA

DVDD = 5 V, ISOURCE = 200 μA

Output Low Voltage, VOL2

0.4

DVDD = 3 V, ISINK = 100 μA

0.4

DVDD = 5 V, ISINK = 1.6 mA

Floating-State Leakage Current

±2

μA

Floating-State Output Capacitance

Data Output Coding

Offset binary

POWER REQUIREMENTS3

Power Supply Voltage

AVDD to GND

2.7

5.25

DVDD to GND

2.7

5.25

Power Supply Currents

IDD Current

115

μA

Gain = 1, AVDD = 3 V

130

160

μA

Gain = 1, AVDD = 5 V

330

μA

Gain = 128, AVDD = 3 V

420

500

μA

Gain = 128, AVDD = 5 V

IDD (Power-Down/Reset Mode)

μA

1 Temperature range is −40°C to +105°C.

2 This specification is not production tested but is supported by characterization data at initial product release.

3 Digital inputs are equal to DVDD or GND.

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