AD7730LBR datasheet(46/52 Pages) AD

46 / 52 page

–46–

REV. A

Parameter

B Version

Units

Conditions/Comments

LOGIC INPUTS

Input Current

±10

µA max

All Inputs Except SCLK and MCLK IN

VINL, Input Low Voltage

0.8

V max

DVDD = +5 V

VINL, Input Low Voltage

0.4

V max

DVDD = +3 V

VINH, Input High Voltage

2.0

V min

SCLK Only (Schmitt Trigerred Input)

VT+

1.4/3

V min to V max

DVDD = +5 V

VT+

1/2.5

V min to V max

DVDD = +3 V

VT–

0.8/1.4

V min to V max

DVDD = +5 V

VT–

0.4/1.1

V min to V max

DVDD = +3 V

VT+ – VT–

0.4/0.8

V min to V max

DVDD = +5 V

VT+ – VT–

0.4/0.8

V min to V max

DVDD = +3 V

MCLK IN Only

VINL, Input Low Voltage

0.8

V max

DVDD = +5 V

VINL, Input Low Voltage

0.4

V max

DVDD = +3 V

VINH, Input High Voltage

3.5

V min

DVDD = +5 V

VINH, Input High Voltage

2.5

V min

DVDD = +3 V

LOGIC OUTPUTS (Including MCLK OUT)

VOL, Output Low Voltage

ISINK = 800 µA Except for MCLK OUT

14;

0.4

V max

VDD

15 = +5 V

VOL, Output Low Voltage

ISINK = 100

µA Except for MCLK OUT14;

0.4

V max

VDD

15 = +3 V

VOH, Output High Voltage

ISOURCE = 200 µA Except for MCLK OUT

14;

4.0

V min

VDD

15 = +5 V

VOH, Output High Voltage

ISOURCE = 100 µA Except for MCLK OUT

14;

VDD – 0.6 V

V min

VDD

15 = +3 V

Floating State Leakage Current

±10

µA max

Floating State Output Capacitance

pF typ

TRANSDUCER BURNOUT

AIN1(+) Current

–100

nA nom

AIN1(–) Current

100

nA nom

Initial Tolerance @ 25

°C

±10

% typ

Drift

0.1

°C typ

OFFSET (TARE) DAC

Resolution

Bit

LSB Size

2.3/2.6

mV min/mV max

2.5 mV Nominal with 5 V Reference (REF IN/2000)

DAC Drift

3.5

ppm/

°C max

DAC Drift vs. Time

4, 16

ppm/1000 Hours typ

Differential Linearity

–0.25/+0.75

LSB max

Guaranteed Monotonic

SYSTEM CALIBRATION

Positive Full-Scale Calibration Limit

1.05

× FS

V max

FS Is the Nominal Full-Scale Voltage

(10 mV, 20 mV, 40 mV or 80 mV)

Negative Full-Scale Calibration Limit

–1.05

× FS

V max

Offset Calibration Limit

–1.05

× FS

V max

Input Span

0.8

× FS

V min

2.1

× FS

V max

POWER REQUIREMENTS

Power Supply Voltages

AVDD – AGND Voltage

+4.75 to +5.25

V min to V max

DVDD Voltage

+2.7 to +5.25

V min to V max

With AGND = 0 V

Power Supply Currents

External MCLK. Digital I/Ps = 0 V or DVDD

AVDD Current (Normal Mode)

3.7

mA max

All Input Ranges Except 0 mV to +10 mV and

±10 mV,

Typically 2.7 mA

AVDD Current (Normal Mode)

5.5

mA max

Input Ranges of 0 mV to +10 mV and

±10 mV Only,

Typically 4 mA

DVDD Current (Normal Mode)

0.45

mA max

DVDD of 2.7 V to 3.3 V, Typically 0.3 mA

DVDD Current (Normal Mode)

mA max

DVDD of 4.75 V to 5.25 V, Typically 0.75 mA

AVDD + DVDD Current (Standby Mode)

µA max

Typically 13

µA. External MCLK IN = 0 V or DV

Power Dissipation

AVDD = DVDD = +5 V. Digital I/Ps = 0 V or DVDD

Normal Mode

23.5

mW max

All Input Ranges Except 0 mV to +10 mV and

±10 mV,

Typically 15 mW

32.5

mW max

Input Ranges of 0 mV to +10 mV and

±10 mV Only,

Typically 23.75 mW

Standby Mode

105

µW max

Typically 65

µW. External MCLK IN = 0 V or DV

AD7730/AD7730L

AD7730LBR Fiches technique(PDF) 46 Page - Analog Devices

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