AD7192 datasheet(7/41 Pages) AD

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AD7192

Rev. A | Page 6 of 40

Parameter

AD7192B

Unit

Test Conditions/Comments1

SYSTEM CALIBRATION2

Full-Scale Calibration Limit

1.05 × FS

V max

Zero-Scale Calibration Limit

−1.05 × FS

V min

Input Span

0.8 × FS

V min

2.1 × FS

V max

POWER REQUIREMENTS7

Power Supply Voltage

AVDD − AGND

3/5.25

V min/max

DVDD − DGND

2.7/5.25

V min/max

Power Supply Currents

AIDD Current

0.6

mA max

0.53 mA typical, gain = 1, buffer off.

0.85

mA max

0.75 mA typical, gain = 1, buffer on.

3.2

mA max

2.5 mA typical, gain = 8, buffer off.

3.6

mA max

3 mA typical, gain = 8, buffer on.

4.5

mA max

3.5 mA typical, gain = 16 to 128, buffer off.

mA max

4 mA typical, gain = 16 to 128, buffer on.

DIDD Current

0.4

mA max

0.35 mA typical, DVDD = 3 V.

0.6

mA max

0.5 mA typical, DVDD = 5 V.

1.5

mA typ

External crystal used.

IDD (Power-Down Mode)

μA max

1 Temperature range: −40°C to +105°C.

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

3 FS is the decimal equivalent of Bit FS9 to Bit FS0 in the mode register.

4 Following a system or internal zero-scale calibration, the offset error is in the order of the noise for the programmed gain and output data rate selected. A system full-

scale calibration reduces the gain error to the order of the noise for the programmed gain and output data rate.

5 The analog inputs are configured for differential mode.

6 REJ60 is a bit in the mode register. When the output data rate is set to 50 Hz, setting REJ60 to 1 places a notch at 60 Hz, allowing simultaneous 50 Hz/60 Hz rejection.

7 Digital inputs equal to DVDD or DGND.

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