AD7294 datasheet(7/45 Pages) AD

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Preliminary Technical Data

AD7294

Rev. PrB | Page 7 of 45

ABSOLUTE MAXIMUM RATINGS

TA = 25°C, unless otherwise noted.1

Table 3.

Parameter

Rating

VPP to AGND

−0.3 V to +70 V

AVDD to AGND

−0.3 V to +7 V

V(+) to AGND

−0.3 V to +17 V

DVDD to DGND

−0.3 V to +7 V

Digital Inputs to DGND

−0.3 V to DVDD + 0.3 V

SDA/SCL to DGND

−0.3 V to + 7 V

Digital Outputs to DGND

−0.3 V to DVDD + 0.3 V

RS(+)/RS(−) to AGND

−0.3 V to VPP + 0.3 V

REFIN to AGND

−0.3 V to AVDD + 0.3 V

AGND to DGND

−0.3 V to +0.3 V

VOUTx to AGND

−0.3 V to AVDD + 0.3 V

Analog Inputs to AGND

−0.3 V to AVDD + 0.3 V

Operating Temperature Range

Commercial (B Version)

−40°C to +105°C

Storage Temperature Range

−65°C to +150°C

Junction Temperature (TJ Max)

150°C

LFCSP-56 Package

θJA Thermal Impedance

30°C/W

θJC Thermal Impedance

2.9°C/W

Reflow Soldering Peak Temperature

230°C

1 Transient currents of up to 100 mA do not cause SCR latch-up.

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on

the human body and test equipment and can discharge without detection. Although this product features

proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy

electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance

degradation or loss of functionality.

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