AD7621ACPRL datasheet(8/33 Pages) AD

8 / 33 page

AD7621

Rev. 0 | Page 7 of 32

ABSOLUTE MAXIMUM RATINGS

Table 5.

Parameter

Rating

Analog Inputs/Outputs

IN+1, IN−, REF, REFBUFIN, TEMP,

INGND, REFGND to AGND

AVDD + 0.3 V to

AGND − 0.3 V

Ground Voltage Differences

AGND, DGND, OGND

±0.3 V

Supply Voltages

AVDD, DVDD

–0.3 V to +2.7 V

OVDD

–0.3 V to +3.8 V

AVDD to DVDD

±2.8 V

AVDD to OVDD

+2.8 V to −3.8 V

OVDD to DVDD2

≤ +0.3 V if DVDD < 2.3 V

Digital Inputs

−0.3 V to +5.5 V

PDREF, PDBUF3

±20 mA

Internal Power Dissipation4

700 mW

Internal Power Dissipation5

2.5 W

Junction Temperature

125°C

Storage Temperature Range

–65°C to +125°C

1 See the Analog Inputs section.

2 See the Power Supply section.

3 See the Voltage Reference Input section.

4 Specification is for the device in free air: 48-Lead LQFP; θJA = 91°C/W,

θJC = 30°C/W.

5 Specification is for the device in free air: 48-Lead LFCSP; θJA = 26°C/W.

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.

Charged devices and circuit boards can discharge

without detection. Although this product features

patented or proprietary protection circuitry, damage may

occur on devices subjected to high energy ESD.

Therefore, proper ESD precautions should be taken to

avoid performance degradation or loss of functionality.

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