Datasheet

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 DVDD
2
≤ +0.3 V if DVDD < 2.3 V
Digital Inputs −0.3 V to +5.5 V
PDREF, PDBUF
3
±20 mA
Internal Power Dissipation
4
700 mW
Internal Power Dissipation
5
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; θ
JA
= 91°C/W,
θ
JC
= 30°C/W.
5
Specification is for the device in free air: 48-Lead LFCSP; θ
JA
= 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.