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AD9121

Data Sheet

Rev. B | Page 8 of 60

ABSOLUTE MAXIMUM RATINGS

Table 6.

Parameter

Rating

AVDD33 to AVSS, EPAD, CVSS, DVSS

−0.3 V to +3.6 V

IOVDD to AVSS, EPAD, CVSS, DVSS

−0.3 V to +3.6 V

DVDD18, CVDD18 to AVSS, EPAD,

CVSS, DVSS

−0.3 V to +2.1 V

AVSS to EPAD, CVSS, DVSS

−0.3 V to +0.3 V

EPAD to AVSS, CVSS, DVSS

−0.3 V to +0.3 V

CVSS to AVSS, EPAD, DVSS

−0.3 V to +0.3 V

DVSS to AVSS, EPAD, CVSS

−0.3 V to +0.3 V

FSADJ, REFIO, IOUT1P, IOUT1N,

IOUT2P, IOUT2N to AVSS

−0.3 V to AVDD33 + 0.3 V

D[15:0]P, D[15:0]N, FRAMEP, FRAMEN,

DCIP, DCIN to EPAD, DVSS

−0.3 V to DVDD18 + 0.3 V

DACCLKP, DACCLKN, REFCLKP,

REFCLKN to CVSS

−0.3 V to CVDD18 + 0.3 V

RESET, IRQ, CS, SCLK, SDIO, SDO

to EPAD, DVSS

−0.3 V to IOVDD + 0.3 V

Junction Temperature

125°C

Storage Temperature Range

−65°C to +150°C

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.

THERMAL RESISTANCE

The exposed pad (EPAD) of the 72-lead LFCSP must be

soldered to the ground plane (AVSS). The EPAD provides an

electrical, thermal, and mechanical connection to the board.

Typical θJA, θJB, and θJC values are specified for a 4-layer board in

still air. Airflow increases heat dissipation, effectively reducing

θJA and θJB.

Table 7. Thermal Resistance

Package

θJA

θJB

θJC

Unit

Conditions

72-LeadLFCSP

20.7

10.9

1.1

°C/W

EPAD soldered

to ground plane

ESD CAUTION

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