AD6679 datasheet(18/81 Pages) AD

18 / 81 page

AD6679

Data Sheet

Rev. B | Page 18 of 81

ABSOLUTE MAXIMUM RATINGS

Table 6.

Parameter

Rating

Electrical

AVDD1 to AGND

1.32 V

AVDD2 to AGND

2.75 V

AVDD3 to AGND

3.63 V

DVDD to DGND

1.32 V

DRVDD to DRGND

1.32 V

SPIVDD to AGND

3.63 V

AGND to DRGND

−0.3 V to +0.3 V

VIN±x to AGND

3.2 V

SCLK, SDIO, CSB to AGND

−0.3 V to SPIVDD + 0.3 V

PDWN/STBY to AGND

−0.3 V to SPIVDD + 0.3 V

Environmental

Operating Temperature Range

−40°C to +85°C

Maximum Junction Temperature

+125°C

Storage Temperature Range

(Ambient)

−65°C to +150°C

Stresses at or above those listed under Absolute Maximum

Ratings may cause permanent damage to the product. This is a

stress rating only; functional operation of the product at these

or any other conditions above those indicated in the operational

section of this specification is not implied. Operation beyond

the maximum operating conditions for extended periods may

affect product reliability.

THERMAL CHARACTERISTICS

Typical θJA, ΨJB, and ΨJT are specified vs. the number of printed

circuit board (PCB) layers in different airflow velocities (in

m/sec). Airflow increases heat dissipation, effectively reducing

θJA and ΨJB. In addition, metal in direct contact with the package

leads from metal traces, through holes, ground, and power planes

reduces the θJA. Thermal performance for actual applications

requires careful inspection of the conditions in an application.

The use of appropriate thermal management techniques is recom-

mended to ensure that the maximum junction temperature does

not exceed the limits shown in Table 6.

Table 7. Thermal Resistance

PCB Type

Airflow Velocity

(m/sec)

θJA

ΨJT

ΨJB

Unit

JEDEC 2s2p

Board

0.0

27.01, 2

0.71, 3

7.31, 3

°C/W

Per JEDEC 51-7, plus JEDEC 51-5 2s2p test board.

Per JEDEC JESD51-2 (still air) or JEDEC JESD51-6 (moving air).

Per JEDEC JESD51-8 (still air).

ESD CAUTION

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