ADS4245 datasheet(3/66 Pages) TI

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ADS42B49

www.ti.com

SBAS558B – DECEMBER 2012 – REVISED JANUARY 2013

ABSOLUTE MAXIMUM RATINGS

(1)

VALUE

MIN

MAX

UNIT

AVDD

–0.3

2.1

Supply voltage range

AVDD_BUF

–0.3

3.6

DRVDD

–0.3

2.1

AGND and DRGND

–0.3

0.3

AVDD to DRVDD

–2.4

2.4

(when AVDD leads DRVDD)

Voltage between:

DRVDD to AVDD

–2.4

2.4

(when DRVDD leads AVDD)

AVDD_BUF to DRVDD and AVDD

–3.9

3.9

Minimum

INP, INM

–0.3

(3, AVDD_BUF + 0.3)

Voltage applied to

CLKP, CLKM(2)

–0.3

AVDD + 0.3

RESET, SCLK, SDATA, SEN,

–0.3

3.9

CTRL1, CTRL2, CTRL3

Operating free-air, TA

–40

+85

°C

Temperature range

Operating junction, TJ

+125

°C

Storage, Tstg

–65

+150

°C

Electrostatic discharge (ESD) rating

Human body model (HBM)

(1)

Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may

degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond

those specified is not implied.

(2)

When AVDD is turned off, TI recommends switching off the input clock (or ensuring the voltage on CLKP, CLKM is less than |0.3 V|).

This configuration prevents the ESD protection diodes at the clock input pins from turning on.

THERMAL INFORMATION

ADS42B49

THERMAL METRIC(1)

RGC

UNIT

64 PINS

θJA

Junction-to-ambient thermal resistance

23.9

θJCtop

Junction-to-case (top) thermal resistance

10.9

θJB

Junction-to-board thermal resistance

4.3

°C/W

ψJT

Junction-to-top characterization parameter

0.1

ψJB

Junction-to-board characterization parameter

4.4

θJCbot

Junction-to-case (bottom) thermal resistance

0.6

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

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