ADS4128 datasheet(3/61 Pages) TI

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ADS4128

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SBAS578 – MAY 2012

ABSOLUTE MAXIMUM RATINGS

(1)

Over operating free-air temperature range, unless otherwise noted.

VALUE

UNIT

AVDD

–0.3 to 2.1

Supply voltage range

DRVDD

–0.3 to 2.1

Between AGND and DRGND

–0.3 to 0.3

Between AVDD to DRVDD (when

0 to 2.1

Voltage

AVDD leads DRVDD)

Between DRVDD to AVDD (when

0 to 2.1

DRVDD leads AVDD)

INP, INM

–0.3 to minimum (1.9, AVDD + 0.3)

Voltage applied to input pins

CLKP, CLKM(2), DFS, OE

–0.3 to AVDD + 0.3

RESET, SCLK, SDATA, SEN

–0.3 to 3.9

Operating free-air, TA

–40 to +85

°C

Temperature range

Operating junction, TJ

+125

°C

Storage, Tstg

–65 to +150

°C

Electrostatic discharge (ESD)

Human body model (HBM)

ratings

(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, it is recommended to switch off the input clock (or ensure the voltage on CLKP and CLKM is less than |0.3 V|.

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

THERMAL INFORMATION

ADS4128

THERMAL METRIC(1)

RGZ (QFN)

UNITS

48 PINS

θJA

Junction-to-ambient thermal resistance

27.9

θJCtop

Junction-to-case (top) thermal resistance

15.1

θJB

Junction-to-board thermal resistance

5.4

°C/W

ψJT

Junction-to-top characterization parameter

0.3

ψJB

Junction-to-board characterization parameter

5.4

θJCbot

Junction-to-case (bottom) thermal resistance

1.7

(1)

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

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