ADS131M08IPBSR datasheet(7/118 Pages) TI2

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6.3 Recommended Operating Conditions

over operating ambient temperature range (unless otherwise noted)

MIN

NOM

MAX

UNIT

POWER SUPPLY

Analog power supply

AVDD to AGND, normal operating modes

2.7

3.0

3.6

AVDD to AGND, standby and current-detect

modes

2.4

3.0

3.6

AGND to DGND

–0.3

0.3

Digital power supply

DVDD to DGND

2.7

3.0

3.6

DVDD to DGND, DVDD shorted to CAP

(digital LDO bypassed)

1.65

1.8

ANALOG INPUTS(1)

VAINxP,

VAINxN

Absolute input voltage

Gain = 1, 2, or 4

AGND – 1.3

AVDD

Gains = 8, 16, 32, 64 or 128

AGND – 1.3

AVDD – 1.8

VIN

Differential input voltage

Using internal reference, VIN = VAINxP - VAINxN –VREF / Gain

VREF / Gain

Using external reference, VIN = VAINxP - VAINxN

– 0.96 ×

VREF / Gain

0.96 ×

VREF / Gain

VOLTAGE REFERENCE INPUT

VREFIN

Reference input voltage

1.1

1.25

1.3

EXTERNAL CLOCK SOURCE

fCLKIN

External clock frequency

High-resolution mode, Gain = 1 or 2

0.3

8.192

8.4

MHz

High-resolution mode, Gain > 2

0.3

8.192

8.2

Low-power mode

0.3

4.096

4.15

Very-low-power mode

0.3

2.048

2.08

Duty cycle

DIGITAL INPUTS

Input voltage

DGND

DVDD

TEMPERATURE RANGE

Operating ambient temperature

–40

125

°C

(1)

The subscript "x" signifies the channel. For example, the positive analog input to channel 0 is named AIN0P. See the Pin

Configurations and Functions section for the pin names.

6.4 Thermal Information

THERMAL METRIC(1)

ADS131M08

UNIT

RSN (WQFN)

PBS (TQFP)

32 PINS

RθJA

Junction-to-ambient thermal resistance

33.7

81.9

°C/W

RθJC(top) Junction-to-case (top) thermal resistance

26.5

26.0

°C/W

RθJB

Junction-to-board thermal resistance

13.4

32.7

°C/W

ΨJT

Junction-to-top characterization parameter

0.3

1.1

°C/W

ΨJB

Junction-to-board characterization parameter

13.4

32.5

°C/W

RθJC(bot) Junction-to-case (bottom) thermal resistance

4.1

N/A

°C/W

(1)

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

report.

www.ti.com

ADS131M08

SBAS950B – OCTOBER 2019 – REVISED FEBRUARY 2021

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