ADS131M08IPBSR datasheet(9/118 Pages) TI2

9 / 118 page

6.5 Electrical Characteristics (continued)

minimum and maximum specifications apply from TA = –40°C to +125°C; typical specifications are at TA = 25°C; all

specifications are at AVDD = 3 V, DVDD = 3 V, fCLKIN = 8.192 MHz, data rate = 4 kSPS, gain = 1, all channels enabled,

global-chop mode disabled, using internal reference with 100-nF tied to REFIN pin, and internal oscillator disabled (unless

otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SNR

Signal-to-noise ratio

fIN = 50 Hz or 60 Hz, gain = 1,

VIN = –0.5 dBFS, normalized

101

fIN = 50 Hz or 60 Hz, gain = 64,

VIN = –0.5 dBFS, normalized

THD

Total harmonic distortion

fIN = 50 Hz or 60 Hz (up to 50 harmonics),

VIN = –0.5 dBFS

–100

SFDR

Spurious-free dynamic

range

fIN = 50 Hz or 60 Hz (up to 50 harmonics),

VIN = –0.5 dBFS

103

INTERNAL VOLTAGE REFERENCE

VREF

Internal reference voltage

1.2

Accuracy

TA = 25°C

±0.1%

Temperature drift

20 ppm/°C

Long-term reference drift

1000 hours at 85°C, TQFP package

340

ppm

1000 hours at 85°C, WQFN package

DIGITAL INPUTS/OUTPUTS

VIL

Logic input level, low

DGND

0.2 DVDD

VIH

Logic input level, high

0.8 DVDD

DVDD

VOL

Logic output level, low

IOL = –1 mA

0.2 DVDD

VOH

Logic output level, high

IOH = 1 mA

0.8 DVDD

IIN

Input current

DGND < VDigital Input < DVDD

–1

µA

POWER SUPPLY

IAVDD

Analog supply current

High-resolution mode

6.5

7.7

Low-power mode

3.4

4.1

Very low-power mode

1.9

2.3

Current-detect mode

1.8

Standby mode

0.35

µA

IDVDD

Digital supply current(1)

High-resolution mode

0.66

0.9

Low-power mode

0.35

0.47

Very low-power mode

0.18

0.3

Current-detect mode

0.115

Standby mode

1.1

µA

Power dissipation

High-resolution mode

21.5

Low-power mode

11.3

Very low-power mode

6.2

Current-detect mode

5.8

Standby mode

4.4

µW

(1)

Currents measured with SPI idle and oscillator disabled.

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ADS131M08

SBAS950B – OCTOBER 2019 – REVISED FEBRUARY 2021

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