COMBOSMARTMETER datasheet(4/60 Pages) TI1

4 / 60 page

ADS131E04

ADS131E06

ADS131E08

SBAS561A – JUNE 2012 – REVISED APRIL 2013

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ELECTRICAL CHARACTERISTICS (continued)

Minimum and maximum specifications apply from –40°C to +105°C. Typical specifications are at +25°C. All specifications are

at DVDD = 1.8 V, AVDD = 3 V, AVSS = 0 V, VREF = 2.4 V, external fCLK = 2.048 MHz, data rate = 8 kSPS, and gain = 1,

unless otherwise noted.

ADS131E0x

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OPERATIONAL AMPLIFIER

Integrated noise

0.1 Hz to 250 Hz

µVRMS

Noise density

2 kHz

120

nV/

√Hz

GBP

Gain bandwidth product

50 k

Ω || 10-pF load

100

kHz

Slew rate

50 k

Ω || 10-pF load

0.25

V/µs

Load current

µA

THD

Total harmonic distortion

fIN = 100 Hz

AVSS +

AVDD –

CMIR

Common-mode input range

0.7

0.3

Quiescent power consumption

µA

INTERNAL REFERENCE

TA = +25°C, VREF = 2.4 V

2.394

2.4

2.406

Output voltage

TA = +25°C, VREF = 4 V

VREF accuracy

±0.2

Temperature drift

–40°C

≤ TA ≤ +105°C

ppm/°C

Start-up time

Settled to 0.2%

150

SYSTEM MONITORS

Analog

Supply reading

error

Digital

From power-up to DRDY low

150

Device wake up

STANDBY mode

31.25

µs

Voltage

TA = +25°C

145

Temperature

sensor reading

Coefficient

490

μV/°C

SELF-TEST SIGNAL

fCLK / 2

Signal frequency

See Register Map section for settings

fCLK / 2

±1

Signal voltage

See Register Map section for settings

±2

Accuracy

±2

CLOCK

Nominal frequency

2.048

MHz

Internal oscillator clock frequency

TA = +25°C

±0.5

–40°C

≤ TA ≤ +105°C

2.5

Internal oscillator start-up time

μs

Internal oscillator power

120

μW

consumption

CLKSEL pin = 0, AVDD = 3 V

1.7

2.048

2.25

MHz

External clock input frequency

CLKSEL pin = 0, AVDD = 5 V

0.7

2.048

2.25

MHz

DIGITAL INPUT AND OUTPUT (DVDD = 1.8 V to 3.6 V)

DVDD +

VIH

High

0.8 DVDD

Logic level,

0.1

input voltage

VIL

Low

–0.1

0.2 DVDD

VOH

High

IOH = –500 µA

0.9 DVDD

Logic level,

output voltage

VOL

Low

IOL = +500 µA

0.1 DVDD

IIN

Input current

0 V < VDigitalInput < DVDD

–10

+10

μA

POWER-SUPPLY REQUIREMENTS

AVDD

Analog supply

AVDD – AVSS

2.7

5.25

DVDD

Digital supply

1.8

3.6

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Product Folder Links: ADS131E04 ADS131E06 ADS131E08

COMBOSMARTMETER 数据表(PDF) 4 Page - Texas Instruments

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COMBOSMARTMETER 数据表(PDF) 4 Page - Texas Instruments

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