ADS1113 datasheet(7/50 Pages) TI

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6.5 Electrical Characteristics

at VDD = 3.3 V, data rate = 8 SPS, and full-scale input voltage range (FSR) = ±2.048 V (unless otherwise noted); maximum

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG INPUT

Common-mode input impedance

FSR = ±6.144 V(1)

MΩ

FSR = ±4.096 V(1), FSR = ±2.048 V

FSR = ±1.024 V

FSR = ±0.512 V, FSR = ±0.256 V

100

kΩ

Differential input impedance

FSR = ±6.144 V(1)

MΩ

FSR = ±4.096 V(1)

FSR = ±2.048 V

4.9

FSR = ±1.024 V

2.4

FSR = ±0.512 V, ±0.256 V

710

kΩ

SYSTEM PERFORMANCE

Resolution (no missing codes)

Bits

Data rate

8, 16, 32, 64, 128, 250, 475, 860

SPS

Data rate variation

All data rates

–10%

10%

Output noise

See Noise Performance section

INL

Integral nonlinearity

DR = 8 SPS, FSR = ±2.048 V(2)

LSB

Offset error

FSR = ±2.048 V, differential inputs

–3

±1

LSB

FSR = ±2.048 V, single-ended inputs

±3

Offset drift over temperature

FSR = ±2.048 V

0.005

LSB/°C

Long-term Offset drift

FSR = ±2.048 V, TA = 125°C,

1000 hrs

±1

LSB

Offset power-supply rejection

FSR = ±2.048 V, DC supply variation

LSB/V

Offset channel match

Match between any two inputs

LSB

Gain error(3)

FSR = ±2.048 V, TA = 25°C

0.01%

0.15%

Gain drift over temperature(3)

FSR = ±0.256 V

ppm/°C

FSR = ±2.048 V

FSR = ±6.144 V(1)

Long-term gain drift(3)

FSR = ±2.048 V, TA = 125°C,

1000 hrs

±0.05

Gain power-supply rejection

ppm/V

Gain match(3)

Match between any two gains

0.02%

0.1%

Gain channel match

Match between any two inputs

0.05%

0.1%

CMRR

Common-mode rejection ratio

At DC, FSR = ±0.256 V

105

At DC, FSR = ±2.048 V

100

At DC, FSR = ±6.144 V(1)

fCM = 60 Hz, DR = 8 SPS

105

fCM = 50 Hz, DR = 8 SPS

105

DIGITAL INPUT/OUTPUT

VIH

High-level input voltage

0.7 VDD

5.5

VIL

Low-level input voltage

GND

0.3 VDD

VOL

Low-level output voltage

IOL = 3 mA

GND

0.15

0.4

Input leakage current

GND < VDIG < VDD

–10

µA

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ADS1113-Q1, ADS1114-Q1, ADS1115-Q1

SBAS563E – DECEMBER 2011 – REVISED DECEMBER 2022

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