ADS1113

ADS1114

ADS1115

www.ti.com

SBAS444B – MAY 2009 – REVISED OCTOBER 2009

ELECTRICAL CHARACTERISTICS

All specifications at –40°C to +125°C, VDD = 3.3V, and Full-Scale (FS) = ±2.048V, unless otherwise noted.

Typical values are at +25°C.

ADS1113, ADS1114, ADS1115

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG INPUT

±4.096/PGA

V

Analog input voltage

GND

VDD

V

Differential input impedance

See Table 2

10

M

Ω

6

M

Ω

Common-mode input impedance

FS = ±1.024V

3

M

Ω

FS = ±0.512V, ±0.256V

100

M

Ω

SYSTEM PERFORMANCE

Resolution

No missing codes

16

Bits

8, 16, 32,

64, 128,

Data rate (DR)

SPS

250, 475,

860

Data rate variation

All data rates

–10

10

%

Output noise

Integral nonlinearity

1

LSB

FS = ±2.048V, differential inputs

±1

±3

LSB

Offset error

FS = ±2.048V, single-ended inputs

±3

LSB

Offset drift

FS = ±2.048V

0.005

LSB/°C

Offset power-supply rejection

FS = ±2.048V

1

LSB/V

FS = ±2.048V at 25°C

0.01

0.15

%

FS = ±0.256V

7

ppm/°C

FS = ±2.048V

5

40

ppm/°C

5

ppm/°C

Gain power-supply rejection

80

ppm/V

Match between any two PGA gains

0.02

0.1

%

Gain match

Match between any two inputs

0.05

0.1

%

Offset match

Match between any two inputs

3

LSB

At dc and FS = ±0.256V

105

dB

At dc and FS = ±2.048V

100

dB

Common-mode rejection

90

dB

105

dB

105

dB

DIGITAL INPUT/OUTPUT

Logic level

0.7VDD

5.5

V

GND – 0.5

0.3VDD

V

GND

0.15

0.4

V

Input leakage

10

μA

10

μA

(1)

This parameter expresses the full-scale range of the ADC scaling. In no event should more than VDD + 0.3V be applied to this device.

(2)

99% of full-scale.

(3)

Includes all errors from onboard PGA and reference.

Copyright © 2009, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Link(s): ADS1113 ADS1114 ADS1115