5.4 Electrical Characteristics

at TA = 25°C, VS = +5V, RL = 20kΩ connected to VS/2, VREF = 0V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT

VOS

Offset voltage (RTI)

INA122P, U

±100

±250

µV

INA122PA, UA

±150

±500

Offset voltage drift (RTI)

TA = –40°C to +85°C

INA122P, U

±1

±3

µV/

℃

INA122PA, UA

±1

±5

PSRR

Power-supply rejection ratio

(RTI)

VS = 2.2V to 36V

INA122P, U

10

30

µV/V

INA122PA, UA

10

100

VCM

Operating input range(1)

0

3.4

V

CMRR

Common-mode rejection

ratio (RTI)

VCM = 0V to 3.4V

INA122P, U

83

96

dB

INA122PA, UA

76

96

Differential impedance

100 || 3

GΩ || pF

Common-mode impedance

100 || 3

BIAS CURRENT

IB

Input bias current

VCM = VS / 2

INA122P, U

–10

–25

nA

INA122PA, UA

–10

–50

nA

IOS

Input offset current

VCM = VS / 2

INA122P, U

±1

±2

nA

INA122PA, UA

±1

±5

Input offset current drift

TA = –40°C to +85°C

INA122P, U

±40

pA/

℃

INA122PA, UA

±40

NOISE VOLTAGE

eNI

Voltage noise (RTI)

f = 10Hz

110

nV/√Hz

f = 100Hz

100

f = 1kHz

60

fB = 0.1Hz to 10Hz

2.7

µVPP

iNI

Current noise (RTI)

f = 1kHz

80

fA/√Hz

fB = 0.1Hz to 10Hz

2

pAPP

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INA122

SBOS069A – OCTOBER 1997 – REVISED DECEMBER 2024

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