OPA2191 datasheet(9/59 Pages) TI

9 / 59 page

6.8 Electrical Characteristics: VS = ±2.25 V to ±4 V (VS = 4.5 V to 8 V)

at TA = +25°C, VCM = VOUT = VS / 2, and RL = 10 kΩ connected to VS / 2 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE

VOS

Input offset voltage

VS = ±2.25 V,

VCM = (V+) – 3 V

±5

±25

µV

TA = 0°C to 85°C

±8

±75

TA = –40°C to +125°C

±10

±125

(V+) – 3.0 V < VCM < (V+) – 1.5 V

See Typical Characteristics

VS = ±3 V,

VCM = (V+) – 1.5 V

±10

±50

TA = 0°C to 85°C

±25

±150

TA = –40°C to +125°C

±50

±250

OPA4191 (RUM, PW), VS = ±3 V,

VCM = (V+) – 1.5 V

±10

±50

TA = –40°C to +85°C

±90

±475

TA = –40°C to +125°C

±150

±740

dVOS/dT

Input offset voltage drift

VS = ±2.25 V, VCM = (V+) – 3 V,

D and PW packages only

TA = 0°C to 85°C

±0.1

±0.8

µV/°C

TA = –40°C to +125°C

±0.15

±1.2

µV/°C

VS = ±2.25 V, VCM = (V+) – 3

V, RUM, DGK and DBV packages

only

TA = 0°C to 85°C

±0.1

±0.9

µV/°C

TA = –40°C to +125°C

±0.15

±1.3

VS = ±2.25 V, VCM = (V+) – 1.5 V

TA = –40°C to +125°C

±0.5

PSRR

Power-supply rejection

ratio

TA = –40°C to +125°C, VCM = VS / 2 – 0.75 V

±1

µV/V

INPUT BIAS CURRENT

Input bias current

±5

±20

TA = –40°C to +125°C

±9

IOS

Input offset current

±2

±20

TA = –40°C to +125°C

±2

NOISE

Input voltage noise

(V–) – 0.1 V < VCM < (V+) – 3 V

f = 0.1 Hz to 10 Hz

1.4

µVPP

(V+) – 1.5 V < VCM < (V+) + 0.1 V

f = 0.1 Hz to 10 Hz

Input voltage noise density

(V–) – 0.1 V < VCM < (V+) – 3 V

f = 100 Hz

nV/√Hz

f = 1 kHz

(V+) – 1.5 V < VCM < (V+) + 0.1 V

f = 100 Hz

f = 1 kHz

Input current noise density

f = 1 kHz

1.5

fA/√Hz

INPUT VOLTAGE

VCM

Common-mode voltage

range

(V–) – 0.1

(V+) + 0.1

CMRR

Common-mode rejection

ratio

VS = ±2.25 V,

(V–) – 0.1 V < VCM < (V+) – 3 V

110

VS = ±2.25 V,

(V–) < VCM < (V+) – 3 V

TA = –40°C to +125°C

104

VS = ±2.25 V,

(V+) – 1.5 V < VCM < (V+)

120

TA = –40°C to +125°C

100

(V+) – 3 V < VCM < (V+) – 1.5 V

See Typical Characteristics

INPUT IMPEDANCE

ZID

Differential

100 || 1.6

MΩ || pF

ZIC

Common-mode

1 || 6.4

1013Ω ||

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OPA191, OPA2191, OPA4191

SBOS701D – DECEMBER 2015 – REVISED AUGUST 2021

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