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INA188

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SBOS632 – SEPTEMBER 2015

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Copyright © 2015, Texas Instruments Incorporated

(1)

Total VOS, referred-to-input = (VOSI) + (VOSO / G).

(2)

RTI = Referred-to-input.

(3)

300-hour life test at 150°C demonstrated randomly distributed variation of approximately 1

μV.

(4)

Does not include effects of external resistor RG.

6.6 Electrical Characteristics: VS = ±2 V to < ±4 V (VS = 4 V to < 8 V)

At TA = 25°C, RL = 10 kΩ, VREF = VS / 2, and G = 1, unless otherwise noted. Specifications not shown are identical to the

Electrical Characteristics table for VS = ±2 V to ±18 V (VS = 8 V to 36 V).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT(1)

VOSI

Input stage offset voltage

At RTI(2)

±25

±55

μV

At RTI, TA = –40°C to +125°C

±0.08

±0.2

μV/°C

VOSO

Output stage offset voltage

At RTI

±60

±170

μV

At RTI, TA = –40°C to +125°C

±0.2

±0.35

μV/°C

VOS

Offset voltage

At RTI

±25 ±60 / G

±55 ±170 /

G

μV

At RTI, TA = –40°C to +125°C

±0.2 ±0.35 / G

μV/°C

Long-term stability

1(3)

µV

Turn-on time to specified VOSI

See the Typical Characteristics

zid

Differential input impedance

100 || 6

G

Ω || pF

zic

Common-mode input impedance

100 || 9.5

VCM

Common-mode voltage range

VO = 0 V, the input signal common-mode range can

be calculated with this tool

(V–)

(V+) – 1.5

V

CMRR

Common-mode rejection ratio

G = 1, at dc to 60 Hz, VCM = (V–) + 1.0 V to

(V+) – 2.5 V

80

90

dB

G = 10, at dc to 60 Hz, VCM = (V–) + 1.0 V to

(V+) – 2.5 V

94

110

G = 100, at dc to 60 Hz, VCM = (V–) + 1.0 V to

(V+) – 2.5 V

102

120

G = 1000, at dc to 60 Hz, VCM = (V–) + 1.0 V to

(V+) – 2.5 V

102

120

INPUT BIAS CURRENT

IIB

Input bias current

±850

±2500

pA

TA = –40°C to +125°C

See Figure 10

pA/°C

IOS

Input offset current

±850

±2500

pA

TA = –40°C to +125°C

See Figure 11

pA/°C

INPUT VOLTAGE NOISE

eNI

Input voltage noise

f = 1 kHz, G = 100, RS = 0 Ω

12.5

nV/

√Hz

f = 0.1 Hz to 10 Hz, G = 100, RS = 0 Ω

0.25

μVPP

eNO

Output voltage noise

f = 1 kHz, G = 100, RS = 0 Ω

118

nV/

√Hz

f = 0.1 Hz to 10 Hz, G = 100, RS = 0 Ω

2.5

μVPP

iN

Input current noise

f = 1 kHz

430

fA/

√Hz

f = 0.1 Hz to 10 Hz

10

pAPP

GAIN

G

Gain equation

1 + (50 k

Ω / RG)

V/V

Gain range

1

1000

V/V

EG

Gain error

G = 1, (V–) + 0.5 V

≤ VO ≤ (V+) – 1.5 V

±0.007%

±0.05%

G = 10, (V–) + 0.5 V

≤ VO ≤ (V+) – 1.5 V

±0.07%

±0.2%

G = 100, (V–) + 0.5 V

≤ VO ≤ (V+) – 1.5 V

±0.07%

±0.2%

G = 1000, (V–) + 0.5 V

≤ VO ≤ (V+) – 1.5 V

±0.25%

±0.5%

Gain versus temperature

G = 1, TA = –40°C to +125°C

1

5

ppm/°C

G > 1(4), TA = –40°C to +125°C

15

50

Gain nonlinearity

G = 1, VO = (V–) + 0.5 V ≤ VO ≤ (V+) – 1.5 V

3

8

ppm