OPA188_13 datasheet(5/33 Pages) TI

Part #	OPA188

Description	Precision, Low-Noise, Rail-to-Rail Output,36-V, Zero-Drift Operational Amplifiers

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Manufacturer	TI [Texas Instruments]

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OPA188

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SBOS642A – MARCH 2013 – REVISED MARCH 2013

ELECTRICAL CHARACTERISTICS:

Low-Voltage Operation, VS = ±2 V to < ±4 V (VS = +4 V to < +8 V)

At TA = +25°C, RL = 10 kΩ connected to VS / 2

(1), and V

CM = VOUT = VS / 2

(1), unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE

±6

±25

μV

VOS

Input offset voltage

TA = –40°C to +125°C

±0.03

±0.085

μV/°C

VS = 4 V to 36 V,

PSRR

Power-supply rejection ratio

0.075

0.3

μV/V

TA = –40°C to +125°C

Long-term stability(2)

4

μV

INPUT BIAS CURRENT

±160

±1400

pA

IB

Input bias current

TA = –40°C to +125°C

±8

nA

±320

±2800

pA

IOS

Input offset current

TA = –40°C to +125°C

±4

nA

NOISE

f = 0.1 Hz to 10 Hz

250

nVPP

en

Input voltage noise

f = 0.1 Hz to 10 Hz

40

nVrms

Input voltage noise density

f = 1 kHz

8.8

nV/

√Hz

in

Input current noise density

f = 1 kHz

7

fA/

√Hz

INPUT VOLTAGE RANGE

VCM

Common-mode voltage range

TA = –40°C to +125°C

V–

(V+) – 1.5

V

(V–) < VCM < (V+) – 1.5 V

106

114

dB

(V–) + 0.5 V < VCM < (V+) – 1.5 V,

114

120

dB

CMRR

Common-mode rejection ratio

VS = ±2 V

(V–) + 0.5 V < VCM < (V+) – 1.5 V,

110

120

dB

VS = ±2 V, TA = –40°C to +125°C

INPUT IMPEDANCE

ZID

Differential

100 || 6

M

Ω || pF

ZIC

Common-mode

6 || 9.5

1012

Ω || pF

OPEN-LOOP GAIN

(V–) + 0.5 V < VO < (V+) – 0.5 V,

110

120

dB

RL = 5 kΩ

AOL

Open-loop voltage gain

(V–) + 0.5 V < VO < (V+) – 0.5 V

120

130

dB

(V–) + 0.5 V < VO < (V+) – 0.5 V,

110

120

dB

TA = –40°C to +125°C

FREQUENCY RESPONSE

GBW

Gain-bandwidth product

2

MHz

SR

Slew rate

G = +1

0.8

V/

μs

tOR

Overload recovery time

VIN × G = VS

1

μs

THD+N

Total harmonic distortion + noise

1 kHz, G = 1, VOUT = 1 Vrms

0.0001%

(1)

VS / 2 = midsupply.

(2)

1000-hour life test at +125°C demonstrated randomly distributed variation in the range of measurement limits—approximately 4

μV.

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