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OPA188

SBOS642C – MARCH 2013 – REVISED JANUARY 2020

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(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.

7.6

Electrical Characteristics: Low-Voltage Operation

at TA = 25°C, VS = ±2 V to < ±4 V (VS = 4 V to < 8 V), 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

VOS

Input offset voltage

±6

±25

μV

TA = –40°C to +125°C

±0.03

±0.085

μV/°C

PSRR

Power-supply rejection ratio

VS = 4 V to 36 V,

TA = –40°C to +125°C

0.075

0.3

μV/V

Long-term stability(2)

4

μV

INPUT BIAS CURRENT

IB

Input bias current

±160

±1400

pA

TA = –40°C to +125°C

±18

nA

IOS

Input offset current

±320

±2800

pA

TA = –40°C to +125°C

±6

nA

NOISE

en

Input voltage noise

f = 0.1 Hz to 10 Hz

250

nVPP

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

CMRR

Common-mode rejection ratio

(V–) < VCM < (V+) – 1.5 V

106

114

dB

(V–) + 0.5 V < VCM < (V+) – 1.5 V,

VS = ±2 V

114

120

dB

(V–) + 0.5 V < VCM < (V+) – 1.5 V,

VS = ±2 V, TA = –40°C to +125°C

110

120

dB

INPUT IMPEDANCE

ZID

Differential

100 || 6

MΩ || pF

ZIC

Common-mode

6 || 9.5

1012 Ω || pF

OPEN-LOOP GAIN

AOL

Open-loop voltage gain

(V–) + 0.5 V < VO < (V+) – 0.5 V,

RL = 5 kΩ

110

120

dB

(V–) + 0.5 V < VO < (V+) – 0.5 V

120

130

dB

(V–) + 0.5 V < VO < (V+) – 0.5 V,

TA = –40°C to +125°C

110

120

dB

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%

OUTPUT

Voltage output swing from rail

No load

6

15

mV

RL = 10 kΩ

220

250

mV

TA = –40°C to +125°C

310

350

mV

ISC

Short-circuit current

Sinking

–18

mA

Sourcing

16

mA

RO

Open-loop output resistance

f = 1 MHz, IO = 0

120

Ω

CLOAD

Capacitive load drive

1

nF

POWER SUPPLY

IQ

Quiescent current (per amplifier)

VS = ±2 V to VS = ±4 V

425

485

μA

IO = 0 mA, TA = –40°C to +125°C

575

μA