OPAx186 Precision, Rail-to-Rail Input and Output, 24-V, Zero-Drift

Operational Amplifiers

1 Features

• High precision:

– Offset drift: 0.01 μV/°C

– Low offset voltage: 1 μV

• Low quiescent current: 90 µA

• Excellent dynamic performance:

– Gain bandwidth: 750 kHz

– Slew rate: 0.35 V/µs

• Robust design:

– RFI/EMI filtered inputs

• Rail-to-rail input/output

• Supply range: 4.5 V to 24 V

• Temperature: –40°C to +125°C

2 Applications

• PC PSU and game console unit

• Merchant DC/DC

• Flow transmitter

• Pressure transmitter

• Merchant battery charger

• Electricity meter

3 Description

The OPA186, OPA2186, and OPA4186 (OPAx186)

are low-power, 24-V, rail-to-rail input and output, zero-

drift operational amplifiers (op amps). These op amps

feature only 10 µV of offset voltage (maximum) and

0.04 µV/°C of offset voltage drift over temperature

(maximum). These devices are a great choice for

precision instrumentation, signal measurement, and

active-filtering applications.

The low quiescent current consumption of 90 μA

makes the OPAx186 an excellent option for power-

sensitive applications, such as battery-powered

instrumentation and portable systems.

Moreover, the high common-mode architecture along

with low offset voltage allows for high-side current

shunt monitoring at the positive rail. These devices

also provide robust ESD protection during shipment,

handling, and assembly.

Device Information

PART NUMBER

CHANNELS

PACKAGE(1)

OPA186

Single

DBV (SOT-23, 5)

OPA2186

Dual

D (SOIC, 8)

DDF (SOT-23, 8)

OPA4186

Quad

D (SOIC, 14)

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

+

6 V to 24 V

0 V to 5 V

ADC

Microcontroller

Battery /

Power

Supply

OPAx186

RS

High-Side Current Shunt Monitor Application

Input Common-mode Voltage (V)

-12.5 -10

-7.5

-5

-2.5

0

2.5

5

7.5

10

12.5

-6

-5

-4

-3

-2

-1

0

1

2

3

4

VOS vs Input Common Mode Voltage

OPA186, OPA2186, OPA4186

SBOS968B – JUNE 2022 – REVISED DECEMBER 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.