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, zerodrift

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 powersensitive

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.