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.