1 Features

• Wide operating supply range: 4.5V to 48V

• Zero-drift precision:

– Input offset voltage: 5μV, max

– Input offset voltage drift: 0.025μV/°C, max

– High PSRR: 144dB, min

– High CMRR: 144dB, min

• Ac performance:

– Gain bandwidth: 5.6MHz

– Slew rate: 15V/μs

– Low noise: 9.2nV/√Hz

– Near zero flicker noise: 0.3μVPP

• Input to the negative rail, rail-to-rail output

• Low quiescent current: 650μA, max

• Temperature: –40°C to +125°C

2 Applications

• Battery backup unit (BBU)-12V DC/48V DC

• Common redundant power supply (CRPS)

• Analog input module

• Flow transmitter

• Pressure transmitter

• Merchant battery charger

• Weigh Scale

3 Description

The OPA486, OPA2486, and OPA4486 (OPAx486)

are a family of 48V, low noise, wide-bandwidth, low

power, zero-drift operational amplifiers (op amps). The

OPAx486 are a pin compatible replacement to many

industry standard amplifiers that can benefit from

higher operating voltage. The 48V operating voltage

and the 60V absolute maximum supply voltage rating

enable robust circuit designs.

These op amps feature a 5μV of input offset voltage

(max) and 0.025μV/°C of input offset voltage drift

(max) over a wide temperature range. The OPAx486

also provide common-mode and power supply

rejection to enable high precision measurements

under a variety of operating conditions.

These devices are designed for both dc and ac

applications with near-zero flicker noise, very low

broadband noise, wide bandwidth, and high slew.

The ac performance is achieved with relatively low

quiescent current of 650μA (max) to maintain system

power budget limits.

The combination of ac and dc performance make

the OPAx486 appropriate for a wide range of high

precision end equipment like analog input modules,

battery testers, precision instrumentation, and process

control. This family of devices are equipped with a

proprietary MUX-friendly input architecture to enhance

performance in multichannel, multiplexed applications.

The OPAx486 are available in industry standard

packages as well as micro-size packages to fit even

the most space-constrained applications. The devices

are specified for operation from –40°C to +125°C.