1 Features

• Low input voltage noise density:

4 nV/√Hz at 1 kHz

• Input voltage noise:

0.1 Hz to 10 Hz: 60 nVRMS

• Low input bias current: 1 pA

• Input offset voltage: 50 μV

• Input offset drift: 0.45 μV/°C

• MUX-friendly inputs

• Gain bandwidth: 45 MHz

• Slew rate: 150 V/μs

• 14-bit settling time: 120 ns

• Overload power limiter

• Wide supply voltage range: ±4 V to ±18 V

• Packages:

– 8-pin SOIC

– 8-pin HVSSOP (preview)

2 Applications

• Data acquisition (DAQ)

• Optical module

• Lab and field instrumentation

• Mixed module (AI,AO,DI,DO)

• Ultrasound scanner

3 Description

The OPA828 and OPA2828 (OPAx828) JFET input

operational amplifiers are the next generation

OPA627 and OPA827, combining high speed with

high dc precision and ac performance. These op

amps supply low offset voltage (50 μV), low drift over

temperature (0.45 μV/°C, typical), low bias current (1

pA, typical), and low noise (4 nV/√Hz, typical) with

only 60-nVRMS 0.1-Hz to 10-Hz noise. The OPAx828

operate over a wide supply-voltage range of ±4 V to

±18 V and a supply current of 5.5 mA/channel, typical.

AC characteristics, including a 45-MHz gain

bandwidth product (GBW), a slew rate of 150 V/μs,

and precision dc characteristics, make the OPAx828

excellent choices for a variety of systems.

These include high-speed and high-resolution dataacquisition

systems, such as 16-bit to 18-bit mixed

signal systems, transimpedance (I/V-conversion)

amplifiers, filters, precision ±10-V front ends, and

high-impedance sensor-interface applications.

The OPAx828 are available in an 8-pin SOIC

package and a thermally enhanced, 8-pin HVSSOP

PowerPAD™ integrated circuit package.