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.