Overview
Description
The ISL28291 is a tiny, dual, ultra-low noise, ultra-low distortion operational amplifier. It is fully specified to operate down to +3V single supply. This amplifier has outputs that swing rail-to-rail and an input common mode voltage that extends to ground (ground sensing). The device is unity gain stable with an input referred voltage noise of 1.7nV/√Hz. Both parts feature 0.00018% THD+N at 1kHz. The ISL28291 is available in the 8 Ld SOIC, 10 Ld 1.8mm x 1.4mm UTQFN and 10 Ld MSOP packages. All devices are guaranteed over -40 °C to +125 °C.
Features
- 1.7nV/√Hz input voltage noise at 1kHz
- 1kHz THD+N typical 0.00018% at 2VP-P VOUT
- Harmonic Distortion -76dBc, -70dBc, fo = 1MHz
- 61MHz -3dB bandwidth
- 630µV maximum offset voltage
- 3µA input bias current
- 100dB typical CMRR
- 3V to 5.5V single supply voltage range
- Rail-to-rail output
- Ground sensing
- Enable pin (not available in the 8 Ld SOIC package option)
- Pb-free (RoHS compliant)
Comparison
Applications
Design & Development
Boards & Kits
Dual Supply Ultra-Low Noise RRIO Op Amp Evaluation Board
The ISL28290EVAL1Z evaluation board is a design platform containing all the circuitry needed to characterize critical performance parameters of the ISL28290 dual op amp, using a variety of user-defined test circuits.
The ISL28290 amplifier is a dual high-speed operational amplifier featuring low...
Dual Supply Ultra-Low Noise RRIO Op Amp Evaluation Board
The ISL28291EVAL1Z evaluation board is a design platform containing all the circuitry needed to characterize critical performance parameters of the ISL28291 dual op amp, using a variety of user-defined test circuits.
The ISL28291 amplifier is a dual high-speed operational amplifier featuring low...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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