Overview
Description
Support is limited to customers who have already adopted these products.
The ISL28158 and ISL28258 are micro-power precision operational amplifiers optimized for single supply operation at 5. 5V and can operate down to 2. 4V. These devices feature an Input Range Enhancement Circuit (IREC), which enables them to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0. 25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The ISL28158 and ISL28258 draw minimal supply current while meeting excellent DC-accuracy noise and output drive specifications. Competing devices seriously degrade these parameters to achieve micro-power supply current. Offset current, voltage and current noise, slew rate, and gain bandwidth product are all two to ten times better than on previous micro-power op amps. The 1/f corner of the voltage noise spectrum is at 100Hz. This results in low frequency noise performance, which can only be found on devices with an order of magnitude higher supply current. ISL28158 and ISL28258 can be operated from one lithium cell or two Ni-Cd batteries. The input range includes both positive and negative rail. The output swings to both rails.
Features
- 34µA typical supply current (ISL28158)
- 68µA typical supply current (ISL28258)
- 300µV maximum offset voltage (8 Ld SOIC)
- 1pA typical input bias current
- 200kHz gain bandwidth product
- 2.4V to 5.5V single supply voltage range
- Rail-to-rail input and output
- Enable pin (ISL28158 only)
- Pb-free (RoHS compliant)
Comparison
Applications
Design & Development
Boards & Kits
Single Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps Evaluation Board
The ISL28148EVAL1Z evaluation board is a design platform containing all the circuitry needed to characterize critical performance parameters of the ISL28148 operational amplifiers, using a variety of user-defined test circuits.
The ISL28148 high-speed operational amplifier features low power...
Single Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps Evaluation Board
The ISL28158EVAL1Z evaluation board is a design platform containing all the circuitry needed to characterize critical performance parameters of the ISL28158 operational amplifiers, using a variety of user-defined test circuits.
The ISL28158 operational amplifier features ultra-low power...
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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