The ISL28148, ISL28248 are 4. 5MHz low-power single and dual operational amplifiers. The parts are optimized for single supply operation from 2. 4V to 5. 5V, allowing operation from one lithium cell or two Ni-Cd batteries. The single and dual 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 parts draw minimal supply current (900μA per amplifier) while meeting excellent DC accuracy, AC performance, noise and output drive specifications. The ISL28148 features an enable pin that can be used to turn the device off and reduce the supply current to a maximum of 16μA. Operation is guaranteed across the -40°C to +125°C temperature range.

Features

  • 4.5MHz gain bandwidth product
  • 900µA supply current (per amplifier)
  • 1.8mV maximum offset voltage (ISL28248)
  • 1pA typical input bias current
  • Down to 2.4V single supply operation
  • Rail-to-rail input and output
  • Enable pin (ISL28148 SOT-23 package only)
  • -40°C to +125°C operation
  • Pb-free (RoHS compliant)

Applications

  • Low-end audio
  • 4mA to 20mA current loops
  • Medical devices
  • Sensor amplifiers
  • ADC buffers
  • DAC output amplifiers

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOT23 Reel 3000
Availability
Active SOT23 Reel 250
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL28148, ISL28248 Datasheet Datasheet PDF 1.21 MB
User Guides & Manuals
ISL281x8EVAL1Z User Guide Manual PDF 407 KB
Application Notes & White Papers
How to Bias Op-Amps Correctly Application Note PDF 263 KB
AN1993: Voltage Feedback versus Current Feedback Operational Amplifiers Application Note PDF 564 KB
AN1613: From SPICE Netlist to Allegro Design Sub-Circuit Application Note PDF 1.02 MB
AN1560: Making Accurate Voltage Noise and Current Noise Measurements on Operational Amplifiers Down to 0.1Hz Application Note PDF 2.04 MB
AN1561: Radiated Interference in Audio Circuits Application Note PDF 556 KB
AN1556: Building an Accurate SPICE Model for Low Noise, Low Power Precision Amplifiers Application Note PDF 976 KB
AN1694: The Four Basic Building Blocks of an Op Amp Application Note PDF 357 KB
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
PCNs & PDNs
PCN16011 - Datasheet Specification Change for Listed Intersil ISL28148FHZ* Products Product Change Notice PDF 313 KB
PCN13022 - Alternate Manufacturing Site for Assembly of the Listed Intersil SOT23 Packaged Products - Carsem (CAM) Ipoh, Malaysia Product Change Notice PDF 557 KB
PCN12084 - Manufacturing Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 135 KB
Downloads
ISL28138, ISL28238, ISL28148, ISL28248 Macromodel Model TXT 2 KB
Other
TB514: Operational Amplifier Basics Other PDF 519 KB
General-purpose operational amplifiers and comparators Pamphlet Flyer PDF 1.11 MB

Boards & Kits

Part Number Title Type Company
ISL28148EVAL1Z Single Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps Evaluation Board Evaluation
ISL28158EVAL1Z Single Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps Evaluation Board Evaluation