The HA-5127 monolithic operational amplifier features an unparalleled combination of precision DC and wideband High-Speed characteristics. Utilizing the Intersil D. I. technology and advanced processing techniques, this unique design unites low noise (3nV/√Hz) precision instrumentation performance with High-Speed (10V/µs) wideband capability. This amplifier's impressive list of features include low VOS (10µV), wide unity gain-bandwidth (8. 5MHz), high open loop gain (1800V/mV), and high CMRR (126dB). Additionally, this flexible device operates over a wide supply range (±5V to ±15V) while consuming only 140mW of power. Using the HA-5127 allows designers to minimize errors while maximizing speed and bandwidth. This device is ideally suited for low level transducer signal amplifier circuits. Other applications which can utilize the HA-5127's qualities include instrumentation amplifiers, pulse amplifiers, audio preamplifiers, and signal conditioning circuits. This device can easily be used as a design enhancement by directly replacing the 725, OP25, OP06, OP07, OP27 and OP37. For the military grade product, refer to the HA-5127/883 data sheet.


  • Slew Rate: 10V/µs
  • Unity Gain Bandwidth: 8.5MHz
  • Low Noise: 3nV/√Hz at 1kHz
  • Low VOS: 10µV
  • High CMRR: 126dB
  • High Gain: 1800V/mV
  • Pb-Free Available (RoHS Compliant)


  • High Speed Signal Conditioners
  • Wide Bandwidth Instrumentation Amplifiers
  • Low Level Transducer Amplifiers
  • Fast, Low Level Voltage Comparators
  • Highest Quality Audio Preamplifiers
  • Pulse/RF Amplifiers

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 980
Active SOICN Reel 2500

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
HA-5127, HA-5127A Datasheet Datasheet PDF 1.01 MB
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
AN1243: Getting Started with iSim and iSim:PE Application Note PDF 436 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
AN553: HA-5127, HA-5137, HA-5147, Ultra Low Noise Amplifiers Application Note PDF 564 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PCN11122 - Data Sheet Specification Change for Intersil Product HA9P5127-5Z* Product Change Notice PDF 114 KB
PCN11084 - Data Sheet Specification Change for Intersil Product HA9P5127-5* Product Change Notice PDF 79 KB
HA-5127 SPICE Macromodel Model MDL 1 KB
HA-5127 SPICE Macromodel Model PDF 948 KB
TB514: Operational Amplifier Basics Other PDF 519 KB
General-purpose operational amplifiers and comparators Pamphlet Flyer PDF 1.11 MB