The CA3240A and CA3240 are dual versions of the popular CA3140 series integrated circuit operational amplifiers. They combine the advantages of MOS and bipolar transistors on the same monolithic chip. The gate-protected MOSFET (PMOS) input transistors provide high input impedance and a wide common-mode input voltage range (typically to 0. 5V below the negative supply rail). The bipolar output transistors allow a wide output voltage swing and provide a high output current capability. The CA3240A and CA3240 are compatible with the industry standard 1458 operational amplifiers in similar packages.


  • Dual Version of CA3140
  • Internally Compensated
  • MOSFET Input Stage
  • Very High Input Impedance (ZIN) 1.5TΩ (Typ)
  • Very Low Input Current (II) 10pA (Typ) at ±15V
  • Wide Common-Mode Input Voltage Range (VICR): Can Be Swung 0.5V Below Negative Supply Voltage Rail
  • Directly Replaces Industry Type 741 in Most Applications
  • Pb-Free Available (RoHS Compliant)


  • Ground Referenced Single Amplifiers in Automobile and Portable Instrumentation
  • Sample and Hold Amplifiers
  • Long Duration Timers/Multivibrators (Microseconds-Minutes-Hours)
  • Photocurrent Instrumentation
  • Intrusion Alarm System
  • Active Filters
  • Comparators
  • Function Generators
  • Instrumentation Amplifiers
  • Power Supplies


Title language Type Format File Size Date
Datasheets & Errata
star CA3240, CA3240A Datasheet Datasheet PDF 877 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
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
PCN12086 - Alternate Manufacturing Site for Assembly of the Listed Intersil PDIP Packaged Products -Amkor Technology, Philippines (ATP) Product Change Notice PDF 86 KB
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
TB514: Operational Amplifier Basics Other PDF 519 KB
General-purpose operational amplifiers and comparators Pamphlet ( D18268EJ2V0PF00 ) Flyer PDF 1.11 MB