The HFA1135 is a High-Speed, low power current feedback amplifier build with Intersil's proprietary complementary bipolar UHF-1 process. This amplifier features user programmable output limiting, via the VH and VL pins. The HFA1135 is the ideal choice for High-Speed, low power applications requiring output limiting (e. g. flash A/D drivers), especially those requiring fast overdrive recovery times. The limiting function allows the designer to set the maximum and minimum output levels to protect downstream stages from damage or input saturation. The sub-nanosecond overdrive recovery time ensures a quick return to linear operation following an overdrive condition. Component and composite video systems also benefit from this operational amplifier's performance, as indicated by the gain flatness, and differential gain and phase specifications. The HFA1135 is a low power, high performance upgrade for the CLC501 and CLC502.


  • User Programmable Output Voltage Limiting
  • Fast Overdrive Recovery <1ns
  • Low Supply Current 6.8mA
  • High Input Impedance 2MΩ
  • Wide -3dB Bandwidth 360MHz
  • Very Fast Slew Rate 1200V/µs
  • Gain Flatness (to 50MHz) ±0.07dB
  • Differential Gain 0.02%
  • Differential Phase 0.04 Degrees
  • Pin Compatible Upgrade to CLC501 and CLC502
  • Pb-Free Plus Anneal Available (RoHS Compliant)


  • Flash A/D Drivers
  • High Resolution Monitors
  • Professional Video Processing
  • Video Digitizing Boards/Systems
  • Multimedia Systems
  • RGB Preamps
  • Medical Imaging
  • Hand Held and Miniaturized RF Equipment
  • Battery Powered Communications

Product Options

Part Number 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
HFA1135 Datasheet Datasheet PDF 884 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
AN9663: Converting From Voltage-Feedback to Current-Feedback Amplifiers Application Note PDF 405 KB
AN9653: Use and Application of Output Limiting Amplifiers (HFA1115, HFA1130, HFA1135) Application Note PDF 685 KB
AN9202: Using the HFA1100, HFA1130 Evaluation Fixture Application Note PDF 312 KB
AN9756: Properly Terminating Video Op Amps Application Note PDF 230 KB
AN9787: An Intuitive Approach To Understanding Current Feedback Amplifiers Application Note PDF 334 KB
AN9815: Crystal Filter Yields Pure Sine Waves Application Note PDF 211 KB
AN9757: A Cookbook Approach to Single Supply DC-Coupled Op Amp Design Application Note PDF 328 KB
AN9420: Current Feedback Amplifier Theory and Applications Application Note PDF 585 KB
AN9752: Sync Stripper and Sync Inserter for Composite Video (HFA1115, HFA1135) Application Note PDF 295 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
HFA1135 Macromodel Model TXT 5 KB
PIN19006 - Price Increase for the Listed Renesas Electronics America Products Price Increase Notice PDF 257 KB
TB514: Operational Amplifier Basics Other PDF 519 KB
PIN17006 - Q1 2017 Price Increase Price Increase Notice PDF 227 KB
General-purpose operational amplifiers and comparators Pamphlet ( D18268EJ2V0PF00 ) Flyer PDF 1.11 MB