The HFA1105 is a High-Speed, low power current feedback amplifier built with Intersil's proprietary complementary bipolar UHF-1 process. This amplifier features an excellent combination of low power dissipation (58mW) and high performance. The slew rate, bandwidth, and low output impedance (0. 08Ω) make this amplifier a good choice for driving Flash ADCs. Component and composite video systems also benefit from this op amp's excellent gain flatness, and good differential gain and phase specifications. The HFA1105 is ideal for interfacing to Intersil's line of video crosspoint switches (HA4201, HA4600, HA4314, HA4404, HA4344), to create high performance, low power switchers and routers. The HFA1105 is a low power, high performance upgrade for the CLC406. For a comparable amplifier with output disable or output limiting functions, please see the data sheets for the HFA1145 and HFA1135 respectively. For Military grade product, please refer to the HFA1145/883 data sheet.


  • Low Supply Current 5.8mA
  • High Input Impedance 1MΩ
  • Wide -3dB Bandwidth 330MHz
  • Very Fast Slew Rate 1000V/µs
  • Gain Flatness (to 75MHz) ±0.1dB
  • Differential Gain 0.02%
  • Differential Phase 0.03 Degrees
  • Pin Compatible Upgrade for CLC406


  • Flash A/D Drivers
  • Video Switching and Routing
  • 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
HFA1105 Datasheet Datasheet PDF 730 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
AN9202: Using the HFA1100, HFA1130 Evaluation Fixture Application Note PDF 312 KB
AN9787: An Intuitive Approach To Understanding Current Feedback Amplifiers Application Note PDF 334 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
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 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