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Rad-hard 550MHz low noise Opamp
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The RHF350 device is a current feedback operational amplifier that uses very high-speed complementary technology to provide a bandwidth of up to 550 MHz while drawing only 4 mA of quiescent current. With a slew rate of 940 V/µs and an output stage optimized for driving a standard 100 Ω load, this circuit is highly suitable for applications where speed and power-saving are the main requirements. The device is a single operator available in a Flat-8S hermetic ceramic package, saving board space as well as providing excellent thermal and dynamic performance.

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Errata Sheet
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Key Features

  • Bandwidth: 550 MHz (unity gain)
  • Quiescent current 4 mA
  • Slew rate: 940 V/μs
  • Input noise: 1.5 nV/√ Hz
  • Distortion: SFDR = -66 dBc (10 MHz, 1 Vpp)
  • 2.8 Vpp minimum output swing on a 100 Ω load for a 5 V supply
  • Tested with 5 V power supply
  • ELDRS free up to 300 krad
  • SEL immune at 110 MEV.cm2/mg
  • SET characterized

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS6219: Rad-hard 550 MHz low noise operational amplifier
5.0 572 KB

Technical Notes & Articles

Description Version Size
TN1181: Engineering Model quality level
1.1 142 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
RHF350 beginning of life models (ADS, Eldo, PSpice)
1.0 5 KB

Related Tools and Software

Related Tools and Software

Part Number Description
EVAL-RHF350V1 RHF350 Evaluation board

Sample & Buy

Part Number SMD PIN/Detailed SpecQuality LevelEPPLHi-Rel PackageLead FinishPacking TypeOrder From STDistributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
RHF350K-01V5962F0723201VXCQML-V FlightFlat-8SGoldCarrier Tape-No availability reported, please contact our Sales officeNot compliant-
RHF350K1-Engineering ModelFlat-8SGoldCarrier Tape-Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
Not compliant-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.