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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 ADS model (.mod)
1.0 956 KB
RHF350 beginning of life Eldo model (.mod)
1.0 956 KB
RHF350 beginning of life PSpice model (.mod)
1.0 956 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: 2015-10-02
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.
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