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SA-420F5 NF Corporation Differential Amplifier


The SA-420F5 is a Differential Amplifier from NF Corporation. Amplify RF and Microwave signals to measure, test, and design circuits. Applications include radio communications, cellphones, EMI testing, and much more.

Additional Features:

  • Frequency range: 1 kHz to 70 MHz
  • Input form: AC coupling, balanced differential input
  • Input impedance: 1MΩ ±5%(kHz)
  • CMRR: 55dB min. 1 kHz to 10 MHz
  • Input voltage noise density: 0.9nV/√Hz (100 kHz)
  • Input noise current density: 100fA/√Hz (1 kHz)
  • Max. output voltage: 2Vp-p min./50Ω (1 kHz to 20 MHz)
  • Output impedance: 50Ω ± 5% (100 kHz)
  • Voltage gain: 46 ± 0.5dB / 50Ω (1 kHz)


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  •  MCT (Mercury Cadmium Tellurium) sensor for infrared detection
  •  Squid sensor for micro-magnet detection
  •  High-temperature superconducting Josephson device for microwave detection
  •  Electromagnetic sensor for MRI systems
  •  Photodetector such as a photo-multiplier and photo-transistor
  •  Improving sensitivity of lock-in amplifiers

The SA-420F5 is a preamplifier for submicro-signal detection, which has been developed to assure noise reduction never before accomplished. The SA-420F5 is used to foster versatility as a sensor head amplifier or preamplifier for sensitivity improvement and noise reduction in analyzers and measurement instruments.

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