NF SA-230F5/240F5/250F6/251F6 SA Series Ultra-Low-Noise Amplifier Japanese Circuit Design

Model：SA series, 9 models Country of Origin：Japan

Category：Ultra-Low Noise Preamplifier

Overview：

9 models, low noise ( SA-230F5 : input-referred noise voltage 0.25nV/√Hz noise figure 0.6dB)

Features

Specifications

Application Notes

Functions & Configuration


SA-240F5	CA5350

The SA series is a series of preamplifiers for detecting extremely weak signals. This series was developed with the goal of achieving low noise that has never been achieved before in preamplifiers.
Depending on the frequency band, input form, and input impedance, this series offers 9 models of preamplifiers to choose from. Dedicated power supplies and power supplies for driving sensors are also available.

Model	Frequency band	Input type	Input impedance	Voltage noise *	Current noise *	Noise figure	Voltage gain
SA-200F3	DC ∼	Single-ended ground	1kΩ/10kΩ	0.5nV/√ Hz	2.2pA/√ Hz	-	40dB
	800kHz		/100kΩ
SA-220F5	1kHz ∼		1MΩ	0.5nV/√ Hz	200fA/√ Hz	-	46dB
	80MHz
SA-230F5	1kHz ∼		50Ω	0.25nV/√ Hz	5.0pA/√ Hz	0.6dB	46dB
	100MHz
SA-240F5	DC ∼		1MΩ/10MΩ	1.2nV/√ Hz	5fA/√ Hz	-	40dB
	20MHz		/open
SA-250F6	100Hz ∼		50Ω	0.25nV/√ Hz	5pA/√ Hz	0.6dB	40dB
NEW	250MHz
SA-251F6	1kHz ∼		50Ω	0.25nV/√ Hz	8pA/√ Hz	0.9dB	40dB
NEW	500MHz
SA-410F3	DC ∼	Differential input	1kΩ/10kΩ	0.75nV/√ Hz	4.5pA/√ Hz	-	40dB
	1MHz		/100kΩ
SA-420F5	1kHz ∼		1MΩ	0.9nV/√ Hz	100fA/√ Hz	-	46dB
	70MHz
SA-421F5	30Hz ∼		1MΩ	0.5nV/√ Hz	100fA/√ Hz	-	46dB
	30MHz
SA-430F5	1kHz ∼		50Ω	0.35nV/√ Hz	7.0pA/√ Hz	1.10dB	46dB
	100MHz
SA-440F5	DC ∼		1MΩ/10MΩ	1.8nV/√ Hz	25fA/√ Hz	-	40dB
	20MHz		/open

* Typical value

It can be used for a wide variety of applications, including as a preamplifier for various sensors, and as a preamplifier used to improve the sensitivity of analytical instruments and measuring instruments or to reduce noise, etc.

Signal amplification for superconducting devices in quantum computers

MCT (Mercury Cadmium Tellurium) sensors for infrared detection

SQUID superconducting sensors for detecting weak magnetic fields

High-temperature superconducting Josephson devices for microwave detection

Electromagnetic wave sensors for MRI (Magnetic Resonance Imaging)

Photodetection elements such as photomultiplier tubes and phototransistors

Other fields requiring low noise and high-speed response, such as various sensors, elements, and analytical equipment

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NF SA-230F5/240F5/250F6/251F6 SA Series Ultra-Low-Noise Amplifier Japanese Circuit Design

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