Low Noise Preamplifier

SA series

SA series are preamplifiers for submicro-signal detection, which have been developed to assure noise reduction never before accomplished.
9 types of SA series amplifiers, which vary by a frequency, input form, and input impedance,
are available.

SA-200F3
Low Noise Amplifier

SA-220F5
Low Noise FET Amplifier

SA-230F5
Low Noise Amplifier

SA-200F3

SA-220F5

SA-230F5

SA-240F5
Low Noise FET Amplifier

SA-410F3
Low Noise Differential Amplifier

SA-420F5
Low Noise Differential FET Amplifier

SA-240F5

SA-410F3

SA-420F5

SA-421F5
Low Noise Differential FET Amplifier

SA-430F5
Low Noise Differential Amplifier

SA-440F5
Low Noise Differential FET Amplifier

SA-421F5

SA-430F5

SA-440F5
 
 
 
 

Frequency range

Input form

Input impedance

Voltage noise *

Current noise *

Noise figure *

Voltage gain

SA-200F3

DC to
800kHz

Single-ended

1kΩ/10kΩ
/100kΩ

0.5nV/√ Hz

2.2pA/√ Hz

-

40dB

SA-220F5

1kHz to
80MHz

1MΩ

0.5nV/√ Hz

200fA/√ Hz

-

46dB

SA-230F5

1kHz to
100MHz

50Ω

0.25nV/√ Hz

5.0pA/√ Hz

0.6dB

46dB

SA-240F5

DC to
20MHz

1MΩ/100MΩ
/open

1.2nV/√ Hz

5fA/√ Hz

-

40dB

SA-410F3

DC to
1MHz

Differential

1kΩ/10kΩ
/100kΩ

0.75nV/√ Hz

4.5pA/√ Hz

-

40dB

SA-420F5

1kHz to
70MHz

1MΩ

0.9nV/√ Hz

100fA/√ Hz

-

46dB

SA-421F5

30Hz to
30MHz

1MΩ

0.5nV/√ Hz

100fA/√ Hz

-

46dB

SA-430F5

1kHz to
100MHz

50Ω

0.35nV/√ Hz

7.0pA/√ Hz

1.10dB

46dB

SA-440F5

DC to
20MHz

1MΩ/100MΩ
/open

1.8nV/√ Hz

25fA/√ Hz

-

40dB

* typical value