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home > Products > Measurement Instruments > Lock-in Amplifier/Preamplifier > Preamplifier > SA-600 Series
Selection Guide

Small signal measurement instruments

Wideband current amplifier
SA-600 series

World's top level current-to-voltage converter with extremely low noise

  • Wide current range measurement (sub pico-Amp. to 1 μA)
  • Realize both high gain and wide bandwidth
  • Low current noise density (fA/√Hz order)
SA-200F3
Input current against frequency

SA-600 series:

Amplifies extremely small current such as pico-Amp.

変換利得


Realize both high gain and wide bandwidth

Achieves world's top level gain-bandwidth products. The SA-607F2 can amplify from DC to 20kHz with 10G (V/A) gain.

Gain against cut-off frequency

SA-600 series:

Achieves high gains and wide bandwidth.

変換利得
*June 16,2017

fA/√Hz(10-15) order of current noise density

Amplifies small current with extremely low noise.

Equivalent input noise current density against cut-off frequency

SA-600 series:

World's top level amplifier with low noise in the range of 1 kHz to 500 kHz.

電流雑音密度
*June 16,2017
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Pulse response

Output waveforms (square wave, LPF=THRU)

SA-604F2 [Input current: 100nAp-p]

SA-604F2 Zin=1kΩ, G=10M(V/A), 
DC to 500kHz, 45fA/√Hz
  • 10Hz 10Hz
  • 100Hz 100Hz
  • 1kHz 1kHz
  • 10k 10kHz
  • 100kHz100kHz
  • 1MHz1MHz

SA-605F2 [Input current: 10nAp-p]

SA-605F2 Zin=3kΩ, G=100M(V/A), 
DC to 250kHz, 15fA/√Hz
  • 10Hz10Hz
  • 100Hz100Hz
  • 1kHz1kHz
  • 10kHz10kHz
  • 100kHz100kHz
  • 1MHz1MHz

SA-606F2 [Input current: 1nAp-p]

SA-606F2 Zin=10kΩ, G=1G(V/A), 
DC to 100kHz, 6fA/√Hz
  • 10Hz10Hz
  • 100Hz100Hz
  • 1kHz1kHz
  • 100Hz10kHz
  • 100kHz100kHz
  • 1MHz1MHz

SA-607F2 [Input current: 0.1nAp-p]

SA-607F2 Zin=30kΩ, G=10G(V/A), 
DC to 20kHz, 2.5fA/√Hz
  • 10Hz10Hz
  • 100Hz100Hz
  • 1kHz1kHz
  • 1kHz10kHz
  • 100kHz100kHz
  • 1MHz1MHz

 Select a product with the current range that you want to measure.
 If you required multi input current range, we recommend CA5350 amplifier.

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Current amplifier performance comparison - measurement of small signals -

Compare the response characteristics of the pulse waveforms using 10G (V/A) amplifiers

 Input signals: ±1nA.

100Hz, 2ms/div 1kHz, 200μs/div 10kHz, 20μs/div
sa607f2
SA-607F2: NF corp.
100Hz 1kHz 10kHz

A社製品
Amplifiers:
A company

100kHz 1kHz 10kHz
B社製品
Amplifier:
C company
100Hz 1kHz 10kHz
CA5350
CA5350: NF corp.
100Hz 1kHz 10kHz

 Amplifiers of NF corp.:
  Realize precise measurement for high speed signals compared to the other amplifiers
  with the same gain.

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Current amplifier performance comparison
- Challenge to the signal detection limit -

Displays amplified 1 pA pulse wave signals on digital oscilloscope (number of averaging: 4096) using 10G (V/A) amplifiers

Current pulse width: 1ms Current pulse width: 100μs
SA-607
SA-607F2: NF corp.
1ms 100μs
A社製品
Amplifier:
A company
1ms 100μs
B社製品
Amplifier:
C company
1ms 100μs
CA5350
CA5350: NF corp.
1ms 100μs

 Amplifiers of NF corp.:
  Successful in detecting 1pA and 100 μs pulse signal.

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