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Preamplifiers
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SR560 Voltage Preamplifier
  • 4 nV/√Hz input noise
  • 1 MHz bandwidth
  • Variable gain from 1 to 50,000
SR570 Current Preamplifier
  • 5 fA/√Hz input noise
  • 1 MHz maximum bandwidth
  • 1 pA/V maximum gain
SR445A 350 MHz Preamplifier
  • 6.4 nV/√Hz input noise
  • 4 independent channels
SR554 Transformer Preamplifier
  • 0.1 nV/√Hz input noise
  • 0.1 Hz to 40 kHz bandwidth
SR550 FET input Preamplifier
  • 3.6 nV/√Hz input noise
  • FET input, 100 MΩ input impedance
SR552 BJT input Preamplifier
  • 1.4 nV/√Hz input noise
  • BJT input, 100 kΩ input impedance
SR555 Current Preamplifier
  • 10 V/µA gain
  • 120 kHz (–3 dB) bandwidth
SR556 Current Preamplifier
  • 5 fA/√Hz input noise
  • 1 V/nA gain
SIM910/SIM911 Voltage Preamplifier
  • 1.8 nV/vHz input noise (SIM911)
  • 1 MHz bandwidth
SIM918 Current Preamplifier
  • gain of 106 to 108 V/A
  • Input offset voltage less than 10 µV

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