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Preamplifier
SR556 — Current preamplifier
SR556 ... from  $1095
Preamplifier
SR556 — Current preamplifier
SR556 ... from  $1095
SR556 ... from  $1095
 
BUY / QUOTE
BUY / QUOTE
  • 1 V/nA fixed gain
  • 5 fA/√Hz input noise
  • Bias voltage input
  • Powered by SRS lock-in amplifiers
  • 1 V/nA fixed gain
  • 5 fA/√Hz input noise
  • Bias voltage input
  • Powered by SRS lock-ins
  • 1 V/nA fixed gain
  • 5 fA/√Hz input noise
  • Bias voltage input
  • Powered by SRS lock-in amplifiers
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SR556 Current Preamplifier

Overview
The SR556 is a low-noise, high-bandwidth, fixed-gain current (trans-impedance) amplifier designed to work with SRS lockin amplifiers. Current amplifiers provide gain close to the experimental detector, allowing the user to minimize input cable length and its corresponding input capacitance. The SR556 minimizes noise and pickup before they permanently degrade the signal-to-noise ratio, reducing measurement time in noise-limited experiments.
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SR556 Current Preamplifier

Front Panel

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SR556 Current Preamplifier

SR556 Current Preamplifier

The SR556 is a low-noise, high-bandwidth, fixed-gain current (trans-impedance) amplifier designed to work with SRS lockin amplifiers. Current amplifiers provide gain close to the experimental detector, allowing the user to minimize input cable length and its corresponding input capacitance. The SR556 minimizes noise and pickup before they permanently degrade the signal-to-noise ratio, reducing measurement time in noise-limited experiments. The SR556 can also be operated independently by applying the appropriate DC power.