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Preamplifier
SR555 Current preamplifier

SR555 ... from $1095
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SR555 Current Preamplifier

Front Panel

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SR555 Current Preamplifier

Rear Panel

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  • 10 V/A fixed gain
  • 120 kHz bandwidth
  • Bias voltage input
  • Powered by SRS lock-in amplifiers
  • Overview
    The SR555 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 SR555 minimizes noise and pickup before they permanently degrade the signal-to-noise ratio, reducing measurement time in noise-limited experiments.
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    SR555 Current Preamplifier

    The SR555 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 SR555 minimizes noise and pickup before they permanently degrade the signal-to-noise ratio, reducing measurement time in noise-limited experiments. Power is brought from the lock-in by a 9-pin cable. The SR555 can also be operated independently by applying the appropriate DC power.

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