Skip to content

5182 Current Preamplifier

5182 is our current preamplifier

Our lock-in amplifier software

  • Highlights +

    • Current Preamplifier
    • Low input impedance and low noise
    • DC to 1 MHz frequency response
    • Adjustable sensitivity
    • Battery or external DC power

  • Preamplifiers +

    Signal Recovery offers a line of voltage and current preamplifiers including low noise, wideband, and differential input.  All Signal Recovery’s preamplifiers are designed to work with Signal Recovery lock-in amplifiers or as stand-alone signal enhancing units.

    The 5182 is a Current Preamplifier.
    The 5184 is a Ultra Low-Noise Preamplifier for voltage.
  • Applications and Software +

    Applications and Software
    The model 5182 is a current-to-voltage preamplifier of low noise and low input impedance designed to amplify the extremely low currents encountered in such areas as photometry and semiconductor research. It has four standard sensitivity settings but in addition includes a special low-noise mode on the highest gain position for even better low current measurement capability. The unit features two outputs, allowing both the AC and DC components of the input signal to be independently monitored, so that, for example, in a PMT application the bias current can be measured separately from the signal current.

    It can be powered from its own internally housed batteries, an external low voltage supply (±15 V or ±18 V) or from the optional model PS0108 remote line power supply. This preamplifier can also be powered from most of our range of lock-in amplifiers. The model 5182 is ideally suited to amplifying signals from current sources such as electron multipliers, ion collectors, photomultipliers and photodiodes.

    The model 5182 and 5184 preamplifiers have an output impedance of 450 Ω which when connected to a 50 Ω load creates a convenient 10:1 signal attenuation.

    The preamplifiers can be controlled by Acquire software or SRInstComms.
  • Brochure and Manual +

  • Differentiated Specifications +

    DC coupled current to voltage amplifier with adjustable sensitivity and a maximum frequency response extending from DC to 1 MHz. Single-ended virtual ground input and single-ended DC and AC coupled outputs via BNC connectors

    Battery powered from internal alkaline batteries or external DC power supply.
    Modes Single-ended virtual ground
    Coupling DC
    Sensitivity Switch selectable (5 settings)
    AC Output 10-5, 108, 107, 108, 108low noise A/V
    DC Output 10-3, 104, 106, 107, 108A/V
    Accuracy ±2%
    Stability ±300 ppm/* C
    Impedance see Figure 1
    Max input w/o damage ±15 V DC or 10 V rms. AC @ 50 Hz
    Noise see Table 1
    Frequency Response
    (AC Output)
    lower limit 0.5 Hz upper limit depends on sensitivity setting, see Figure 2
    Max DC current at input see Table 1
    AC Output
    Max voltage swing
    Slow rate

    450 Ω
    >10 V pk-pk
    > 22 V/µs
    DC Output
    Max voltage swing

    10 kΩ
    >±9 V
    Current flowing into the input produces positive output voltage

    Four 9 V alkaline batteries provide approximately 15 hours of use

    ±15 V or ±18 V DC @ 25 mA
    110 V AC or 240 V AC via optional external model PS0108 power supply
    (excluding connectors)
    8.25" wide x 11" deep x 3.5" high (210 mm wide x 279 mm deep x 89 mm high)
    Weight 5.3 lbs. (2.4 kg) excluding optional power supply
  • Accessories +

  • Optional Software +