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VT120 Fast Timing Preamplifier

ORTEC VT120 Fast Timing Preamplifier
  • For amplification of signals with very fast rise times from microchannel plates, photomultiplier tubes, and silicon detectors
  • ≤1 ns rise time
  • Output drives –5 V into 50 Ω
  • Compact preamplifier box for operation close to the signal source
  • ≤20 µV rms equivalent input noise
  • Gain of (A) 200, (B) –200, or (C) 20

The Model VT120 Fast-Timing Preamplifier is a high-performance, wide-bandwidth preamplifier designed for boosting very fast linear signals from microchannel plates, photomultipliers, electron multipliers, silicon detectors, and other detectors used in fast timing applications. The rise time on all versions is <1 ns with a 5-V output, enabling excellent timing resolution.
  • Literature +

  • More Information +

    The Model VT120 is a single-channel unit in a small preamplifier package. It is available with a gain of 200, noninverting (A version); a gain of 200, inverting (B version); or a gain of 20, noninverting (C version). BNC connectors are used for signal connections on the Model VT120. A cable is available (Model C-VT120) for connecting power between the Model VT120 and conventional preamplifier power outputs using Amphenol-type 17-80090 connectors.
  • Specifications +

    (10% gain tolerance on all versions):
    • A Version  200, noninverting.
    • B Version  200, inverting.
    • C Version  20, noninverting.
    Rise Time ≤1 ns.
    Noise ≤20 µV rms equivalent input noise.
    Bandwidth 10 to 350 MHz.
    Output Range 0 to –5 V with 50-Ω load.
    Input BNC connector; input impedance 50 Ω.
    Output BNC connector; 0 to –5 V output with a 50-Ω load. Output impedance ≤1 W, ac-coupled.

    Electrical and Mechanical
    Power Required
    +12 V, 50 mA (uses LEMO power connector that is compatible with accessory cable C-VT120).
    Weight Net  0.2 kg (0.4 lb).    Shipping  1.1 kg (2.4 lb).
    Dimensions Aluminum housing 5.8 X 5.1 X 1.6 cm (2.3 X 2.0 X 0.63 in.).

    C-VT120 cable assembly with connections between VT120 power input (LEMO) and Amphenol-type 17-80090 preamplifier power connectors that are compatible with other ORTEC NIM-standard modules.
  • Ordering Information +

    Model Description
    VT120A Fast-Timing Preamplfier (200 gain, noninverting)
    VT120B Fast-Timing Preamplfier (200 gain, inverting)
    Fast-Timing Preamplfier (20 gain, noninverting)
    Power Cable Assembly for VT120A/B/C (3-m length)

    Suggested Cable Accessories
    C-25-1/2 RG-58A/U 50-Ω Cable with two BNC male plugs, 6-in. length
    C-25-12 RG-58A/U 50-Ω Cable with two BNC male plugs, 12-ft. length