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Preamplifier
SIM914 — 350 MHz preamplifier
  • DC to 350 MHz bandwidth
  • Two independent amplifier channels
  • Voltage gain of 5 (14 dB) per channel
  • 6.4 nV/√Hz input noise
  • 3 ns overload recovery
  • Excellent phase linearity

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SIM914 Rear Panel


The SIM914 350 MHz Preamplifier contains two wide-bandwidth, DC-coupled amplifiers, each with a gain of 5 (14 dB). Its fast rise time, low noise and excellent DC accuracy make it an ideal instrument for amplifying signals like those from photomultiplier tubes and photodiodes.

The gain stages of several SIM914s can be cascaded without creating oscillation problems.  Input clamping gives a 3 ns recovery time from a 10× overload.

Wide bandwidth, along with and 50 Ω input and output impedance, ensures a linear phase response across the entire frequency range, preserving pulse shapes.

 

SIM900 Mainframe


Specifications  
Amplifier channels 2
Inputs 50 Ω, DC coupled
Outputs 50 Ω, DC coupled
Bandwidth DC to 350 MHz
Rise/fall time 1 ns
Voltage gain 5 per channel (14 dB)
Input noise 6.4 nV/√Hz (typ.)
Operating range
   Inputs
   Outputs
±200 mV
±1 V
Propagation delay 2.7 ns (typ.)
Recovery time 3 ns for 10× overload
Input protection ±50 V for <1 µs
Output clamp ±1.6 V
Output overload detect ±1.3 V
Crosstalk -60 dB
Operating temperature 0 °C to 40 °C, non-condensing
   
Connectors BNC (4 front)
DB15 (male) SIM interface
Power Power supplied by the SIM900 Mainframe, or optionally by a user-provided DC power supply (+5 V)
Dimensions 1.5" × 3.6"× 7.0" (WHL)
Weight 1.4 lbs.
Warranty One year parts and labor on defects in materials and workmanship



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