9305 Fast Preamplifier

• Used with photomultiplier tubes, electron multipliers, etc., in photon or ion counting applications
• Output of ±5 V into 50 W
• Input protection
• <3-ns rise and fall times
• DC-coupled, with excellent dc and gain stability
• Voltage gain adjustable from 5 to 10
• <5-ns overload recovery time

The ORTEC Model 9305 Fast Preamplifier contains a direct-coupled wideband hybridized amplifier suitable for use with photomultipliers, electron multipliers, and other detectors used in photon counting, ion counting, or fast-timing applications.

In addition to the fast rise time (<3 ns), Model 9305 has a variable voltage gain of 5–10 and can drive ±5 V into a 50-W load. The 9305 also features excellent dc and gain stability along with low noise and <5 ns overload recovery time. Overload input protection is provided also.

Hybrid circuit technology gives the Model 9305 high performance and reliability. For operator convenience independent bandwidth (BDW), output dc offset (DC), and fine gain (GAIN) adjustments are included.

Because of its compact size and light weight, the Model 9305 is ideal for mounting directly on or close to a detector. Consequently, low-level signals which would otherwise be susceptible to distortion by noise or interference are amplified to a suitable level for cable connection to the main amplifier. Connection to a power supply is through a 10-ft cable furnished with the Model 9305.

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