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Unformatted text preview: R AMP A225 TEK ULTRA LOW NOISE: <280 electrons RMS
Model A225 is a high performance thin film hybrid charge sensitive
preamplifier and shaping amplifier developed especially for high
resolution systems employing solid state detectors, proportional
counters, photomultiplier tubes and other charge producing detectors
in the pulse height analysis or A/D mode of operation.
While these units were specifically designed for satellite instrumentation, the following unique characteristics make them equally useful for
space, laboratory and commercial applications: Features Applications • Operates from -55 to +125 ºC.
• Small size (14 pin hybrid DIP) allows
mounting close to the detector.
• Ultra low power (as low as 10 mW)
• Wide range single supply voltage
(+4 to +25 VDC)
• Pole-zero cancellation (internal)
• Two outputs available (timing pulse
and shaped unipolar)
• High reliability screening
• One year warranty •
Particle, x-ray, and gamma detection
Medical and nuclear electronics
Electro-optical systems TYPICAL APPLICATION
Gating Logic DETECTOR A225 Multichannel
or ADC Amptek High Reliability Screening
• Precap Visual: MIL-STD-883, Method 2017, low magnification, high magnification
Sealing: Welded, Hermetic Seal
Stamping: Date Code and Serial Number
Stabilization Bake: MIL-STD-883, Method 1008, Condition C. +150 °C, 24 hours minimum
Temperature Cycle: MIL-STD-883, Method 1010, Condition C. Min. T=-65 °C to +150 °C, 10 minutes each extreme, 5 minutes maximum transfer time
Centrifuge: MIL-STD-883, Method 2001, condition B. YI axis; 10,000 G’s
Electrical Test: As per Specifications
Burn-In Test: MIL-STD-883, Method 1015, 160 hours at +125 °C
Fine Leak Test: MIL-STD-883, Method 1014, Condition A. Rejection if leak rate in excess of 5x10-7 cc/sec.
Gross Leak Test: MIL-STD-883, Method 1014, Condition C. Perflourocarbon
Electrical Test: As per Specification
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- Fall '09