
HIGH PERFORMANCE DISTRIBUTION AMPLIFIER, HPDA-15RM
FEATURES
• 1-20 MHz
• Unity gain
• Low VSWR
• High isolation:
126 dB
• High output: +17 dBm
• Low phase noise: -150 dBc/Hz @ 1 Hz
-172 dBc/Hz @ 10 kHz
• Low distortion: -48 dBc
• Low temperature coefficient: 1.5 ps/ºC
APPLICATIONS
• Atomic frequency standards
• Atomic time scales
• Laboratory frequency distribution
• Reference frequency distribution
DESCRIPTION
The HPDA-15RM distribution amplifier exceeds the performance required to distribute state-of-the-art atomic
frequency standards. The HPDA-15RM offers 126 dB of channel-to-channel isolation and 135 dB of reverse
isolation. The exceptionally low phase noise -150 dBc/Hz at 1 Hz implies a short term frequency stability of 1
part in 10
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at 1 s. The HPDA-15RM exhibits a low temperature coefficient of phase of 3 ps/ºC throughout the
operating range. The input and outputs have a low VSWR to minimize environmental effects on frequency
distribution through long transmission lines. The HPDA-15RM is an enhanced version of the NIST high
isolation distribution amplifier.
SpectraDynamics, Inc. ● 1849 Cherry Street Unit 2, Louisville CO, 80027 ● Phone (303) 665 1852 ● Fax (303) 604 6088
www.spectradynamics.com
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