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HIGH PERFORMANCE DISTRIBUTION AMPLIFIER, HPDA-100
FEATURES
• 80-120 MHz
• Unity gain
• Return loss -25 dB
• High isolation: 100 dB
• Low phase noise: -158 dBc/Hz @ 10 Hz
-174 dBc/Hz @ 10 kHz
• Low distortion: -45 dBc
• High output: +16 dBm
APPLICATIONS
• Atomic frequency standards
• Instrumentation
• Reference frequency distribution
• Time scales
DESCRIPTION
The HPDA-100RM is a high performance distribution and isolation amplifier that may contain up to three
distribution amplifier modules. Each module provides five unity gain outputs, 100 dB of channel-to-channel
isolation, and 110 dB of reverse isolation. The phase noise of the modules is exceptionally low, typically
–158 dBc/Hz @ 10 Hz and -174 dBc/Hz @ 10 kHz from the carrier. All the outputs are AC-coupled and the
grounds are DC-isolated to reduce the effects of ground loops. The input and outputs have a low VSWR to
minimize environmental effects on frequency distribution through long transmission lines. The HPDA-100RM is
available in a 1 U high 19” rack-mount enclosure. The power requirements are 100 - 240 VAC and optional
+12 to +36 VDC.
HPDA-100 SELECTION GUIDE
Product Name Number of
Inputs
Number of
Outputs
AC Voltage
Operation
DC Voltage
Operation
HPDA-100NM 1 5 √
HPDA-100RM-A 1 5 √
HPDA-100RM-B 3 15 √
HPDA-100RM-B1 1 10 √
HPDA-100RM-B2 2 10 √
HPDA-100RM-C 3 15 √ √
HPDA-100RM-D 3 15 √
Specifications vary per model number. Contact SDI for data sheets.
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