XRM2-ADC-Q8/250 - IF/Baseband Signal Sampling



  • IF/Baseband Signal Sampling

Board Features

  • Quad 14-bit 250Msps ADCs
  • External Clock Input
  • Thermal monitoring of the ADCs
  • Alpha Data XRM2 I/O Module


The XRM-ADC-Q8/250 is an XRM2 I/O Module, providing four Analog to Digital converters with 14-bit resolution at sampling rates up to 250Msps.

Aimed at IF/Baseband Signal Sampling, the sampling clock can be sourced from either an external clock source or from a clock generated within the attached FPGA board. The Trigger I/O port is provided for use as a trigger input and general purpose signaling. An additional two ports are available for use as high-speed interconnect between boards for synchronisation.

The built-in thermal monitor allows the user to check the operating temperature of the ADC. Provided as part of the sample design is the functionality to read the temperature of the device, and software to monitor this and recalibrate the ADC if the thermal drift is sufficient. The software will also shut the ADC down if the device starts to go over the maximum operating temperature.

Board Format

Alpha Data XRM2 I/O Module

Environmental Specifications

Temperature Limits:

CodeCooling OptionOperating Temp.Storage Temp.
AC0Air Cooled Commercial0°C+55°C-40°C+85°C

Operating Humidity range:

Up to 95% (non-condensing)

EMC Conformity:

FCC 47CFR Part 2
EN55022:2010 Equipment ClassB

For more information on the operating conditions for the different cooling options go to: Alpha Data Environmental Specification Page.

Or read: Alpha Data Environment Specification (PDF).

I/O Interfaces

Interface TypeQtyDescription
ANALOG I/O (Front Panel)
ADC4Quad Analog to Digital Converters
Resolution: 14-bit
Max Clock Rate: 40MHz to 250Msps
Impedance: 50Ω
Levels: +10dBm (2.0 Vppk = ADC full scale)
Connector: SSMC
Note: exceeding the maximum signal limit may result in permanent degradation of converter performance.
DISCRETE I/O (Front Panel)
External clock input1External Clock Input
Max Clock Rate: 1500MHz
Impedance: 50Ω
Levels: -6dBm to +12 dBm (nominal 0 dBm)
Connector: SSMC
Note: Exceeding the maximum voltage limit may result in permanent degradation of converter
Trigger I/O1Trigger I/O
Impedance: 4k7Ω (DC Coupled)
Levels: +3V3 LVTTL
Connector: SSMC
Note: Exceeding the maximum voltage limit may result in permanent degradation of converter
DISCRETE I/O (PCB Connector)
Synchronisation I/O2Synchronisation I/O
Levels: 1V8 Logic (DC coupled)
Connector: U.FL - Limited Access in assembled system
User configurable as inputs or outputs, signals direct to FPGA pins (Vccfpio).
Note: signals on these connectors must be restricted to 1V8 logic otherwise damage may result.


Example UCF, HDL files and Application software are provided with the board.

Ordering Code


  • XRM2-ADC-Q8-250 Board
  • One Year Warranty
  • One Year Technical Support

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