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The XM655 balun add-on card uses the 8 x 50 x 2 female LPAM-50-01.0-L-08-2-K-TR connectors and pinout as defined in XM650/655 Connector Pinout. For signal break-out Carlisle CoreHC2 connectors and cable assemblies are used. Digital IO and I2C are supported on headers.
Following are the features of XM655 module:
- 16 ADC differential signals to 4 male Carlisle CoreHC2 connector pads
- 16 DACs differential signals to 4 male Carlisle CoreHC2 connector pads
- 2 ADC inputs – compression mount SMAs through low frequency baluns – Minicircuits TCM2-33WX+
- 2 ADC inputs – compression mount SMAs through mid frequency baluns – Anaren BD1631J50100AHF
- 2 ADC inputs – compression mount SMAs through high frequency baluns – Anaren BD3150N50100AHF
- 2 ADC inputs - compression mount SMAs through high freq baluns – Anaren BD4859N50100AHF
- 2 DAC outputs compression mount SMAs through low frequency baluns – Minicircuits TCM2-33WX+
- 2 DAC outputs compression mount SMAs through mid frequency baluns – Anaren BD1631J50100AHF
- 2 DAC outputs compression mount SMAs through high frequency baluns – Anaren BD3150N50100AHF
- 2 DAC outputs - compression mount SMAs through high freq baluns – Anaren BD4859N50100AHF
- 20 DACIO digital I/O pins on a header strip
- 20 ADCIO digital I/O pins on a header strip
- 12V, 5V0, 3V3, VCCADJ DAC, VCCADJ_ADC, DAV_AVTT, and GND, I2C signals access on a header strip.
The XM650 balun add-on card demonstrations DAC to ADC loopback with a 16T16R configuration of N79 baluns and filters. There is no external connectivity to the ADC or DAC signals. Digital IO and I2C are supported on headers.
Following are the features of XM650 module:
- 16 DAC outputs looped back to 16 ADC inputs
- 32 N79 baluns and filters on the card
- B46 or N77 band baluns can be supported with BOM change or re-work by customers.
- 20 DACIO digital I/O pins on a header strip
- 20 ADCIO digital I/O pins on a header strip