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Q1) which ADC is used on the radio board, AD 9238 or AD 9248? I can see both model number on pg. 3 of the schematics_radio_board_1.4.pdf.
Q2) What is the REF voltage for Rx I/Q ADC? 3.3V p-p?
Thanks.
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1) Your boards are built with AD9248-65 ADCs
2) The VREF voltage is set by resistors R17/R18; the circuit and a note explaining the choice of values is on pg. 3 of the schematics.
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Got it. Thanks! In fact, it depends on R17/R18 as well as the internel fixed reference, which is 0.5V.
Last edited by zrcao (2007-May-03 12:18:26)
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