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ADRV9026 Typical ACLR Performanc

Hello,

My team is interested in understanding the typical ACLR performance for ADR9026 Quad Transceiver. In data sheet reports the performance for 20MHz LTE waveform at -12dBFs.

1) Is the -12dBFs the DAC I+Q setpoint, i.e. is it -15dBFs per I and per Q?

2) The ACLR is reported as -65dBc to -68dBc. Is that achieved with or without DPD? Also do these numbers include the contribution of Phase noise?

Regards

Ibrahim

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  • 1) Is the -12dBFs the DAC I+Q setpoint, i.e. is it -15dBFs per I and per Q?

    -12dBFS is DAC I+Q setpoint

    2) The ACLR is reported as -65dBc to -68dBc. Is that achieved with or without DPD? Also do these numbers include the contribution of Phase noise?

    It is without DPD as it is small signal level. Yes, including the contribution of phase noise.

  • Thanks Ramarao for the quick and concise answers. I have  follow up questions if that's ok:

    1) So just to confirm the DAC -12dBFs setpoint is for the envelope and in that case is the transceiver using one of your DACs with 10mA FS per phase?

    2) What is the envelope (I+Q) PAPR of the LTE waveform that was used to report the -65dBc ACLR?

Reply
  • Thanks Ramarao for the quick and concise answers. I have  follow up questions if that's ok:

    1) So just to confirm the DAC -12dBFs setpoint is for the envelope and in that case is the transceiver using one of your DACs with 10mA FS per phase?

    2) What is the envelope (I+Q) PAPR of the LTE waveform that was used to report the -65dBc ACLR?

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