My customer has the following requirement "The receiver response to spurious signals, including image response, shall be attenuated not less than 80 dB with respect to the received signal."
The specification for the ADRV9009 is 75db (QEC active within 200MHZ receiver bandwidth) for image rejection. Is it possible to achieve greater image rejection at lower bandwidths? Can we achieve spurious performance at this level?
Let me know,
The QEC levels do not vary much with bandwidth. We cannot guarantee performance across lot more than what is specified in datasheet.
You can use ADRV9009 Rx in Low IF mode, so that image falls out of band and can be filtered.
Please refer to UG-1295, Section GSM Use cases for more details. Where ADRV9009 is configured for 75 MHz low if mode to achieve better dynamic range.