I am desiging a prototype receiver based on the TRF371109 direct conversion receiver/ IQ demodulator.
The datasheet lists pins 42 and 43 as NC's but the evaluation board has them both labeled as BBIinn and BBIinp, BBIinp has circuitry connected to it. Are these pins NC's or is there functionality associated with them that I need to be concerned with? The datasheet provides zero information.
What is the purpose of the MIXIOUTP/N and MIXQOUTP/N outputs? Are they only for testing?
There is no description of the CHIP_EN pin, is it active high or low?
Thanks
Rich