AnsweredAssumed Answered

using ADL5350 for LF

Question asked by dsarria on Nov 19, 2012
Latest reply on Apr 24, 2015 by enewman

Hello, I'm developing a modem for underwater communications and I need to mix signals al low frequencies - around 150kHz


To carry out the project I have considering ADL5350 mixer because seems to work at LF. I have some doubts if it is the correct mixer for me because the typical applications for mixers are high frequencies (MHz). I would like to know if I have to take some considerations in order to use the ADL5350 for mixing at low frequencies (100-200kHz)?


I'm using a DDS (AD9833) and a filter to build the local oscillator, that will generate a 150kHz sinusoid (fOL = 150kHz)


The RF signal to transmit is composed by several carriers between 10kHz to 40kHz generated by a DAC with an integrated anti-alising filter. The question is: Can I connect directly this signal to the ADL5350 RF input? or I need to mach impedances? Are there other considerations to take at these frequencies?


Thank you in advance,

Kind regards