EMRFD Message Archive 9944
Message Date From Subject 9944 2014-04-23 22:31:31 Ashhar Farhan A new high level mixer the LT5551 Has anyone more news of this mixer ?- farhan 9946 2014-04-24 09:51:04 williamhiggs20 Re: A new high level mixer the LT5551 Looks good for use in its intended range, 300 MHz and up, and for portable, low battery voltage use. Its use below this range will be limited by the integral transformers (noted in the datasheet) which also explains the loss in gain shown on the charts.Over the years, I've been able to fudge a bit on the freq specs of various DC-coupled ICs, but when you have either internal capacitors or ferrites you probably can't get away with it.73,Bill, NT4C 9947 2014-04-24 10:06:33 Dana Myers Re: A new high level mixer the LT5551 9948 2014-04-24 10:12:17 Dana Myers Re: A new high level mixer the LT5551 9949 2014-04-25 07:21:00 jorschei Re: A new high level mixer the LT5551 Asher,
Indeed depend on the frequency range of the transformers.
I used the LT5517 I&Q demodulator chip in the KTH-SDR kits some time ago.
Can be used as a single IF mixer as well
Out end below of the 40 MHz spec's could be used down to 7 MHz and depending on the production batch we have use them down to 3.5 MHz if you have them from an goed production batch.
LINEAR have a nice range of Mixer to for HF up to UHF use. I like them.
73" Joris PE1KTH