Hello, world!

Are there analogs of the NJM2552 chip, but with two mixers (IF1 - ~ 10.7MHz, IF2 - 455MHz)?

Thank you for your attention and apologize for the poor knowledge of English (I use Google translator)

 

It will depend on what exactly you are doing. There are chips that have 2 IFs......but it matters what you are doing.

Edit: Try searching for "am fm ic chips", and see what you get.

 

I forgot to add - I work only with amplitude-modulated signals.

I make ANALOG (NOT DIGITAL) receiver in the range of 24-29 MHz. The desired selectivity in the image channel is achieved only with the help of two frequency conversions. For example, I receive a 25 MHz signal, the first IF is 10.7 MHz, and then the conversion to the second IF is done - 455 kHz.

I could not find the desired chip on the Mouser/Analog Devices and some others sites.

.

 

Hello,

I am not aware of double superhet chips.
The following article will tell you the difference between single and double conversion receivers:
https://www.electronics-notes.com/a...er/double-triple-dual-multiple-conversion.php

Bertus

 

Maybe something like this.......

https://www.amstzone.org/MC13030.pdf

 

Look at the data sheet for TA2003. Currently am into detecting AM from VHF. Seems the sections of that chip can be independently accessed.