Yet another CXA1191 FM radio receiver

This is simple, but very high-quality CXA1191S based FM radio receiver system. In this design, we use Sony CXA1191S as FM tuner and TDA2003 as an audio amplifier. This receiver system is designed to work with 12V DC power source and it delivers approximately 6W audio output power (with 4Ω speaker load).

The core component of this receiver system is CXA1191 FM radio IC, and for this design, we use 30 pin version of CXA1191 (which is known as CXA1191S) because it's commonly available in electronic component shops (and in eBay). Due to less availability of IF transformers we did not use any IF transformers in this design and only the FM section is used in the IC. (AM section of the IC is ignored due to unavailability of broadcasting stations in here in Sri Lanka)

A prototype version of CXA1191S FM radio receiver.

Compare with most of the FM radio ICs this CXA1191S receiver offer very good selectivity and higher sensitivity. After adjusting (all inductors and trimmers) we were able to get all FM stations from this receiver with 15cm wire antenna.

PCB is the most recommended way to construct this circuit. Given PCB design is 115mm × 61mm and all PCB and schematic diagrams are available to download at google drive.

Comments

Digital said…

Hello I can't open the files could you please help me out by giving me the downloads as a PDF File thanks in advance.

May 18, 2020 at 12:25 AM

CD2003 - yet another simple FM radio receiver

In the last few days, we are looking for some simple FM radio receiver to integrate into one of our ongoing projects. For that, we try several FM radio receiver ICs including TDA7000, CD2003/TA2003/TA8164, CXA1019, and KA22429. Out of all those chips we select CD2003 (or TA2003/TA8164) based receiver for our project because of its simplicity and outstanding performance. Except to CD2003, Sony CXA1019 also perform well but we drop it because of its higher component count. We design our receiver based on Toshiba TA2003 datasheet and later we try TA8164 and CD2003 with the same circuit. Either CD2003 or TA8164 can directly replace TA2003 IC, and as per our observations, TA8164 gives excellent results out of those 3 chips. A prototype version of CD2003 FM radio receiver The PCB design and schematic which we used in our prototype project are available to download at google drive (including pin-outs of crystal filters and inductors ). Except for CD2003 IC, this receiver consist

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