fm radio circuit

Posted on Feb 4, 2014

This extremely simple FM radio receiver circuit is made possible by the special purpose TDA7000 IC. It integrates nearly all the functions necessary to build an FM receiver needing only a few external capacitors and a tuning circuit. Using a simple active RC filter made of only a single inductor, a few resistors and a varicap, this FM receiver wil

fm radio circuit
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l pick up broadcast radio between about 88 and 108 MHz. The mono output signal can then be used to drive a set of high impedance headphones, or feed a power amplifier. Unfortunately, the TDA7000 went obsolete a few years ago. The original version is made by Signetics (now Philips) and is getting a bit hard to find these days. There are, however, other options. Philips makes the TDA7010T which is a surface mount version. The TDA7021T is also available which includes stereo capability. They are electrically similar but are only 16 pin chips so you`ll need to compare the datasheets to build the circuit.

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