Compact AM/FM receiver (applikator)

1-56 — elektor january 1982 0t applikator compact AM/FM receiver 1 ANTE 111. C5 Cfi • C 7- CO-C9-00,11-C ",TORO CV, U.," VARI•BLE CORK17011 The Elektor library receives many interesting application notes from component manufac- turers, some more interesting than others. While we do not make a practice of publishing complete data sheets, however, application or design notes can sometimes be very useful. Such is the case with the TDA 1220A from SGS-Ates. This IC forms the basis of a complete AM/FM receiver with many outstanding features. Current consumption is only 9 mA making it ideal for use as a portable receiver. The AM section of the TDA 1220A IC con- sists of a preamplifier, a mixer, an oscillator, an IF amplifier including an internal AGC and a push-pull detector. The FM section con- tains an IF amplifier, a limiter, a quadrature- detector and a VLF preamplifier. The circuit"s other advantages include low noise, high sensitivity, high stability and DC controlled AM/FM c...