Tv Tuner and TA2003 IC FM Mode not working

Discussion in 'Wireless & RF Design' started by Masood786, Dec 21, 2010.

  1. Masood786

    Thread Starter New Member

    Dec 16, 2010
    Hi All
    I connected TA/SA2003 IC in FM mode and connected 10.7Mhz components including Quad Coil, Ceramic Filter and LC tank for local oscillator(pin13 28.2mhz to produce 10.7 MHz 38.9-28.2=10.7Mhz) and connected Pin14 AM/FM switch to FM i.e Vcc. The input to Pin1 Rf_in is from TV Tuner which outputs 38.9 signal But unfortunately the chip is picking AM signal even from TV Cable signals and AM demodulation is occurring strangely as 10.7Mhz components are connected as mentioned above.
    Any help from any one in this regard or has anyone used TA/Sa2003 Chip.
    I have used circuit from the following site