• L1 and L2 wind 5 turns of 0.6 mm enameled Copper wire on a 4 mm dia plastic former.
IC TDA7000 Description
The IC has an FLL (Frequency-Locked-Loop) system with an intermediate frequency of 70 kHz. The i.f. selectivity is obtained by active RC filters. The only function which needs alignment is the resonant circuit for the oscillator, thus selecting the reception frequency. Spurious reception is avoided by means of a mute circuit, which also eliminates too noisy input signals. Special precautions are taken to meet the radiation requirements.
Data IC TDA7000
Supply voltage range: 2,7 to 10 V
Supply current : 8 mA
R.F. input frequency range: 1,5 to 110 MHz
Sensitivity for -3 dB limiting
• (e.m.f. voltage)
• (source impedance: 75 Ohm mute disabled) EMF: 1,5 uV
Signal handling (e.m.f. voltage)
• (source impedance: 75 Ohm) EMF typ. 200 mV
A.F. output voltage at RL = 22 kOhm75 Mv
Supply voltage: max. 12 V
Oscillator voltage: 0,5 to VP0,5 V
Storage temperature 55 to 150 C
Operating ambient temperature 0 to 60 C.