TDA7021T FM integrated radio receiver circuit design

Subscribe by email

Using the TDA7021T integrated radio receiver circuit can be designed a very simple high efficiency portable radio receiver circuit fully compatible for applications using the low-voltage micro tuning system (MTS). The TDA7021T has a frequency locked loop (FLL) system with an intermediate frequency of 76 kHz. The selectivity is obtained by active RC filters. The only function to be tuned is the resonant frequency of the oscillator.
Because of the low intermediate frequency, low pass filtering of the MUX signal is required to avoid noise when receiving stereo. 50 kHz roll-off compensation is needed because of the low pass characteristic of the FLL.
For mono application this amplifier can be used to directly drive an earphone. The field-strength detector enables field-strength dependent channel separation control.
With a combination of a low voltage PLL stereo decoder ( TDA7040T ) and a low voltage mono/stereo power amplifier we can build a simple portable radio .
For this radio receiver circuit we need a 5V dc power supply .

Circuit Diagram: 
TDA7021T FM integrated radio receiver circuit design

Comments

Post new comment

The content of this field is kept private and will not be shown publicly.
CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Enter the characters shown in the image.

Circuit Diagram
20dB antenna amplifier circuit 20dB antenna amplifier circuit diagram

This 20dB antenna amplifier circuit is a very simple antenna amplifier circuit that use few...

Long wave radio and medium wave radio receiver using TBA120 Long wave radio and medium wave radio receiver using TBA120

Using electronic circuit diagram can b designed a very simple long wave radio and medium wave...

UHF amplifier circuit using transistor UHF amplifier circuit

This UHF amplifier circuit electronic project can be useful in situations where the TV signal is...