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


Post new comment

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

Circuit Diagram
Antenna selector circuit using PIN diodes Antenna selector circuit diagram using PIN diodes

This antenna selector circuit diagram is designed using common electronic components and is very...

MC2833 FM transmitter circuit
MC2833 FM transmitter circuit design components
MC2833 FM transmitter circuit

A very simple FM transmitter circuit can be designed using MC2833 integrated circuit, designed...

300m FM transmitter circuit design project 300m FM transmitter circuit design project

This fm transmitter circuit is very simple and it has a acceptable transmission . The signal...