What components are required for this project?

The project uses the TEA5767 single-chip FM stereo radio and the PIC16F877A micro-controller.

Can the TEA5767 operate without an external discriminator?

No external discriminator is needed because the chip includes a fully integrated FM demodulator.

How does the oscillator function in this system?

The oscillator operates with a 32.768 kHz clock crystal, a 13 MHz crystal, or an externally applied 6.5 MHz reference frequency.

Does the TEA5767 support different FM bands?

Yes, it supports US/Europe bands from 87.5 MHz to 108 MHz and Japanese bands from 76 MHz to 91 MHz.

What communication buses are supported by the device?

The device supports I2C-bus and 3-wire bus modes, which are selectable via the BUSMODE pin.

Is there a feature to improve stereo sound quality?

Yes, it includes Signal dependent mono to stereo blend known as Stereo Noise Cancelling (SNC).

Can the soft mute feature be disabled?

Yes, soft mute along with SNC and HCC can be switched off via the bus.

Does the tuner require manual adjustment?

No, the device features an adjustment-free stereo decoder and an autonomous search tuning function.

FM radio using TEA5767 and PIC16F877A micro-controller

TEA5767 single-chip FM stereo radio. ---------------------------------------------------------------------------- * High sensitivity due to integrated...

By Ibrar Ayyub

PublishedSeptember 7, 2022

Summary of FM radio using TEA5767 and PIC16F877A micro-controller

The TEA5767 is a single-chip FM stereo radio IC featuring high sensitivity, integrated RF amplification, and internal IF selectivity. It supports US/Europe and Japanese FM bands with preset tuning for TV audio. Key features include an LC tuner oscillator, crystal reference frequency options (32.768 kHz or 13 MHz), and a PLL synthesizer. The chip offers I2C/3-wire bus control, soft mute, signal-dependent mono/stereo blending, and autonomous search tuning without external discriminators.

Parts used in the FM radio using TEA5767 and PIC16F877A micro-controller:

TEA5767 single-chip FM stereo radio
PIC16F877A micro-controller
Low-noise RF input amplifier
Fully integrated FM demodulator
Crystal reference frequency oscillator
Phase-locked loop (PLL) synthesizer

TEA5767 single-chip FM stereo radio.
----------------------------------------------------------------------------
* High sensitivity due to integrated low-noise RF input ampliﬁer
* FM mixer for conversion to IF of the US/Europe (87.5 MHz to 108 MHz) and Japanese
(76 MHz to 91 MHz) FM band
* Preset tuning to receive Japanese TV audio up to 108 MHz
* RF Automatic Gain Control (AGC) circuit
* LC tuner oscillator operating with low cost ﬁxed chip inductors
* FM IF selectivity performed internally

* No external discriminator needed due to fully integrated FM demodulator
* Crystal reference frequency oscillator; the oscillator operates with a 32.768 kHz clock
crystal or with a 13 MHz crystal and with an externally applied 6.5 MHz reference
frequency
* Phase-locked loop (PLL) synthesizer tuning system
* I2C-bus and 3-wire bus, selectable via pin BUSMODE
* 7-bit IF counter output via the bus
* 4-bit level information output via the bus
* Soft mute
* Signal dependent mono to stereo blend [Stereo Noise Cancelling (SNC)] * Signal dependent High Cut Control (HCC)
* Soft mute, SNC and HCC can be switched off via the bus
* Adjustment-free stereo decoder
* Autonomous search tuning function
* Standby mode
* Two software programmable ports
* Bus enable line to switch the bus input and output lines into 3-state mode

For more detail: FM radio using TEA5767 and PIC16F877A micro-controller

What components are required for this project?
The project uses the TEA5767 single-chip FM stereo radio and the PIC16F877A micro-controller.
Can the TEA5767 operate without an external discriminator?
No external discriminator is needed because the chip includes a fully integrated FM demodulator.
How does the oscillator function in this system?
The oscillator operates with a 32.768 kHz clock crystal, a 13 MHz crystal, or an externally applied 6.5 MHz reference frequency.
Does the TEA5767 support different FM bands?
Yes, it supports US/Europe bands from 87.5 MHz to 108 MHz and Japanese bands from 76 MHz to 91 MHz.
What communication buses are supported by the device?
The device supports I2C-bus and 3-wire bus modes, which are selectable via the BUSMODE pin.
Is there a feature to improve stereo sound quality?
Yes, it includes Signal dependent mono to stereo blend known as Stereo Noise Cancelling (SNC).
Can the soft mute feature be disabled?
Yes, soft mute along with SNC and HCC can be switched off via the bus.
Does the tuner require manual adjustment?
No, the device features an adjustment-free stereo decoder and an autonomous search tuning function.

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Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough...