The TEA5767 is a single-chip electronically tuned FM stereo radio designed for low-voltage applications. Manufactured by Phillips, this component integrates IF selectivity and demodulation, making it a compact and efficient solution for FM radio reception. It is widely used in portable audio devices, mobile phones, and other consumer electronics where space and power efficiency are critical.
This circuit is an FM radio receiver with a TEA5767 tuner module controlled by an ESP32 microcontroller. The ESP32 reads the frequency input from a rotary potentiometer and displays the current frequency on an ILI9341 TFT display. The microcontroller adjusts the tuner frequency via I2C communication based on the potentiometer's position.
Open Project in Cirkit Designer
This circuit features a Nano 33 BLE microcontroller interfaced with a TM1637 4-digit 7-segment display for information output, powered by a 3.7V battery managed by a TP4056 charging module. The microcontroller communicates with the display to present data, while the TP4056 ensures the battery is charged safely and provides power to the system.
Open Project in Cirkit Designer
This circuit features an RTL8720DN microcontroller interfaced with a China ST7735S 160x128 TFT LCD display and four pushbuttons. The microcontroller reads the states of the pushbuttons and displays their statuses on the TFT LCD, providing a visual feedback system for button presses.
Open Project in Cirkit Designer
This circuit uses a Teensy 4.0 microcontroller to control a MAX7219 LED driver, which in turn drives three 7-segment displays. The microcontroller runs code to display numbers from 0 to 999 on the 7-segment displays, with the SN74AHCT125N buffer providing signal integrity and the necessary capacitors and resistors ensuring stable operation.
Open Project in Cirkit Designer| Parameter | Value |
|---|---|
| Supply Voltage | 2.5V to 5.5V |
| Operating Current | 12 mA (typical) |
| Frequency Range | 76 MHz to 108 MHz |
| Sensitivity | 2.0 µV (typical) |
| Signal-to-Noise Ratio | 60 dB (typical) |
| Stereo Separation | 30 dB (typical) |
| Audio Output Voltage | 75 mV (typical) |
| Package | SOP16 |
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | VCC | Power supply |
| 2 | GND | Ground |
| 3 | SDA | I2C data line |
| 4 | SCL | I2C clock line |
| 5 | MPXOUT | Multiplexed audio output |
| 6 | LOUT | Left audio output |
| 7 | ROUT | Right audio output |
| 8 | VREF | Reference voltage |
| 9 | VCO | Voltage-controlled oscillator |
| 10 | XTAL | Crystal oscillator input |
| 11 | NC | Not connected |
| 12 | NC | Not connected |
| 13 | NC | Not connected |
| 14 | NC | Not connected |
| 15 | NC | Not connected |
| 16 | NC | Not connected |
#include <Wire.h>
#define TEA5767_I2C_ADDRESS 0x60
void setup() {
Wire.begin(); // Initialize I2C communication
Serial.begin(9600); // Initialize serial communication
setFrequency(101.1); // Set frequency to 101.1 MHz
}
void loop() {
// Main loop does nothing
}
void setFrequency(float frequency) {
uint16_t frequencyB = (4 * (frequency * 1000000 + 225000)) / 32768;
byte frequencyH = frequencyB >> 8;
byte frequencyL = frequencyB & 0xFF;
Wire.beginTransmission(TEA5767_I2C_ADDRESS);
Wire.write(frequencyH); // Send high byte of frequency
Wire.write(frequencyL); // Send low byte of frequency
Wire.write(0xB0); // Set to stereo, mute off
Wire.write(0x10); // Set to high side LO injection
Wire.write(0x00); // No software mute, no search mode
Wire.write(0x00); // No software mute, no search mode
Wire.endTransmission();
}
By following this documentation, users should be able to effectively integrate and utilize the TEA5767 FM stereo radio module in their projects.