TEF6686 tuner DSP radio am Fm SW ESP32. Advanced Tuner software for NXP TEF668x tuners with ESP32 board Based on Catena / NXP semiconductors API. Take your radio experience to the next level with the TEF6686 tuner DSP radio with ESP32. Upgrade your radio experience with advanced tuner software for NXP TEF668x tuners and enjoy top-notch radio performance. Download the latest software release, buy the module, and immerse yourself in high-quality audio. Upgrade your radio experience today!
About TEF66xx
The TEF6686 and TEF6688 are high-performance Low IF Tuner chips from NXP Semiconductors, featuring AM/FM radio tuner capabilities and software-defined radio signal processing. These single-chip radio ICs are part of NXP’s established car radio tuner portfolio, offering top-notch radio performance and a wide range of advanced features with cutting-edge software algorithms, all at an optimized cost.
Both chips come in HVQFN packages that take up minimal PCB space, making them suitable for use in dual- and multi-layer PCBs. The radio receiver in these chips boasts a host of features, including FM/AM front-ends, tuning synthesizer, channel filtering, FM Channel Equalization, FM multipath improvement, demodulation, FM stereo decoding, weak signal processing, noise blanking, and RDS.
Additionally, these chips can output stereo audio in digital format through I²S and audio DAC outputs. The TEF6688 also supports digital radio standards like HD Radio and Digital Radio Mondiale (DRM) when paired with NXP Semiconductors’ digital radio coprocessors such as SAF356X and SAF360X.
Schematic TEF6686 tuner DSP radio am Fm SW ESP32
TEF DSP AM/FM tuner V2 update
- Frequency range: 65-108MHz and 144kHz-27MHz AM.
- Display: On the screen, the frequency, signal strength, and RDS information are displayed. Additionally, the frequency deviation and the bandwidth on which the signal is being received are also shown.
- Jumpers: There are two jumpers on the print: JP1: Open for flashing software, closed for use of XDR-GTK JP2: Choose the crystal frequency of the tuner can. If one doesn’t work, try the other setting.
- Analog signal meter: From software version 1.12, an analog signal meter (moving-coil meter) can also be connected to the receiver. Press and hold the standby button during startup, and the meter will indicate full scale. You can then adjust the endpoint of the meter using the 5k potentiometer. Below is the connection diagram:
Operation: The following buttons are available:
- BAND: Switch between AM and FM – PRESS AND HOLD BAND: Go to extended RDS mode
- BW: Switch between mono or auto stereo
- PRESS AND HOLD BW: Switch between different bandwidths (or automatic)
- MODE: Switch between manual tuning, auto search, memory channels, or close the menu
- PRESS AND HOLD MODE: Open the menu
- PRESS ROTARY: Switch between step size (10kHz/50kHz/100kHz/1000kHz) or operate the menu
- PRESS AND HOLD ROTARY: Turn on/off Channel equalizer and/or Multipad filter
- SQUELCH: Set squelch level (muting), if turned all the way to the right, stereo squelch is active.
PC operation
If you are going to use XDR-GTK, you need to place a jumper on JP1. It is also possible to control the tuner with the PC. For this, the XDR-GTK software can be used. In addition, RDS Spy and Station List are supported.
XDR-GTK, RDS Spy, and Station List can be used both via WiFi and via USB.
Download Gerber files, component list, schematic, etc.
Download last software release
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