Characteristics and basic application circuit of TC9309F-006

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The monolithic C-MOS large-scale digital tuning integrated circuit TC9309F-006 is designed using quartz crystal frequency phase lock and microcomputer technology, enabling it to receive three bands: Frequency Modulation (FM), Amplitude Modulated Medium Wave (MW), and Long Wave (LW). This makes it suitable for broadcast reception across the globe. The IC integrates the control circuit, LCD drive circuit, and frequency-locked digital tuning circuit, offering a complete function set with excellent performance and a simplified peripheral design.

In circuit design, by simply setting up the peripheral pre-set circuit of the TC9309F-006—specifically connecting A2, A1, and A0 in the key scan circuit—it can adapt to broadcast reception in countries worldwide, as shown in the table below. The image presents the basic application circuit diagram of the IC.

Key Features of TC9309F-006:

• Tuning Function: Manual tuning (UP/DOWN), automatic tuning (search), and preset stations.
• Storage Function: Supports FM1/FM2 (up to 20 stations), MW (up to 10 stations), LW (up to 10 stations), random storage (up to 30 stations), and direct storage per band.
• Clock Function: 12-hour or 24-hour display (depending on region), and timer on/off function (once daily).
• Audio Control: Volume level control (with TC9176/77P), six-function input selection and sound output (using TC9164N), function display (via TC9174P), DC volume output, motor power control, equalizer control, and a 20dB mute function.
• Remote Control Function: 32-key remote control decoding, and external machine control (e.g., function selection and volume adjustment via TC9173P interface).
• Additional Features: Signal level display (S-meter), stereo/mono indication, priority clock display, automatic function switching, and memory storage capabilities.

This versatile IC is ideal for use in radios and other communication devices that require reliable and flexible signal reception across multiple regions and frequencies.