The TEA5767HN is a single-chip electronically tuned FM stereo radio for low-voltage applications with fully integrated Intermediate Frequency (IF) selectivity and demodulation. The radio is completely adjustment-free and only requires a minimum of small and low cost external components. The digital tuning is based on the conventional PLL concept. The power consumption of the tuner is low. The current is about 13mA and the supply voltage can be varied between 2.5 and 5V.
The radio can find its application in many areas especially portable applications as mobile phones, CD and MP3 players.
Features:
- High sensitivity due to integrated low-noise RF input amplifier
- 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
