'Application' related articles 1

  1. 2006/08/01 TEA5768HL - Low-Power FM Stereo Radio for Handheld Applications
GENERAL DESCRIPTION
The TEA5768HL is a single-chip electronically tuned FM stereo radio for low-voltage applications with fully integrated IF selectivity and demodulation. The radio is completely adjustment-free and only requires a minimum of small and low cost external components. The radio can be tuned to the European, US and Japanese FM bands.

FEATURES
· 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
· PLL synthesizer tuning system
· I2C-bus
· 7-bit IF counter output via the I2C-bus
· 4-bit level information output via the I2C-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 I2C-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

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