Features
◆ Worldwide FM band support (76–108 MHz)
◆ Digital low-IF tuner
◆ Digital frequency synthesizer
◆ On-chip VCO
◆ On-chip loop filter
◆ Autonomous search tuning
◆ Automatic frequency control (AFC)
◆ Automatic gain control (AGC)
◆ Signal strength measurement
◆ Programmable de-emphasis (50/75 μs
◆ Digital adaptive noise suppression
◆ Volume control
◆ Line-level analog output voltage
◆ 32.768 kHz reference clock
◆ 2-wire and 3-wire control interface
◆ 2.7V to 5.5 V supply voltage
◆ Integrated LDO regulator
◆ 4 x 4 mm2 24-pin QFN package
◆ Pb-free / RoHS compliant
◆ Integrated crystal oscillator Applications
◆ Cellular handsets
◆ MP3, MP4 players
◆ Portable radios
◆ PDA
◆ Notebook P
General Description
The RTC6802 is a single-chip broadcast FM stereo radio tuner with fully integrated building blocks as LNA, VCO with digital synthesizer, digital channel selection filter, digital FM demodulator and MPX decoder. The RTC6802 integrates the tuner function from antenna input to stereo audio output for worldwide European, US and Japanese FM bands. The FM tuner only requires a minimum amount of small and low cost external components to be a very attractive solution for portable devices. With a powerful low-IF digital audio engine, the RTC6802 is able to deliver optimum sound quality under hostile channel conditions.