T-ST508-DST-001 Data Sheet Mar. 2014
General Description
The RL508 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 RL508 integrates the tuner function from antenna input to stereo audio output
for worldwide European, US, Japanese and China 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 audio engine, the RL508 is able to deliver optimum sound
quality under hostile channel conditions.
Features
Worldwide FM band support (64–108
MHz)
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
32.768 kHz, 12M, 24M, 13M, 26M, 19.2M,
38.4MHz reference clock
2-wire control interface
2.0 V to 3.6 V supply voltage
Integrated LDO regulator
SOP-8 package
Pb-free / RoHS compliant
Integrated crystal oscillator
Built in audio amp for 32ohm load
Applications
Headphones
MP3, MP4 players
Portable radios
PDA
Notebook PC
Gift
Reference
RL508 EVB Quick Start Guide
RL508 Programming Guide
RL508 EVB User’s Guide
Specifications subject to change without notice Confidential Proprietary
3
Rev0.1
RTC6218(RL508)
