| Portable Media |
| Digital Media |
| STMP3500 |
| STMP3600 |
| STMP3700 |
| Wireless |
| FM Tuner |
| GPS |
| STMP3738 |
| Consumer Audio |
| TV Audio |
| SGTV5800 |
| SGTV5900 |
| Multi-Function Printers |
| Inkjet All-in-Ones |
| STDC1100 |
| STDC2150 |
| Laser Multi-Function Printers |
| STDC3000 |
| Digital Imaging |
| Digital Photo Frame |
| STDC7150 |
|
Wireless: FM Tuner
Freescale, as the worldwide market leader for portable digital media technologies, enables companies to bring to market unique flash and hard drive based portable media players through patented semiconductor and software solutions. Freescale’s integration and support allows customers to develop devices with the longest battery life, smallest form factors, fastest time-to-market, and lowest system design costs in the market.
Developed with an optimized radio architecture, the STFM1000 FM tuner is a highly integrated, low power, single chip solution designed to provide FM radio capabilities when combined with Freescale’s SigmaTel product line portable media player SoCs.
The optimized radio architecture is designed to offer low power consumption, minimal external components for small form factor, and low cost through an optimum system partitioning and integrated automatic channel selectivity, demodulation, and stereo decoding. In addition, a complrehensive software development environment is available as part of Freescale’s world class software development kit for portable media players. |
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Features
- FM companion chip to portable media player SoC
- Allows for optimum system partitioning, flexibility, and reduced cost
- Modules and tools to place chip directly on PCB are available
- Uses 24 MHz crystal to generate clock for Host SoC to save cost and board space
- U.S./Europe/Japan band capability in 100 kHz steps
- High sensitivity due to integrated low-noise RF amplifier
- RF automatic gain control (AGC)
- Automatic internal channel selectivity
- Pll-based synthesizer tuning system
- RDS-compatible
- Adjustment-free stereo decoder
- Inter-IC communication bus (I2C) support up to 400 kbps
- 4mm x 4mm or 5mm x 5mm QFN package
- Host SoC software programmable:
- Stereo Blend, Hi-Cut, and SoftMute
- Attack/decay times for signal quality indicators
- Search/Stop function
- FM record via ADPCM and MP
Benefits
- Delivers a complete solution for adding fm reception to mp3 players and other applications when coupled with the portable media player SoCs
- Optimal solution partitioning for power consumption, board space, and cost
- Delivered as part of comprehensive software development kit (SDK) which allows customization for quick time to market
STFM1000 Specifications
- Input Sensitivity – I.4uV(EMF)
22.5 kHz freq deviation, 26 dB SNR, de-emphasis = 75 us,
faudio=1k, L=R
BW = 300 Hz – 15 kHz
- Channel Frequency Range with 100
kHz steps – 76
to 108 MHz
- Channel Selectivity 45dB
±200 kHz channel, 22.5 kHz freq deviation, de-emphasis
= 75 us, faudio=1k, L=R
- Maximum Signal to Noise Ratio (SNR) – 63
dB
22.5 kHz freq deviation, de-emphasis = 75 us, faudio=1k,
L=R
BW = 300 Hz – 15 kHz
- Total Harmonic Distortion (THD) – 0.04%
75 kHz freq deviation, de-emphasis = 75 us, faudio=1k, L=R
BW = 300 Hz – 15 kHz
- Stereo Separation – 40dB
75 kHz freq deviation, de-emphasis = 75 us, faudio=1k, L
only, 9% pilot
BW = 300 Hz – 15 kHz
- Power Consumption for STFM1000 – 35mW
LNA Gain is mid gain, tuned to 92.0 MHz
- Power Supply
DVDD1, AVDD1, AVDD2, AVDD4 – 1.35 - 1.8V
DVDDIO, AVDD3 (3.3V I2C I/O and PLL) – 3.0V
Chip Diagram
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