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Si4713 Dataheets PDF



Part Number Si4713
Manufacturers Silicon Laboratories
Logo Silicon Laboratories
Description FM RADIO TRANSMITTER
Datasheet Si4713 DatasheetSi4713 Datasheet (PDF)

Si4712/13-B30 FM RADIO TRANSMITTER WITH RECEIVE POWER SCAN Features Integrated receive power measurement Worldwide FM band support (76–108 MHz) Requires only two external components Frequency synthesizer with integrated VCO Digital stereo modulator Programmable pre-emphasis Analog/digital audio interface Audio silence detector Programmable reference clock RDS/RBDS encoder (Si4713 only) PCB loop and stub antenna support with self-calibrated capacitor tuning Programmable transmit level Audio dy.

  Si4713   Si4713


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Si4712/13-B30 FM RADIO TRANSMITTER WITH RECEIVE POWER SCAN Features Integrated receive power measurement Worldwide FM band support (76–108 MHz) Requires only two external components Frequency synthesizer with integrated VCO Digital stereo modulator Programmable pre-emphasis Analog/digital audio interface Audio silence detector Programmable reference clock RDS/RBDS encoder (Si4713 only) PCB loop and stub antenna support with self-calibrated capacitor tuning Programmable transmit level Audio dynamic range control Advanced modulation control 2.7 to 5.5 V supply voltage Integrated LDO regulator 3 x 3 x 0.55 mm 20-pin QFN Pb-free and RoHS Compliant Designed for compatibility with cellular operation Applications Cellular handsets/hands-free MP3 players Portable media players Wireless speakers/microphone Satellite digital audio radios Personal computers/notebooks Description The Si4712/13-B30 integrates the complete transmit functions for standards-compliant unlicensed FM broadcast stereo transmission. The chip also allows integrated receive power scanning to identify low signal power FM channels. Users must comply with local regulations on radio frequency (RF) transmission. Functional Block Diagram Si4712/13 Ordering Information: See page 34. Pin Assignments Si4712/13-B30 (Top View) NC GPO1 GPO2/INT GPO3/DCLK LIN NC 1 20 19 18 17 16 NC 2 15 RIN RFGND 3 TXO 4 GND PAD 14 DFS 13 DIN RST 5 12 GND 6 7 8 9 10 11 VDD SEN SCLK SDIO RCLK VIO Tx Ant TXO L1 120 nH RFGND PEAK DETECT DIGITAL AUDIO DSP DAC ADC DAC ADC DIN DFS LIN RIN Patents pending Note: To ensure proper operation and performance, follow the guidelines in “AN383: Universal Antenna Selection and Layout Guidelines.” Silicon Laboratories will evaluate schematics and layouts for qualified customers. VDD 2.7–5.5 V AFC CONTROL INTERFACE GPO RDS (Si4713) LDO GND C1 22 nF RCLK VIO RST SDIO SCLK SEN GPO3/ DCLK GPO2/ INT GPO1 Rev. 1.1 2/08 Copyright © 2008 by Silicon Laboratories Si4712/13-B30 Si4712/13-B30 2 Rev. 1.1 TABLE OF CONTENTS Si4712/13-B30 Section Page 1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Test Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.1. Test Circuit Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.2. Test Circuit Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3. Typical Application Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.1. Analog Audio Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.2. Digital Audio Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.3. Typical Application Schematic Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4. Universal AM/FM RX/FM TX Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.1. Universal AM/FM RX/FM TX Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.2. FM Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.3. Receive Power Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 5.4. Digital Audio Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.5. Line Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.6. Audio Dynamic Range Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.7. Audio Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.8. Pre-emphasis and De-emphasis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.9. RDS/RBDS Processor (Si4713 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.10. Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.11. Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.12. Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.13. GPO Outputs . . . . . . . . .


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