Si4702-C19-GM Silicon Labs

Si4702/03-C19 BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS Features This data sheet applies to Adaptive noise suppression Si4702/03-C Firmware 19 and Volume control greater Line-level analog output Worldwide FM band support 32.768 kHz reference clock (76108 MHz) 2-wire and 3-wire control Digital low-IF receiver interface Frequency synthesizer with 2.7 to 5.5 V supply voltage integrated VCO Ordering Information: Integrated LDO regulator Seek tuning allows direct connection to See page 37. Automatic frequency control (AFC) battery Automatic gain control (AGC) 3 x 3 mm 20-pin QFN package Excellent overload immunity Pin Assignments Pb-free/RoHS compliant (Top View) Signal strength measurement RDS/RBDS Processor (Si4703) Programmable de-emphasis (50/75 s) Integrated crystal oscillator Si4702/03-GM Applications Cellular handsets USB FM radio Portable navigation NC 1 20 19 18 17 16 MP3 players PDAs Consumer electronics FMIP 2 15 GND Portable radios Notebook PCs RFGND 3 14 LOUT GND Description PAD GND 4 13 ROUT The Si4702/03 integrates the complete tuner function from antenna input RST 5 12 GND to stereo audio output for FM broadcast radio reception. 7 8 9 10 6 11 V D Functional Block Diagram Headphone Si4702/03 Cable U.S. and International Patents DSP I LOUT DAC pendingAbbreviated U.S. Patent ADC FMIP FILTER LNA PGA RFGND List: DEMOD Q ROUT MPX DAC 7272375, 7127217, 7272373, ADC AUDIO 7272374, 7321324, 7339503, GPIO AGC 0 / 90 LOW-IF GPIO 7339504, 7355476, 7426376, 32.768 kHz 7436252, 7471940 VIO RCLK RDS RST TUNE AFC (Si4703) SDIO 2.75.5 V VA SCLK XTAL REG RSSI VD OSC SEN Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 1, 2021 CONTROL INTERFACE CONTROLLER AMPLIFIER SEN NC SCLK SDIO GPIO1 GPIO2 RCLK GPIO3 V IO VASi4702/03-C19 TABLE OF CONTENTS Section Page 1. Electrical Specifications .3 2. Typical Application Schematic .13 3. Bill of Materials 13 4. Functional Description .14 4.1. Overview 14 4.2. FM Receiver .14 4.3. General Purpose I/O Pins .15 4.4. RDS/RBDS Processor and Functionality .15 4.5. Stereo Audio Processing 15 4.6. Tuning 16 4.7. Reference Clock 17 4.8. Control Interface 17 4.9. Reset, Powerup, and Powerdown .18 4.10. Audio Output Summation 19 4.11. Initialization Sequence 19 4.12. Programming Guide 20 5. Register Summary .21 6. Register Descriptions 22 7. Pin Descriptions: Si4702/03-C19 36 8. Ordering Guide 37 9. Package Markings (Top Marks) .38 9.1. Si4702 Top Mark 38 9.2. Si4703 Top Mark 38 9.3. Top Mark Explanation 38 10. Package Outline: Si4702/03-C19 .39 11. PCB Land Pattern: Si4702/03-C19 .40 Additional Reference Resources .42 Document Change List .43 Contact Information 44 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice November 1, 2021