SI4769-A41-AM

Si476x High-Performance Automotive AM/FM Radio Receiver and HD Radio Tuner IQFS IOUT QOUT IQCLK ICIN ICIP Si476x RF PKD WXI Features - Worldwide FM band support (64–108 MHz) - AM/FM HDR support - Worldwide AM band support (520–1710 kHz) - Advanced RDS/RBDS demodulator/decoder - Digital FM MPX decoder - Integrated FM active splitter - Addresses companion AF/RDS data receiver - Advanced AM/FM noise blankers - Dynamic AM/FM channel bandwidth control - Advanced FM hi-cut control - Programmable FM stereo-mono blend - Programmable AM/FM soft mute - Full suite of signal metrics: RSSI, SNR, multi-path interference, frequency offset, adjacent channel strength, USN - Analog and digital (I2S) audio outputs - Digital (I2S) baseband AM/FM I/Q - Analog FM MPX output - Low-IF architecture - Eliminates expensive 10.7 MHz IF ceramic filters - On-chip AM/FM AGC with integrated resistor and varactor banks - Eliminates external pin diode attenuators and  varactors - 1.5 to 5 V power supplies - QFN 40, 6 x 6 x 0.85 mm - Pb-free/RoHS compliant - AEC-Q100 qualified Applications - OEM automotive infotainment systems - Aftermarket car radio systems - OEM automotive PND docking system FMAGC2 FMAGC1 Description The Si476x radio receiver family employs 100% RF CMOS technology to bring outstanding receiver performance to the automotive infotainment industry, which demands high performance and quality. The Si476x receiver family supports worldwide FM and AM radio reception. Additional variants support weather band, shortwave, longwave frequencies, and dual antenna FM phase diversity reception. The Si476x incorporates a digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS) including all required symbol decoding, block synchronization, error detection, and error correction functions. All odd-numbered variants in the family support AM/FM HD Radio channel reception with digital (I2S) baseband I/Q outputs for interface to a HD Radio demodulator/decoder. The family leverages Silicon Laboratories’ patented digital architecture, delivering superior RF performance and interference rejection. The proven digital techniques provide excellent sensitivity in weak signal environments, and superb selectivity and inter-modulation immunity in strong signal environments. The solution offers dynamic AM/FM channel bandwidth control, auto-calibrated digital tuning, and proven AM/FM seek functionality based on multiple signal quality and band parameters. The family offers highly flexible and advanced audio processing including AM/FM noise blanking, programmable soft mute, FM multi-path mitigation, FM stereo-mono blend, and FM hi-cut. In addition, the Si476x provides an integrated clock oscillator or accepts a reference clock and an I2C-compatible, 2-wire control interface. The Si476x receiver system specifies a minimal bill of materials, resulting in a very small board space requirement and making the solution ideal for any automotive application from single tuner radios to multiple tuner radios addressing companion TMC/AF reception/ scanning. LNA ADC FMXIP FMXIN ADC RFREG DAC LOUT/ MPXOUT DAC ROUT DSP IF PKD MXR PKD REG RL FMO FMI LNA DCLK DFS DOUT 0°/90° RDS RF PKD RF PKD LNA RFGND VIO1 SCL A1 SDA A0 ICOP ICON XTAL2/ RCLK VIO2 XOUT Automotive AM/FM Tuner INTB RSTB CNTRL ClK Gen XTAL1 AMI Copyright © 2011 by Silicon Laboratories 11.10.11 Si476x High Performance Automotive AM/FM Radio Receiver and HD Radio (HDR) Tuner Selected Electrical Specifications Parameter Test Conditions Ambient temperature Min Typ Max Units –40 25 85 °C Analog supply voltage 5 V (VA) 4.5 5 5.5 V Digital supply voltage 3.3 V (VD) 2.7 3.3 3.6 V Interface supply voltage (VIO1) 1.7 3.3 3.6 V Interface supply voltage (VIO2) 1.2 3.3 3.6 V Analog supply current — 130 — mA Digital supply current — 60 — mA Interface supply current (VIO1) — 90 — µA Interface supply current (VIO2) — 20 — µA 108 MHz FM Input frequency 64 Tune time — 0.9 — ms AF scan time — 7.5 — ms Seek time/channel — 20 — ms Max frequency deviation — 150 — kHz 1710 kHz — ms AM Input frequency 510 Seek time/channel — Pin Assignment Package Information FMAGC1 FMAGC2 ICIN ICIP DACREF XTAL1 RCLK/ XTAL2 ROUT LOUT/ MPXOUT VA 40 39 38 37 36 35 34 33 32 31 NC 1 30 BLEND/NC FMXIP 2 29 DCLK FMXIN 3 28 DFS RFGND 4 27 DIN RFREG 5 26 QOUT FMO 6 25 IOUT FMI 7 24 IQFS WXI/NC 8 23 IQCLK AMI 9 22 VIO2 NC 10 21 DBYP GND PAD 20 19 18 17 16 15 14 13 12 11 VD VIO1 DFS2 SCL SDA RSTB DOUT2 DCLK2 INTB A0 Automotive AM/FM Tuner 55 Symbol A A1 b D D2 e Min 0.80 0.00 0.18 3.95 Millimeters Nom 0.85 0.02 0.25 6.00 BSC 4.10 0.50 BSC Symbol Max 0.90 0.05 0.30 4.25 Min E E2 L L1 aaa bbb 3.95 0.30 0.03 Millimeters Nom 6.00 BSC 4.10 0.40 0.05 0.10 0.10 Copyright © 2011 by Silicon Laboratories Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders Max 4.25 0.50 0.08 11.10.11 Smart. Connected. Energy-Friendly Products Quality Support and Community www.silabs.com/products www.silabs.com/quality community.silabs.com Disclaimer Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. 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