Si4770/77-A20 High-Performance Consumer Electronics Broadcast Radio Receiver and HD Radio Tuner Features - Worldwide FM band support (64–108 MHz) - Worldwide AM band support (520–1710 kHz) - Comprehensive signal quality metrics: RSSI, SNR, multipath interference, frequency offset, adjacent channel RSSI, frequency deviation, and image RSSI - Advanced patented RDS soft-decision decoder - Advanced, patented FM channel equalizer for multipath interference - Dynamic AM/FM channel bandwidth control - Programmable AM/FM soft mute - FM stereo-mono blend - FM hi-blend control - AM/FM hi-cut control - AM lo-cut filter - L/R analog and digital (I2S) audio outputs - Digital (I2S) zero-IF AM/FM I/Q outputs (Si4777 only) - Digital Low-IF architecture - Frequency synthesizer with fully integrated PLL-VCO - Fully integrated AM/FM front-end including high performance LNA, AGC with integrated resistor and capacitor banks, and RF and IF peak detectors - Integrated crystal oscillator - 1.2 to 5 V power supplies - QFN 40-pin, 6x6x0.85 mm - Pb-free/RoHS compliant Applications - Audio/video receivers Consumer electronics Boom boxes Home theater systems IQFS IOUT QOUT IQCLK FMAGC2 FMAGC1 Description The Silicon Labs Si4770/77-A20 represents the world's first high performance single-chip mixed signal CMOS receiver targeting high-end consumer electronics. The device is a true all-in-one chip, receiving RF with zero-BOM implementation, and performing all required demodulation and signal conditioning to provide digital I2S audio and / or left and right analog audio out. The Si4777 also supports AM/FM HD radio channel reception with digital (I2S) zero-IF (ZIF) I/Q outputs for interface to an HD radio processor. The Si4770/77-A20 leverages Silicon Labs' long and proven history of delivering mixed signal low-intermediatefrequency (low-IF) ICs. The low-IF digital architecture and leading mixed signal design provide superior RF performance and interference rejection in a highly integrated, single chip device. As the leader in mixed signal CMOS, Silicon Labs has now shipped over 2 billion such devices. The fully integrated analog chain receives analog broadcast bands including AM and FM. The solution offers superior on-chip filtering and signal conditioning, and incorporates automatic channel bandwidth adjustment, sub-2 msec tune time and corresponding very fast seek time, highly effective seek algorithms, and advanced audio conditioning including programmable soft mute, multi-path mitigation / cancellation, stereo-mono blend and hi-cut / lo-cut. The Si4770/77-A20 also incorporates the world's leading FM R(B)DS decoder, including all required symbol decoding, block synchronization, error detection, and error correction functions. Si4770/77 ADC FMXIP IF PKD RF PKD FMXIN ADC RFREG DAC LOUT/ MPXOUT DAC ROUT DSP REG RL FMO FMI LNA DCLK DFS DOUT 0°/90° RDS RF PKD RF PKD INTB RSTB AMI LNA Copyright © 2012 by Silicon Laboratories SCL A1 SDA A0 XTAL1 AM/FM Receiver and HD-R Tuner VIO1 VIO2 XTAL2/ RCLK RFGND CNTRL ClK Gen 06.12.12 Si4770/77-A20 High-Performance Consumer Electronics Broadcast Radio Receiver and HD Radio Tuner Selected Electrical Specifications Parameter Test Conditions Min Typ Max Units Ambient temperature –40 Analog supply voltage 5 V (VA) 4.5 25 85 °C 5 5.5 Digital supply voltage 3.3 V (VD) V 2.7 3.3 3.6 Interface supply voltage (VIO1) V 1.7 3.3 3.6 V Interface supply voltage (VIO2) 1.2 3.3 3.6 V Analog supply current (FM mode) 121 130 139 mA Analog supply current (AM mode) 129 140 147 mA Digital supply current 47 60 81 mA Interface supply current (VIO1) 0.1 0.5 0.82 mA Interface supply current (VIO2) 0.1 0.2 0.5 mA Input frequency 64 — 108 MHz Tune time — 1.5 — msec Seek time/channel — 20 — msec FM IP3 Blockers at 400/800 kHz offset 115 117 — dBµV SINAD = 26 dB — –3.5 –2 dBµV 520 — 1710 kHz — 55 — msec 142 146 — dBµV 110 120 — dBµV — 14 17 dBµV EMF Sensitivity AM Input frequency Seek time/channel Desired = 700 kHz Undesired = 1000, 1700 kHz AGC Disabled (Max Gain) Blockers at 40/80 kHz offset AGC Disabled (Max Gain) SINAD = 26 dB IP2 IP3 Sensitivity Pin Assignment Package Information FMAGC1 FMAGC2 GPIO1 GPIO2 DACREF XTAL1 RCLK/ XTAL2 ROUT LOUT/ MPXOUT VA 40 39 38 37 36 35 34 33 32 31 NC 1 30 NC/BLEND FMXIP 2 29 DCLK FMXIN 3 28 DFS RFGND 4 27 DOUT RFREG 5 26 NC/QOUT FMO 6 25 NC/IOUT FMI 7 24 NC/IQFS NC 8 23 NC/IQCLK NC 9 22 VIO2 AMI 10 21 DBYP GND PAD 20 19 18 17 16 15 14 13 12 11 VD VIO1 INTB/DFS2 SCL SDA RSTB NC/DOUT2 NC/DCLK2 A1/INTB A0 AM/FM Receiver and HD-R Tuner Symbol A A1 b D D2 e 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 6.00 BSC Symbol Max 0.90 0.05 0.30 4.25 E2 L aaa bbb ccc ddd eee Min 3.95 0.30 Millimeters Nom 4.10 0.40 0.10 0.10 0.08 0.10 0.05 Copyright © 2012 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 06.12.12 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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