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SI4840-A10 Datasheet(PDF) 1 Page - Silicon Laboratories |
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SI4840-A10 Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 26 page Rev.1.0 8/11 Copyright © 2011 by Silicon Laboratories Si4840/44-A10 Si4840/44-A10 B ROADCAST A NALOG TUNING D IGITAL D ISPLAY AM /F M/SW R ADIO R ECEIVER Features Applications Description The Si4840/44 is the first analog-tuned digital-display digital CMOS AM/FM/SW radio receiver IC that integrates the complete receiver function from antenna input to audio output. Working with Host MCU (I2C-compatible 2-wire control interface), frequencies, and stereo/mono information can be displayed on LCD, while the analog-tune features are kept. Leveraging Silicon Laboratories' proven and patented digital low intermediate frequency (low-IF) receiver architecture, the Si4840/44 deliver superior RF performance and interference rejection. The superior control algorithm integrated in Si4840/44 provides easy and reliable control interface while eliminating all the manual tuned external components used in traditional solution. Functional Block Diagram Worldwide FM band support (64–109 MHz) Worldwide AM band support (504–1750 kHz) SW band support (Si4844 only) (2.3–28.5 MHz) Selectable support for all AM/FM regional bands 2-wire control interface Mono/Stereo and valid station indicator Digital volume support Bass/Treble support Minimal BOM components with no manual alignment Excellent real-world performance Automatic frequency control (AFC) EN55020 compliant Two AAA batteries with 2.0 to 3.6 V supply voltage (T = 25 °C) Wide range of ferrite loop sticks and air loop antenna support 24-pin SSOP package RoHS compliant Table and portable radios Stereos Mini/micro systems Boom boxes Clock radios Modules for consumer electronics Entertainment systems Toys, lamps, and any application needing an AM/FM radio Mini HiFi iPhone docking Si4830/34 ADC ADC DSP DAC DAC ROUT LOUT AFC Si484x RFGND LNA AMI AGC REG VDD1/2 2.0~3.6V XTAL OSC FMI 0/90 AM ANT FM ANT CONTROL INTERFACE TUNE1/2 BAND XTALI ADC This product, its features, and/or its architecture is covered by one or more of the following patents, as well as other patents, pending and issued, both foreign and domestic: 7,127,217; 7,272,373; 7,272,375; 7,321,324; 7,355,476; 7,426,376; 7,471,940; 7,339,503; 7,339,504. Ordering Information: See page 20. Pin Assignments Si4840/44-A10 (SSOP) NC FMI RFGND AMI BAND TUNE2 TUNE1 IRQ LNA_EN NC NC NC RST LOUT ROUT DBYP VDD2 SCLK SDIO XTALO XTALI VDD1 GND GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 |
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