Si4825-A10 BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER Features Worldwide FM band support Automatic frequency control (AFC) (64109 MHz) Integrated LDO regulator Worldwide AM band support 2.0 to 3.6 V supply voltage (5041750 kHz) Wide range of ferrite loop sticks and SW band support air loop antennas supported (2.328.5 MHz) 16-pin SOIC No manual alignment necessary RoHS-compliant Mono audio output Direct volume control Selectable support AM/FM/SW Not EN55020 compliant* Ordering Information: regional bands *Note: For consumer applications that See page 14. Enhanced FM/SW band coverage require EN 55020 compliance, use Si483x. Applications Pin Assignments Table and portable radios Modules Mini/micro systems Clock radios Si4825-A10 (SOIC) CD/DVD players Mini HiFi Boom boxes Entertainment systems 1 16 AOUT LNA EN Description 2 GND TUNE1 15 3 14 TUNE2 VDD The Si4825 is the entry level mechanical-tuned digital CMOS AM/FM/SW radio 4 XTALI BAND 13 receiver IC that integrates the complete receiver function from antenna input to 5 NC 12 XTALO audio output. The Si4825 extends Silicon Laboratories multi-band tuner family, 6 11 FMI VOL- and further increases the ease and attractiveness of design radio reception to 7 RFGND 10 VOL+ audio devices through small size and board area, minimum component count, and 8 9 AMI RST superior, proven performance. The Si4825 requires a simple application circuit and removes any requirements for manually tuning components during the manufacturing process. The receiver has very low power consumption, runs off two AAA batteries, and delivers the performance benefits of digital tuning to the This product, its features, and/or its analog radio market. architecture is covered by one or more of Functional Block Diagram the following patents, as well as other patents, pending and issued, both Si4825 foreign and domestic: 7,127,217 Si4830/34 7,272,373 7,272,375 7,321,324 ADC AMI 7,355,476 7,426,376 7,471,940 AM LNA DSP DAC AOUT ANT RFGND 7,339,503 7,339,504. ADC FM AGC ANT FMI 0/90 TUNE1/2 ADC AFC CONTROL INTERFACE XTALI BAND 2.0~3.6V VDD XTAL REG OSC Rev. 1.0 5/13 Copyright 2013 by Silicon Laboratories Si4825 This information applies to a product under development. Its characteristics and specifications are subject to change without notice. LNA EN VOL+/- RSTSi4825-A10 2 Rev. 1.0