Si4820/24-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 (Si4824 only) air loop antennas supported (5.622 MHz) 24-pin SSOP 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. require EN 55020 compliance, use Si4831/35-B. Applications Pin Assignments Table and portable radios Modules Mini/micro systems Clock radios Si4820/24-A10 (SSOP) CD/DVD players Mini HiFi Boom boxes Entertainment systems 1 24 AO UT LNA EN 2 23 NC NC Description 3 22 D BYP TUN E1 4 21 VDD2 TUN E2 The Si4820/24-A10 is the entry level mechanical-tuned digital CMOS AM/FM/SW 5 20 VDD1 BAN D radio receiver IC that integrates the complete receiver function from antenna input 6 19 XT ALI NC to audio output. The Si4820/24-A10 extends Skyworks multi-band tuner family, 7 18 NC XT ALO and further increases the ease and attractiveness of design radio reception to 8 17 audio devices through small size and board area, minimum component count, and FM I VO L- superior, proven performance. The Si4820/24-A10 is drop-in replaceable to the 9 16 RFGND VO L+ existing Si4831/35 tuner, requires a simple application circuit, and removes any 10 15 RST NC requirements for manually tuning components during the manufacturing process. 11 14 GND NC It is a very simple product to design, manufacture, and support across multiple 12 13 GND AMI product lines. The receiver has very low power consumption, runs off two AAA batteries, and delivers the performance benefits of digital tuning to the analog radio market. This product, its features, and/or its architecture is covered by one or more of Functional Block Diagram the following patents, as well as other patents, pending and issued, both Si4820/24 Si4830/34 foreign and domestic: 7,127,217 AMI ADC 7,272,373 7,272,375 7,321,324 AM LNA 7,355,476 7,426,376 7,471,940 DSP DAC AOUT RFGND ANT 7,339,503 7,339,504. ADC FM AGC ANT FMI 0/90 TUNE1/2 ADC AFC XTALI CONTROL INTERFACE BAND 2.0~3.6V VDD1/2 XTAL REG OSC Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 1, 2021 LNA EN RSTSi4820/24-A10 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 1.0 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice September 1, 2021