Si4830

Broadcast Mechanical Tuning AM/FM Radio Receiver

Description

The Si4830 is the first wheel-tuned digital CMOS AM/FM radio receiver IC that integrates the complete receiver function from antenna input to audio output. Leveraging Silicon Laboratories' proven and patented digital low intermediate frequency (low-IF) receiver architecture, the Si4830 delivers superior RF performance and interference rejection in both AM and FM bands. Additionally, the digital core provides advanced audio conditioning for all environments, removing pops, clicks, and loud static in variable signal conditions. The superior control algorithm integrated in Si4830 provides easy and reliable control interface while eliminating all the manual tuned external components used in traditional solutions.

Like other successful audio products from Silicon Labs, Si4830 offers unmatched integration and PCB space savings with minimum external components and less than 20 mm2 of board area, excluding the antenna inputs. The high integration and complete system production test simplifies design-in, increases system quality, and improves manufacturability. The receiver has very low power consumption, runs off two AAA batteries, and delivers the performance benefits of digital tuning to the legacy analog radio market.

Features

-Worldwide FM band support (64–108 MHz)

-Worldwide AM band support (520–1710 kHz)

-Selectable support for all AM/FM regional bands

-Wheel-tuned / Mechanical-tuned frequency support

-Mechanical volume control + off/on

-Excellent real-world performance

-Digital radio with leading low-IF architecture

-Automatic frequency control (AFC)

-Stereo/mono + tuning and stereo indicator

-EN55020 compliant

-Minimal BOM components w/ no manual alignment

-No external MCU required

-Two AAA batteries with 2.0 to 3.6 V supply voltage (T = 25° C)

-Wide range of ferrite loop sticks and air loop antennas

-24-pin SSOP package

-RoHS compliant

Applications

-Table and portable radios

-Stereos

-Mini/micro systems

-Boomboxes

-Clock radios

-Modules

-Entertainment systems

-Toys, lamps, and any application needing an AM/FM radio

 

 

 

 

 

Si4830

 

 

AMI

 

ADC

 

DAC

LOUT

AM

RFGND

LNA

 

DSP

 

 

ANT

 

 

 

 

 

 

 

 

 

 

 

ADC

 

DAC

ROUT

FM

 

AGC

 

 

 

 

ANT

FMI

 

 

 

 

 

 

0/90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNE1/2

XTALI

AFC

 

CONTROL

XTALO

 

 

 

 

INTERFACE

STEREO

 

 

 

 

 

 

2.0~3.6V

VDD

REG

XTAL

 

 

STATION

 

 

 

 

 

 

 

OSC

 

 

 

 

 

 

 

 

 

 

 

 

 

BAND

RST

 

AM/FM Receiver

 

Copyright © 2010 by Silicon Laboratories

 

2.24.2010

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Silicon Laboratories SI4830 manual Si4830, Broadcast Mechanical Tuning AM/FM Radio Receiver

SI4830 specifications

Silicon Laboratories SI4830 is a highly integrated, low-power AM/FM receiver designed for various consumer and industrial applications. This versatile device is primarily used in portable media players, radios, and other wireless audio products. One of its standout features is its superior sensitivity, which allows for excellent reception even in challenging environments.

The SI4830 utilizes a fully integrated architecture that eliminates the need for external components, simplifying the design process and reducing overall system costs. This integration not only saves space on printed circuit boards but also enhances performance by minimizing external noise and signal loss. The chip operates in the AM and FM frequency ranges, making it suitable for a broad range of radio broadcasts.

Another key characteristic of the SI4830 is its low power consumption. This feature is particularly crucial for battery-powered devices, offering extended operational life without compromising performance. It boasts a minuscule quiescent current, making it ideal for integration into portable devices, where battery life is a significant consideration.

The SI4830 is also equipped with advanced digital signal processing (DSP) capabilities. This technology enhances audio clarity and minimizes distortion, ensuring a premium listening experience. Additionally, the DSP allows for more robust tuning algorithms, resulting in quick and accurate channel selection, even in crowded frequency bands.

The device supports various audio formats and can be easily interfaced with microcontrollers through standard communication protocols. This flexibility enables designers to customize their applications according to specific requirements while ensuring compatibility with existing systems and technologies.

Furthermore, the SI4830 features a built-in automatic gain control (AGC) that optimizes signal strength by dynamically adjusting the gain based on incoming signal levels. It ensures consistent audio output quality regardless of the signal strength or broadcasting conditions.

In summary, the Silicon Laboratories SI4830 is a powerful and efficient AM/FM receiver that excels in sensitivity, low power usage, and advanced signal processing capabilities. Its high level of integration and support for various audio formats make it an ideal choice for modern portable audio applications, helping designers create innovative and reliable products to meet evolving consumer demands.