Description

The Si4831BDY is a 2nd generation mechanical-tuned digital CMOS AM/FM/SW radio receiver IC. It offers unmatched integration and PCB space savings with minimum external components and a small board area. The Si4831BDY requires a simple application circuit and removes any requirements for manual tuning components during the manufacturing process. It has very low power consumption, runs off two AAA batteries, and delivers the performance benefits of digital tuning to the analog radio market.

Specifications and features

1. Worldwide FM band support (64–109 MHz)
2. Worldwide AM band support (504–1750 kHz)
3. SW band support (Si4835 only) (5.6–22 MHz)
4. Excellent real-world performance
5. EN55020-compliant
6. No manual alignment necessary
7. Flexible band selections
8. Automatic frequency control (AFC)
9. Integrated LDO regulator
10. 2.0 to 3.6 V supply voltage
11. Wide range of ferrite loop sticks and air loop antennas supported
12. 24-pin SSOP
13. RoHS-compliant
14. Supports station and stereo LED indicators
15. Direct volume control
16. Bass and treble tone control

Application Scenarios

The Si4831BDY is commonly used in:

• Table and portable radios
• Stereos
• Mini/micro systems
• CD/DVD players
• Boom boxes
• Modules
• Clock radios
• Mini HiFi
• Entertainment systems

Comparison

- Unmatched integration and space savings

- Minimum external components required

- Simple to design, manufacture, and support

- Low power consumption

- Provides performance benefits of digital tuning

- SW band support only available in Si4835