SI4825-A10 SOP-16 Full-Band AM/FM/SW Radio Receiver IC (2-Pack)

SI4825-A10 SOP-16 Full-Band AM/FM/SW Radio Receiver IC (2-Pack)

The SI4825-A10 from Silicon Laboratories is a fully integrated AM/FM/Shortwave radio receiver IC in a SOP-16 surface-mount package. It covers AM (520-1710kHz), FM (64-108MHz), and Shortwave (2.3-28.5MHz) bands with analog potentiometer tuning — no microcontroller required. Ideal for DIY portable radio and retro receiver designs.

Key Specifications

Parameter	Value
Part Number	SI4825-A10
Package	SOP-16 (SMD)
AM Band	520 - 1710kHz
FM Band	64 - 108MHz
Shortwave Bands	2.3 - 28.5MHz (11 SW bands)
Tuning Method	Analog potentiometer (no MCU needed)
Supply Voltage	2.7V - 5.5V DC
Audio Output	Differential analog (drives headphone or speaker amp)
Sensitivity (FM)	-107dBm typical
SNR (FM)	65dB typical
Operating Temperature	-40C to +85C
Quantity	2 pieces

Why Choose SI4825-A10?

• No MCU Required - Analog potentiometer tuning; simplest possible radio design
• Full Band Coverage - AM, FM, and 11 SW bands in one IC
• High Sensitivity - -107dBm FM sensitivity for weak signal reception
• Low Power - Suitable for battery-powered portable radio
• Minimal External Components - Requires only antenna, tuning pot, and audio output stage

Typical Applications

• DIY portable AM/FM/SW radio receiver
• Retro-style analog tuning radio project
• Educational radio receiver kit
• Emergency radio with wide band coverage
• Shortwave listening (SWL) receiver

FAQ

Q: Does SI4825-A10 need an Arduino or MCU to operate? No - the SI4825-A10 uses analog potentiometer tuning. Connect a 100k ohm pot between VCC and GND, wiper to TUNE pin. No code or MCU required.

Q: What antenna is needed for SI4825-A10? FM: 75cm wire antenna. AM: ferrite bar antenna (loopstick). SW: 1-3m wire antenna. The IC has built-in LNA for each band.

Package Contents

• 2x SI4825-A10 SOP-16 Full-Band Radio Receiver IC

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