SI4770-A20-GMR

Description：RF RX AM/FM 520KHZ-1.71MHZ 40QFN
Series：-
Mfr：Skyworks Solutions Inc.
Package：Tape & Reel (TR)

SKU:71d3fe178499 Category: RF Receivers Brand: Skyworks Solutions Inc.

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Product introduction

SI4770-A20-GMR is listed in the RF Receivers range at ChipApex. The manufacturer field lists Skyworks Solutions Inc.. Its product description is RF RX AM/FM 520KHZ-1.71MHZ 40QFN. Review the specifications below when checking this part for your BOM.

RF Receivers specifications for SI4770-A20-GMR

Description：RF RX AM/FM 520KHZ-1.71MHZ 40QFN
Series：-
Mfr：Skyworks Solutions Inc.
Package：Tape & Reel (TR)
Frequency：520kHz ~ 1.71MHz, 64MHz ~ 108MHz
Sensitivity：-
Data Rate (Max)：-
Modulation or Protocol：AM, FM, RDS
Applications：General Purpose
Current - Receiving：140mA
Data Interface：PCB, Surface Mount
Memory Size：-
Antenna Connector：PCB, Surface Mount
Features：RSSI Equipped
Voltage - Supply：4.5V ~ 5.5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：40-VFQFN Exposed Pad
Supplier Device Package：40-QFN (6x6)
Grade：-
Qualification：-

RF Receivers datasheet and documents for SI4770-A20-GMR

SI4770-A20-GMR

RF Receivers Overview

The SI4770-A20-GMR is a Pro-Audio AM/FM receiver and HD Radio tuner manufactured by Skyworks Solutions Inc. It operates within frequency ranges of 520kHz to 1.71MHz for AM and 64MHz to 108MHz for FM. The device supports RDS data reception and utilizes an I2S digital audio interface. It is housed in a 40-QFN (6x6 mm) surface-mount package with exposed pads. Power supply requirements range from 4.5V to 5.5V, with a receive current of approximately 130mA to 140mA. The component functions within a temperature range of -40°C to +85°C.

RF Receivers Feature Summary

Integrated Pro-Audio AM/FM receiver with HD Radio tuning capabilities
Supports RDS data reception for enhanced broadcast information
Features I2S digital audio interface for direct connection to processors
Includes RSSI functionality for signal strength monitoring

RF Receivers Applications

High-fidelity audio systems requiring AM/FM reception
HD Radio enabled consumer electronics
Automotive infotainment units
Home theater and stereo receivers

RF Receivers Procurement Notes

This component is officially listed as obsolete or end-of-life by the manufacturer. Verification of availability should focus on distributor surplus stock or authorized secondary market channels rather than standard manufacturing pipelines. Confirm specific ordering suffixes and revision levels against original design specifications to ensure compatibility with existing hardware layouts.

RF Receivers Selection Notes

Designers must account for the discontinued status when planning long-term production cycles. Verify that the I2S interface aligns with the target system's digital audio controller. Ensure power supply rails meet the specified voltage range and that thermal management accommodates the QFN package characteristics within the operational temperature limits.

RF Receivers Part Context

The SI4770-A20-GMR belongs to the Si477x series of radio tuners designed for high-performance audio applications. This series integrates RF front-end and baseband processing into a single chip, simplifying circuit design for AM, FM, and HD Radio standards. The GMR suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.