gps-details

Broadcom GNSS Chipsets

Author: Michael George

Date: 5 Nov 2025

Overview

The Broadcom website currently lists three generations of dual-frequency GNSS chipsets:

• BCM4778 is Broadcom’s third generation dual-frequency L1 + L5 GNSS receiver, announced in Sep 2021
• BCM47765 is part of the BCM4776 family supporting L1 + L5, announced in Jan 2020
• BCM47755 is part of the BCM4775 family supporting L1 + L5, announced in Sep 2017

The BCM47531 is also listed which is a fourth generation multi-constellation chipset, announced in Dec 2013.

In addition to the four chipsets currently shown on the Broadcom website, various other GNSS chipsets / families have been released over the years. Broadcom GNSS chipsets have been used by Apple, Samsung, Google, and Xiaomi as well as numerous budget watch brands.

Since mid-2020, Synaptics have also been producing chipsets such as the SYN4778, after acquiring certain assets from Broadcom. The SYN4778 (equivalent of the BCM4778) has since been identified in recent Garmin watches, starting with the fēnix 8.

This document will list Broadcom’s various families of GNSS chipset in reverse-chronological order.

Summary

Each GNSS chipset family has a separate page, accessible via clickable links.

Dual-Frequency

Announced	Family	Chipset	Bands	Notes
Sep 2021	BCM4778	BCM4778	L1 + L5	Third generation dual-frequency GNSS receiver for mobile + wearables
Jan 2020	BCM4776	BCM47768	L1 + L5	Second generation dual-frequency GNSS receiver for wearable devices
		BCM47765	L1 + L5	Second generation dual-frequency GNSS receiver
		BCM47764	L1	Single-frequency GNSS receiver in the Apple Watch Series 7
		BCM47762	L1	Single-frequency GNSS receiver
Sep 2017	BCM4775	BCM47758	L1 + L5	First generation dual-frequency GNSS receiver for wearable devices
		BCM47755	L1 + L5	First generation dual-frequency GNSS receiver
		BCM47754	L1	Single-frequency GNSS receiver in the Apple Watch Series 6
		BCM47752	L1	Single-frequency chipset GNSS receiver

Note: Some equivalent chipsets are also available from Synaptics - e.g. SYN4778, SYN47768, and SYN47762.

Single-Frequency

Announced	Family	Chipset	Notes
Sep 2015	BCM4774	BCM47748	GNSS chip for Internet of Things and wearable devices GPS, GLONASS, BeiDou, Galileo, QZSS
Sep 2014		BCM4774	Second-generation GNSS location hub PS, GLONASS, BeiDou, Galileo, QZSS
?	BCM4773	BCM47734	First-generation GNSS location hub GPS, GLONASS, BeiDou, QZSS
Sep 2014		BCM4773	First-generation GNSS location hub GPS, GLONASS, BeiDou, QZSS
Feb 2014	BCM4771	BCM4771	First-generation GNSS receiver for fitness wearables GPS, GLONASS, BeiDou, QZSS
Dec 2013	BCM4753	BCM47531	Fourth-generation multi-constellation GNSS receiver GPS, GLONASS, BeiDou, QZSS
?	BCM4752	BCM47522	Third-generation multi-constellation GNSS receiver GPS, GLONASS, QZSS
Feb 2013		BCM47521	Third-generation multi-constellation GNSS receiver GPS, GLONASS, QZSS
Mar 2012		BCM4752	Third-generation multi-constellation GNSS receiver GPS, GLONASS, QZSS
Feb 2011	BCM4751	BCM47511	Second-generation multi-constellation GNSS receiver GPS, GLONASS, QZSS
Oct 2010		BCM4751	Integrated monolithic GPS receiver GPS, QZSS
Jan 2008	BCM4750	BCM4750	Single-chip AGPS solution GPS

PND-on-a-chip

The BCM4760 was announced on 6 Jan 2010 at EDN and Linux Devices, but should not be confused with the other GNSS receivers.

It was an entire Personal Navigation System-on-Chip solution, running an embedded Linux / Android / WinCE operating system.