Broadcom’s BCM4751, a single-chip GPS receiver, supports the latest Quasi-Zenith Satellite System (QZSS) recently launched by Japan (see the figure). The device also supports other satellite constellations, including the Satellite Based Augmentation System (SBAS). This support is designed to enhance GPS performance, including improved urban canyon navigation and availability of position fixes in more areas than competitive solutions.
The BCM4751’s parallel, hardware-correlator architecture promises fast signal searches, accurate real-time navigation, high tracking sensitivity, and very low average power consumption. Other features include a 65-nm CMOS design with integrated baseband processor and a printed-circuit board (PCB) footprint of 30 mm2 including a band-pass filter, temperature-controlled crystal oscillator (TCXO), and passives. The receiver is available in both wafer-level ball-grid array (WLBGA) and fine-pitch ball-grid array (FPBGA) packages.