AT9850B—Single Beidou Navigation Positioning Chip

The AT9850B is a high-performance, low-power dual-frequency single Beidou satellite navigation receiver SOC chip. It integrates an RF front-end, digital baseband, multi-mode satellite signal processing engine, and power management, offering high integration and simple peripheral circuitry.

It supports China’s Beidou B1I/B1C single-frequency or B1I/B1C/B2a dual-frequency positioning, Beidou II and III, and standalone Beidou positioning and timing. The chip enables fast satellite acquisition for accurate positioning, improving performance in complex environments. It includes anti-jamming hardware acceleration to detect and suppress RF interference.

Key Features

• Supports B1I/B1C and B2a dual-frequency signal reception

• Standalone Beidou positioning

• Supports Beidou II/III

• Supports A-BDS

• Active antenna detection and protection

• Integrated DCDC and LDO; supports 1.8/3.3V single power supply

Chip Applications

• Vehicle positioning and navigation

• Timing

• Wearable devices

• IoT positioning devices

• Portable devices (e.g., smartphones, tablets)

Performance Metrics

Package Diagram

Pin Configuration

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