Vincotech A1080 GPS接收方案

Vincotech 公司的A1080 GPS接收模块是基于SiRF Star III低功耗芯片,不仅具有良好的灵敏度和低功耗,而且100%和A1037-A GPS模块兼容. A1080具有最小的占位面积和容易安装的特性,可用在手持设备和其它以电池为能源的应用. A1080具有并行跟踪的20个信道, 200.000 plus相关器,定位频率L1波段(1575MHz),跟踪灵敏度为-159dBm.定位精度小于10米CEP,水平定位精度小于2.5米CEP.本文介绍了A1080 GPS接收模块的主要特性, 最少元件配置框图,天线传感器框图和带限流器的天线传感器框图,以及GPS评估板EVA1080的特性和详细电路图.

Vincotechs A1080-A is developed for indoor use and is based on the SiRF Star III low power chip. It not only benchmarks sensitivity and power consumption, this receiver is also 100% compatible with the A1037-A GPS module. Guaranteeing one of the smallest footprints and easy implementation, the A1080-A can even be used in handheld devices and other size optimized battery powered applications.

Vincotech’s GPS modules A1080-A and -B are highly integrated GPS receiver modules that can be used as SMT components. They are capable of receiving signals from up to 20 GPS satellites and transferring them into position and timing informa-tion that can be read over a serial port. This new generation of GPS modules com-bines small size and high-end GPS functionality at low power consumption:
Operable at 3.3V / 23mA (typ.) @ 1fix per second
Small form factor of 19 x 16.2 mm (0.75” x 0.64”)
On board antenna supply voltage feed
Single-sided SMD component, for reflow soldering
Tape & reel packaging

图1.GPS接收模块A1080-A/-B 外形图
The difference between the “A” and the “B” version is the supported temperature range. While the “A” can be operated from -30°C to +85°C, the “B” version extends this range down to -40°C
A1080模块GPS特性:





图2.推荐的A1080最少元件配置框图



图3.A1080天线传感器框图



图4.带限流器的天线传感器框图



图5.推荐的A1080外接重置电路图
GPS评估板EVA1080
The GPS Evaluation Kit EVA1080 allows an easy evaluation of Vincotech’s GPS receiver module A1080-A by offering quick access to the ports of the module.
The EVA1080 serves three major purposes:
1. As a demonstration package of the module’s capabilities
Powering the module via the USB connector and connecting the GPS antenna with sufficient view to the sky will result in an NMEA output with position infor-mation.
2. As an example how to integrate the module into a system
The schematic in chapter “10 Board schematics” is a basic example how to in-tegrate the GPS module into an application or system.
3. To support an easy temporally design in
The signals provided on the Evaluation Kit allow direct integration into a sur-rounding system and is therefore an ideal development tool.
The EVA1080 includes the following components:
Demonstration board (labeled EVA1080) with one A1080-A GPS receiver
Active GPS antenna
USB cable to connect to your PC
CD with complete documentation and Vincotech’s GPS Cockpit software



图6.GPS评估板EVA1080-A外形图



图7.EVA1080评估板电路图