maxim推出通用型GPS接收机MAX2769B,max2769B是高性能汽车级GPS，支持GLONASS、伽利略和北斗定位系统的RF接收机,主要应用于汽车导航系统和笔记本电脑和上网本等。

MAX2769B的详细介绍

The MAX2769B is a next-generation Global Navigation Satellite System (GNSS) receiver covering GPS, GLONASS, Galileo, and Compass navigation satellite systems on a single chip. This single-conversion GNSS receiver is designed to provide high performance for industrial and automotive applications.

Designed on Maxim's advanced, low-power SiGe BiCMOS process technology, the MAX2769B offers the highest performance and integration at a low cost. Incorporated on the chip is the complete receiver chain, including a dual-input LNA and mixer, followed by the image-rejected filter, PGA, VCO, fractional-N frequency synthesizer, crystal oscillator, and a multibit ADC. The total cascaded noise figure of this receiver is as low as 1.4dB.

The MAX2769B completely eliminates the need for external IF filters by implementing on-chip monolithic filters and requires only a few external components to form a complete low-cost GPS RF receiver solution.

The MAX2769B is the most flexible receiver on the market. The integrated delta-sigma fractional-N frequency synthesizer allows programming of the IF frequency within a ±30Hz (f_XTAL = 32MHz) accuracy while operating with any reference or crystal frequencies that are available in the host system. The ADC outputs CMOS logic levels with 1 or 2 quantized bits for both I and Q channels, or up to 3 quantized bits for the I channel. I and Q analog outputs are also available.

The MAX2769B is packaged in a 5mm x 5mm, 28-pin thin QFN package with an exposed paddle.

MAX2769的关键特性

• AEC-Q100 Automotive Qualified
• GPS/GLONASS/Galileo/Compass Systems
• 40pF Output Clock Drive Capability
• No External IF SAW or Discrete Filters Required
• Programmable IF Frequency
• Fractional-N Synthesizer with Integrated VCO Supports Wide Range of Reference Frequencies
• Dual-Input Uncommitted LNA for Separate Passive and Active Antenna Inputs
• 1.4dB Cascade Noise Figure
• Integrated Crystal Oscillator
• Integrated Active Antenna Sensor
• 2.7V to 3.3V Supply Voltage
• Small, 28-Pin, RoHS-Compliant, Thin QFN Lead-Free Package (5mm x 5mm)

MAX2769的应用/使用

汽车导航系统
笔记本电脑和上网本
本地使能移动电话
舰艇/船队导航系统
PND (个人导航设备)
软件GPS
远程信息处理(物品跟踪、库存管理)