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MTK GPS方案

MT3333 GPS芯片

概述聯(lián)發(fā)科技 MT3333 是多合一的多星系衛(wèi)星定位系統(tǒng)單芯片(SoC),能廣泛適用于移動(dòng)通信、車(chē)用、定時(shí)、個(gè)人防盜追蹤系統(tǒng)、無(wú)人飛行機(jī)與工業(yè)應(yīng)用。MT3333 具備高追蹤精準(zhǔn)度,能在擁擠的城市環(huán)境中提供更好的表現(xiàn)。MT3333 僅僅只需外八個(gè)被動(dòng)外部組件,同時(shí)與聯(lián)發(fā)科技 MT3337 和 MT3339 的腳位兼容,使您能有彈性的設(shè)計(jì)一系列不同層級(jí)的設(shè)備,并減少重復(fù)的硬件開(kāi)發(fā)工作。主要特色追蹤感度

  • 型號(hào):
  • 采用芯片:
  • 尺寸:

概述

聯(lián)發(fā)科技 MT3333 是多合一的多星系衛(wèi)星定位系統(tǒng)單芯片(SoC),能廣泛適用于移動(dòng)通信、車(chē)用、定時(shí)、個(gè)人防盜追蹤系統(tǒng)、無(wú)人飛行機(jī)與工業(yè)應(yīng)用。MT3333 具備高追蹤精準(zhǔn)度,能在擁擠的城市環(huán)境中提供更好的表現(xiàn)。


MT3333 僅僅只需外八個(gè)被動(dòng)外部組件,同時(shí)與聯(lián)發(fā)科技 MT3337 和 MT3339 的腳位兼容,使您能有彈性的設(shè)計(jì)一系列不同層級(jí)的設(shè)備,并減少重復(fù)的硬件開(kāi)發(fā)工作。

主要特色

  • 追蹤感度:-165dBm

  • 持續(xù)追蹤功耗:5~19mA

  • 支持 GPS, GLONASS, Beidou, Galileo, QZSS, SBAS

  • 具備聯(lián)發(fā)科技 AlwaysLocate? 技術(shù),可降低功耗

MT3333 內(nèi)置的 LNA 可達(dá)到 2.2 dB 的 total receiver chain NF,所以可以不需要外置的 LNA 組件。另外,透過(guò)芯片上的 image-rejection mixer,您也不需要插件 SAW filter。


MT3333 在提供持續(xù)定位的同時(shí),也提供最低的功耗。透過(guò)數(shù)個(gè)高端功能如 AlwaysLocate?、EASY?、HotStill?、EPO? 以及日志功能,MT3333 適用于各種可攜帶式設(shè)備應(yīng)用,如數(shù)字相機(jī)、移動(dòng)電話、可攜式媒體播放器與游戲設(shè)備。

Features

Specifications

  • GPS/GLONNASS/GALILEO/BEIDOU receiver

  • Supports multi-GNSS including QZSS and SBAS ranging

  • Supports WAAS/ENGNOS/MSAS/GAGAN

  • 12 multi-tone active interference cancellers (with ISSCC2011 award)

  • RTCM ready

  • Indoor/outdoor multipath detection and compensation

  • Supports FCC E911 compliance and A-GPS

  • Maximum fixed update rate up to 10 Hz


ARM7EJ-S CPU

  • Up to 158 MHz processor clock

  • Dynamic clock rate control


Package

  • VFBGA: 4.3 mm x 4.3 mm, 57 balls, 0.5 mm pitch


Advanced software features

  • AlwaysLocate? advanced location awareness technology

  • EPO?/HotStill? orbit prediction

  • EASY? self-generated orbit prediction

  • Supports logger function


RF configuration

  • SoC, integrated in single chip with CMOS process


Reference oscillator

  • TCXO Frequency 16.368 MHz, 12.6 ~ 40 MHz

  • TCXO Frequency variation: ±2.5 ppm

  • Crystal Frequency: 26 MHz, 12.6 ~ 40.0 MHz

  • Crystal Frequency accuracy: ±10 ppm


Pulse-per-second (PPS) GPS time reference

  • Adjustable duty cycle

  • Typical accuracy: ±10 ns

Power scheme

  • 1.8V SMPS built-in SoC

  • Direct lithium battery connection (2.8V ~ 4.3V)

  • Self build 1.1V RTC LDO, 1.1V core LDO, and 2.8V TCXO LSO


Built-in reset controller

  • No external reset control IC needed


Internal real-time clock (RTC)

  • 32.768KHz ±20 ppm crystal

  • 1.1 volts RTC output

  • Supports external pin to wake up MT3333


Serial interface

  • 3 UARTs

  • SPI/I2C

  • GPIO interface (up to 15 pins)


Sensitivities

  • Acquisition: -148 dBm (cold) / -163 dBm(hot)

  • Tracking: -165 dBm


Power consumption (GPS+GLONASS)

  • Acquisition: 37 mW

  • Tracking: 27 mW

  • AlwaysLocate?: 3.0 mW


Slim hardware design

  • 9 passive external components

  • Single RF Front-End for Multi-GNSS frequency bands


Compatibility

  • Pin-to-pin compatible with MT3339/MT3337