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MAX2741

Features: ·Supports All Popular Handset Reference Frequencies Up to 26MHz·4.7dB Cascaded Noise Figure·80dB Cascaded Gain·Tolerates -90dBm In-Band Jammer·Tolerates +13dBm CDMA Out-of-Band Jammer at Device Input·Integrated Synthesizer and VCO·Integrated 2- or 3-Bit ADC·50dB IF AGC Range·Small 28-Pin...

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SeekIC No. : 004409740 Detail

MAX2741: Features: ·Supports All Popular Handset Reference Frequencies Up to 26MHz·4.7dB Cascaded Noise Figure·80dB Cascaded Gain·Tolerates -90dBm In-Band Jammer·Tolerates +13dBm CDMA Out-of-Band Jammer at D...

MAX2741 Data Sheet

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Part Number:
MAX2741
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
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Product Details

Description



Features:

·Supports All Popular Handset Reference Frequencies Up to 26MHz
·4.7dB Cascaded Noise Figure
·80dB Cascaded Gain
·Tolerates -90dBm In-Band Jammer
·Tolerates +13dBm CDMA Out-of-Band Jammer at Device Input
·Integrated Synthesizer and VCO
·Integrated 2- or 3-Bit ADC
·50dB IF AGC Range
·Small 28-Pin Thin QFN Package
·SPI™ Control Interface
·Clock Output for Baseband Processor


Application

·In-Vehicle Navigation Systems (IVNS)
·Telematics (Vehicle and Asset Tracking,
·Inventory Management)
·Automotive Security
·Emergency Response Systems
·Emergency Road-Side Assistance
·Location-Based Services/Internet (PDAs)
·Digital Cameras/Camcorders
·Recreational Handhelds/Walkie-Talkies
·Geographical Information Systems (GIS)
·Consumer Electronics (Location-Based Games)
·Precision Timing


Pinout

Connection Diagram


Specifications

VCC Pins to GND ....................................................-0.3V to +3.3V
VCC Pins to Each Other .........................................-0.3V to +0.3V
FILT to GND..................................................-0.3V to (VCC + 0.3V)
CMOS Inputs to GND (SHDN, SCLK,
CS, SDI).....................................................+0.3V to (VCC + 0.3V)
CMOS Outputs to GND (CLKOUT,
GPSIF_, SDO)..............................................-0.3V to (VCC + 0.3V)
RFIN to GND................................................-0.3V to (VCC + 0.3V)
First IF Filter I/O to GND (IFOUT±, IFIN±)..-0.3V to (VCC + 0.3V)
Crystal Inputs to GND (XTAL, REFCLK)........-0.3V to (VCC + 0.3V)
Maximum RF Input Power....................................................0dBm
Continuous Power Dissipation (TA = +85°C)
28-Pin Thin QFN (derate 20.8mW/°C above +70°C) .1000mW
Operating Temperature Range .......................-40°C to +85°C
Junction Temperature....................................................+150°C
Storage Temperature Range .........................-65°C to +160°C
Lead Temperature (soldering, 10s) ..............................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.


Description

The MAX2741 L1-band GPS receiver IC offers a highperformance, compact solution for mobile handsets, PDAs, and automotive applications. Total voltage gain of 80dB and a 4.7dB cascaded noise figure can provide receiver sensitivity for applications requiring -185dBW for indoor tracking solutions.

This MAX2741 dual-conversion receiver downconverts the 1575.42MHz GPS signal to a 37.38MHz first IF, and then a 3.78MHz second IF. An integrated 2- or 3-bit ADC (1- bit SIGN, 1- or 2-bit MAG selectable) samples the second IF and outputs the digitized signals to the baseband processor.

The MAX2741 integrated synthesizer offers the flexibility in frequency planning to allow a single board design to be employed for reference frequencies from 2MHz to 26MHz. The integrated reference oscillator allows either TCXO or crystal operation. The receiver runs from a 2.7V to 3.0V supply, and draws only 30mA when active. It is offered in a 28-pin thin QFN package, and is specified for -40°C to +85°C at 3V.




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