MAX2741 Datasheet | Maxim Integrated

Description Features - Supports All Popular Handset Reference Frequencies Up to 26MHz - 4.7d B Cascaded Noise Figure - 80d B Cascaded Gain - Tolerates -90d Bm In-Band Jammer - Tolerates +13d Bm CDMA Out-of-Band Jammer at Device Input - Integrated Synthesizer and VCO - Integrated 2- or 3-Bit ADC - 50d B IF AGC Range - Small 28-Pin Thin QFN Package - SPI™ Control Interface - Clock Output for Baseband Processor SPI is a trademark of Motorola, Inc. The MAX2741 L1-band GPS receiver IC offers a highperformance, pact solution for mobile handsets, PDAs, and automotive applications. Total voltage gain of 80d B and a 4.7d B cascaded noise figure can provide receiver sensitivity for applications requiring -185d BW for indoor tracking solutions. This 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 (1bit SIGN, 1- or 2-bit MAG selectable) samples the second IF and outputs the digitized signals to the baseband processor. The 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 30m A when active. It is offered in a 28-pin thin QFN package, and is specified for -40°C to +85°C at 3V. 28THIN Q PIN Ordering Information PART MAX2741ETI TEMP RANGE -40°C to +85°C PIN-PACKAGE 28 Thin QFN IFOUT+ IFOUT- IFIN+ VCC6 IFIN- N.C. 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 VCC4 VCC2 N.C. VCC1 Σ 33.6MHz N.C....