MAX2741

19-3559; Rev 0; 1/05 KIT ATION EVALU LE B A IL A AV www.DataSheet4U.com Integrated L1-Band GPS Receiver General 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 SPI is a trademark of Motorola, Inc. MAX2741 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 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 30mA when active. It is offered in a 28-pin thin QFN packa...