Description

The MAX2771 is a next-generation Global Navigation Satellite System (GNSS) receiver covering E5/L5, L2, E6, E1/L1 bands and GPS, GLONASS, Galileo, QZSS, IRNSS, and BeiDou navigation satellite systems on a single chip.Designed on Maxim’s advanced, low-power SiGe BiCMOS process technology, the MAX2771 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 filter, PGA, and multi-bit ADC, along with a fractional-N frequency synthesizer, and crystal oscillator. The total cascaded noise figure of this receiver is as low as 1.4dB.The MAX2771 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 GNSS RF receiver solution.The MAX2771 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 (fXTAL = 32MHz) accuracy while operating with any reference or crystal frequencies that are available in the host system. The ADC outputs CMOS logic levels with one or two quantized bits for both I and Q channels, or up to 3 quantized bits for the I channel. The on-chip ADCs can be bypassed and the analog I and Q signals output for sampling with external ADCs. An analog monitoring feature is provided that allows simultaneous output of the on-chip ADC samples and the I analog signal.The MAX2771 is packaged in a 5mm x 5mm, 28-pin, TQFN package with an exposed paddle.ApplicationsDigital Still Cameras and CamcordersLaptops and NetbooksLocation-Enabled Mobile HandsetsPNDs (Personal Navigation Devices)Software GPSSurveying EquipmentTelematics (Asset Tracking, Inventory Management) ● Marine/Avionics NavigationVehicle Tracking and Fleet Management