EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX2771 Multiband Universal GNSS Receiver General Description Benefits and Features The MAX2771 is a next-generation Global Navigation Multi-Constellation Support Satellite System (GNSS) receiver covering E5/L5, L2, GPS, Galileo, GLONASS, BeiDou, IRNSS, QZSS, E6, E1/L1 bands and GPS, GLONASS, Galileo, QZSS, SBAS IRNSS, and BeiDou navigation satellite systems on a Multiband Support single chip. L1, L2, L5, E1, E5, E6, B1, B2, B3 Designed on Maxims advanced, low-power SiGe BiCMOS Programmable IF Bandwidths of 2.5MHz, 4.2MHz, process technology, the MAX2771 offers the highest 8.7MHz, 16.4MHz, 23.4MHz, 36MHz performance and integration at a low cost. Incorporated Supports Wide-Band Carriers for Precision on the chip is the complete receiver chain, including Applications (e.g., GPS L5, Galileo E5) a dual-input LNA and mixer, followed by filter, PGA, and multi-bit ADC, along with a fractional-N frequency Operates in Low IF or Zero IF Mode synthesizer, and crystal oscillator. The total cascaded Programmable IF Center Frequency noise figure of this receiver is as low as 1.4dB. Fractional-N Synthesizer with Integrated VCO The MAX2771 completely eliminates the need for exter- Supports Wide Range of Reference Frequencies nal IF filters by implementing on-chip monolithic filters On-Chip LNAs to Support Multiple Bands and requires only a few external components to form a 1.4dB Cascaded Noise Figure and 110dB of complete, low-cost GNSS RF receiver solution. Cascaded Gain with Gain Control Range of 59dB The MAX2771 is the most flexible receiver on the from PGA market. The integrated delta-sigma fractional-N frequency Integrated Crystal Oscillator synthesizer allows programming of the IF frequency within a 30Hz (f = 32MHz) accuracy while operating with Supply Voltage Range: 2.7V to 3.3V XTAL any reference or crystal frequencies that are available in 28-Pin, RoHS-Compliant, Thin QFN Lead-Free the host system. The ADC outputs CMOS logic levels with Package (5mm x 5mm) 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 Ordering Information appears at end of data sheet. 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. Applications Location-Enabled Mobile Handsets PNDs (Personal Navigation Devices) Telematics (Asset Tracking, Inventory Management) Marine/Avionics Navigation Software GPS Laptops and Netbooks Surveying Equipment Digital Still Cameras and Camcorders Vehicle Tracking and Fleet Management 19-100378 Rev 0 7/18MAX2771 Multiband Universal GNSS Receiver Block Diagram 22 26 23 20 27 16 15 LANIN HI 19 LNA 12 I0 LNA MAX2771 LANOUT HI 24 13 I1 ADC MIXIN HI 25 FILTER 11 Q0 ADC NC 21 10 Q1 VCO LD 17 14 VCCADC 90 0 CLKOUT 4 18 SHDN PLL XTAL 3 9 CSN SPI 2 1 28 5 6 7 8 Maxim Integrated 2 www.maximintegrated.com VCCCP VCCRF CPOUT MIXIN LO VCCVCO LNAOUT LO ADC CLKIN LNAIN LO VCCD VCCIF SDATA ANAINOUT SCLK ANAIPOUT