Maxim Integrated MAX2771 General Description Manual

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MAX2771

General 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 exter-
nal 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 (f = 32MHz) accuracy while operating with
XTAL
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.

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; 7/18
Multiband Universal GNSS Receiver

Benefits and Features

● Multi-Constellation Support
• GPS, Galileo, GLONASS, BeiDou, IRNSS, QZSS,
SBAS
● Multiband Support
• L1, L2, L5, E1, E5, E6, B1, B2, B3
● Programmable IF Bandwidths of 2.5MHz, 4.2MHz,
8.7MHz, 16.4MHz, 23.4MHz, 36MHz
• Supports Wide-Band Carriers for Precision
Applications (e.g., GPS L5, Galileo E5)
● Operates in Low IF or Zero IF Mode
• Programmable IF Center Frequency
● Fractional-N Synthesizer with Integrated VCO
Supports Wide Range of Reference Frequencies
● On-Chip LNAs to Support Multiple Bands
● 1.4dB Cascaded Noise Figure and 110dB of
Cascaded Gain with Gain Control Range of 59dB
from PGA
● Integrated Crystal Oscillator
● Supply Voltage Range: 2.7V to 3.3V
● 28-Pin, RoHS-Compliant, Thin QFN Lead-Free
Package (5mm x 5mm)
Ordering Information appears at end of data sheet.
EVALUATION KIT AVAILABLE