The MAX2769 is the industry's first global navigation
satellite system (GNSS) receiver covering GPS,
GLONASS*, and Galileo navigation satellite systems on a
single chip. This single-conversion, low-IF GNSS receiver
is designed to provide high performance for a wide range
of consumer applications, including mobile handsets.
Designed on Maxim's advanced, low-power SiGe
BiCMOS process technology, the MAX2769 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 the image-rejected filter, PGA, VCO, fractional-N
frequency synthesizer, crystal oscillator, and a multibit
ADC. The total cascaded noise figure of this receiver is
as low as 1.4dB.
The MAX2769 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 GPS receiver solution.
The MAX2769 is the most flexible receiver on the
market. The integrated delta-sigma fractional-N frequency
synthesizer allows programming of the IF frequency
within a ±40Hz accuracy while operating with any reference
or crystal frequencies that are available in the
host system. The integrated ADC outputs 1 or 2 quantized
bits for both I and Q channels, or up to 3 quantized
bits for the I channel. Output data is available
either at the CMOS logic or at the limited differential
logic levels.
The MAX2769 is packaged in a compact 5mm x 5mm,
28-pin thin QFN package with an exposed paddle. The
part is also available in die form. Contact the factory for
further information.
Key Features
Applications/Uses
GPS/GLONASS/Galileo Receivers
No External IF SAW or Discrete Filters Required
Programmable IF Frequency
Fractional-N Synthesizer with Integrated VCO Supports Wide Range of Reference Frequencies
Dual-Input Uncommitted LNA for Separate Passive and Active Antenna Inputs
1.4dB Cascade Noise Figure
Integrated Crystal Oscillator
Integrated Temperature Sensor
Integrated Active Antenna Sensor
10mA Supply Current in Low-Power Mode
2.7V to 3.3V Supply Voltage
Small, 28-Pin, RoHS-Compliant, Thin QFN Lead-Free Package (5mm x 5mm)
