19-ꢀ791; Rev 2; 6/1ꢀ
Universal GPS Receiver
MAX2769
General Description
Features
o GPS/GLONASS/Galileo Receivers
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.
o No External IF SAW or Discrete Filters Required
o Programmable IF Frequency
o Fractional-N Synthesizer with Integrated VCO
Supports Wide Range of Reference Frequencies
o Dual-Input Uncommitted LNA for Separate
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.
Passive and Active Antenna Inputs
o 1.4dB Cascade Noise Figure
o Integrated Crystal Oscillator
o Integrated Active Antenna Sensor
o 10mA Supply Current in Low-Power Mode
o 2.7V to 3.3V Supply Voltage
o Small, 28-Pin, RoHS-Compliant, Thin QFN Lead-
Free Package (5mm x 5mm)
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 com-
plete low-cost GPS receiver solution.
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 Thin QFN-EP*
Dice (In Wafer Form)
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 4ꢀ0z accuracy while operating with any refer-
ence or crystal frequencies that are available in the
host system. The integrated ADC outputs 1 or 2 quan-
tized bits for both I and Q channels, or up to 3 quan-
tized bits for the I channel. Output data is available
either at the CMOS logic or at the limited differential
logic levels.
MAX2769ETI+
MAX2769E/W
+Denotes a lead(Pb)-free/Ro0S-compliant package.
*EP = Exposed paddle.
Pin Configuration/Block Diagram
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.
21
20
19
18
17
16
15
14
VCCD
N.C.
22
23
24
25
26
27
28
Applications
VCCIF
VCCCP
CPOUT
13
12
11
MAX2769
Location-Enabled Mobile 0andsets
PNDs (Personal Navigation Devices)
PMPs (Personal Media Players)
PDAs (Personal Digital Assistants)
In-Vehicle Navigation Systems
IDLE
FILTER
LNA2
PGM
VCCVCO
VCO
LNA2
LNA1
10 CS
Telematics (Asset Tracking, Inventory
Management)
LNA1
9
8
SCLK
Recreational/Marine Navigation/Avionics
Software GPS
TSENS
SDATA
+
1
2
3
4
5
6
7
Laptops and Ultra-Mobile PCs
Digital Still Cameras and Camcorders
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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