MAX2769 Datasheet, PDF (1/23 Pages) Maxim Integrated Products – Universal GPS Receiver

19-0791; Rev 2; 6/10
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Universal GPS Receiver
General Description
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 com-
plete 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 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.
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.
Applications
Location-Enabled Mobile Handsets
PNDs (Personal Navigation Devices)
PMPs (Personal Media Players)
PDAs (Personal Digital Assistants)
In-Vehicle Navigation Systems
Telematics (Asset Tracking, Inventory
Management)
Recreational/Marine Navigation/Avionics
Software GPS
Laptops and Ultra-Mobile PCs
Digital Still Cameras and Camcorders
Features
o GPS/GLONASS/Galileo Receivers
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
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)
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX2769ETI+
-40°C to +85°C 28 Thin QFN-EP*
MAX2769E/W
-40°C to +85°C Dice (In Wafer Form)
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
Pin Configuration/Block Diagram
21
20
19
18
17
16
15
N.C. 22
14 VCCD
VCCIF
23
IDLE
24
LNA2
25
PGM
26
MAX2769
FILTER
LNA2
13 VCCCP
12 ^CPOUT
VCO
11 VCCVCO
10 CS
LNA1
27
LNA1
9 SCLK
TSENS _{28 +}
8 SDATA
1
2
3
4
5
6
7
________________________________________________________________ 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.