MAX2742ECM+D Maxim Integrated Products, MAX2742ECM+D Datasheet

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MAX2742ECM+D

Manufacturer Part Number
MAX2742ECM+D
Description
RF Receiver Single-Chip Global P ositioning System Re
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX2742ECM+D

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX2742 complete single-chip global positioning
system (GPS) RF front-end utilizes many innovative and
leading-edge RF CMOS design techniques. This high-
performance, state-of-the-art device consumes extreme-
ly low power and eliminates the need for costly SAW
and bulky discrete IF filters. The MAX2742 incorporates
a fully integrated low-noise amplifier (LNA) and mixer, IF
section, digital sampler, and local oscillator synthesizer.
The intended input signal for the MAX2742 is the L1
GPS signal 1.57542GHz. This device supports high-
accuracy output quantization, which delivers the best
performance obtainable for the GPS receiver. The
power consumption of the MAX2742 is as low as 32mW
at a +2.4V supply.
The MAX2742 is available in a space-saving 48-pin
TQFP package and is specified for the extended (-40°C
to +85°C) temperature range.
19-3469; Rev 2; 4/08
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.
In-Vehicle Navigation Systems (IVNS)
Location-Based Services (PDAs and
Accessories)
Recreational Handheld/Walkie Talkies
Geographical Information Systems (GISs)
Telematics (Vehicle, Asset Tracking, and
Inventory Management)
Emergency Roadside Assistance
Emergency Response Systems
Digital Cameras/Camcorders
Consumer Electronics
________________________________________________________________ Maxim Integrated Products
Single-Chip Global Positioning System
General Description
Applications
♦ Complete Single-Chip GPS Front-End Receiver
♦ Single-Ended or Differential Outputs at 1.023MHz
♦ Low 4.5dB Typical Noise Figure
♦ No External IF SAW or Discrete Filters Required
♦ Very Low 32mW Power Consumption at +2.4V
♦ Wide +2.4V to +3.6V Operational Supply Voltage
♦ Extended -40°C to +85°C Temperature Range
* EP = Exposed paddle.
+ Denotes lead-free package.
MAX2742ECM
MAX2742ECM+
RBIAS
CBIAS
IFSEL
Range
GND
GND
RFIN
GND
GND
V
V
V
I.C.
DD
DD
DD
PART
10
11
12
1
2
3
4
5
6
7
8
9
48
13
Receiver Front-End
LNA
BIAS
MAX2742
47
14
BUFFER
46
15
TCXO
45
16
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
44
17
Ordering Information
PFD
43
CP
DIV
18
Pin Configuration
VGA
42
19
Block Diagram/
41
20
AGC
40
21
COMP
CONTROL
BLOCK
39
22
PIN-PACKAGE
48 TQFP-EP*
48 TQFP-EP*
38
23
Features
37
24
36
35
34
33
32
31
30
29
28
27
26
25
I.C.
I.C.
I.C.
I.C.
V
DIN
GND
CLKOUT2
DOUT
I.C.
CLKOUT1
V
DD
DD
1

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MAX2742ECM+D Summary of contents

Page 1

... Inventory Management) Emergency Roadside Assistance Emergency Response Systems Digital Cameras/Camcorders Consumer Electronics ________________________________________________________________ Maxim Integrated Products 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. Receiver Front-End ♦ Complete Single-Chip GPS Front-End Receiver ♦ Single-Ended or Differential Outputs at 1.023MHz ♦ ...

Page 2

Single-Chip Global Positioning System Receiver Front-End ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +3.7V DD All Other Pins to GND.................................-0. LNA Input Power .......................................................+10dBm Continuous Power Dissipation (T = +70°C) A 48-Pin TQFP-EP (derate 12.5mW/°C above ...

Page 3

Single-Chip Global Positioning System AC ELECTRICAL CHARACTERISTICS (continued) (MAX2742 EV kit +2.4V to +3.6V unless otherwise noted.) PARAMETER SYNTHESIZER TCXO Input Frequency Fundamental frequency crystal Charge-Pump Current f OFFSET Phase Noise f OFFSET Comparison Frequency Spur ...

Page 4

Single-Chip Global Positioning System Receiver Front-End (MAX2742 EV kit +3V, and T = +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE +3. +2. +2.4V ...

Page 5

Single-Chip Global Positioning System PIN NAME External Bias Resistor. Connect a 100kΩ ±1% resistor in parallel with a 0.1µF capacitor in 1 RBIAS series with a 71kΩ resistor to GND. 2 CBIAS External Bias Capacitor. Connect a 0.1µF capacitor to ...

Page 6

Single-Chip Global Positioning System Receiver Front-End Detailed Description The RF input from the GPS antenna is fed through an LNA with a 24dB gain. The amplified signal is then fed to a mixer that downconverts the signal (1575.42MHz ...

Page 7

Single-Chip Global Positioning System RBIAS 1 CBIAS GND 5 GND 6 RFIN 7 GND 8 GND 9 IFSEL 10 I. Chip Information PROCESS: CMOS TRANSISTOR COUNT: 18443 _______________________________________________________________________________________ Receiver ...

Page 8

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 ___________________ Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc ...

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