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Melexis Microelectronic Systems
Melexis Microelectronic Systems

EVB71120 Datasheet Preview

EVB71120 Datasheet

300 to 930MHz Receiver Evaluation Board Description

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EVB71120 pdf
EVB71120
300 to 930MHz Receiver
Evaluation Board Description
Features
! Dual RF input for antenna space and frequency diversity, LNA cascading or differential feeding
! Fully integrated PLL-based synthesizer
! 2nd mixer with image rejection
! Reception of ASK or FSK modulated signals
! Wide operating voltage and temperature ranges
! Very low standby current consumption
! Low operating current consumption
www.DataSheet!!4U.cEIonmxteternrnaal lFISFKfildteerms o4d5u5lkaHtozror 10.7MHz
! Average or peak detection data slicer mode
! RSSI output with high dynamic range for RF level indication
! Output noise cancellation filter
! MCU clock output
! High over-all frequency accuracy
Ordering Information
Part No. (see paragraph 4)
EVB71120-315-C
EVB71120-433-C
EVB71120-868-C
EVB71120-915-C
RYNote 1: Peak detection mode, IF2 selection = 10.7MHz is default population.
IMINAApplication Examples
L! General digital and analog RF receivers
Eat 300 to 930MHz
R! Tire pressure monitoring systems (TPMS)
P! Remote keyless entry (RKE)
! Low power telemetry systems
! Alarm and security systems
! Active RFID tags
! Remote controls
! Garage door openers
! Home and building automation
General Description
The MLX71120 is a multi-band, single-channel RF receiver based on a double-conversion super-heterodyne
architecture. It can receive FSK and ASK modulated signals. The IC is designed for general purpose
applications for example in the European bands at 433MHz and 868MHz or for similar applications in North
America or Asia, e.g. at 315MHz or 915MHz. It is also well-suited for narrow-band applications according to
the ARIB STD-T67 standard in the frequency range 426MHz to 470MHz.
The receiver’s extended temperature and supply voltage ranges make the device a perfect fit for automotive
or similar applications where harsh environmental conditions are expected.
39012 71120 01
Rev. 003
Page 1 of 18
EVB Description
Jan/08



Melexis Microelectronic Systems
Melexis Microelectronic Systems

EVB71120 Datasheet Preview

EVB71120 Datasheet

300 to 930MHz Receiver Evaluation Board Description

No Preview Available !

EVB71120 pdf
EVB71120
300 to 930MHz Receiver
Evaluation Board Description
Document Content
1 Theory of Operation ...................................................................................................3
1.1 General............................................................................................................................. 3
1.2 Technical Data Overview.................................................................................................. 3
1.3 Block Diagram .................................................................................................................. 4
1.4
www.DataSheet4U.com
1.5
Operating Modes .............................................................................................................. 5
Frequency Range ............................................................................................................. 5
1.6 LNA Selection................................................................................................................... 5
1.7 External IF2 Selection ...................................................................................................... 5
1.8 Demodulation Selection.................................................................................................... 5
1.9 Data Slicer ........................................................................................................................ 5
2 Frequency Planning ...................................................................................................6
2.1 Calculation of Frequency Settings.................................................................................... 7
2.2 Standard Frequency Plans ............................................................................................... 8
2.3 433/868MHz Frequency Diversity .................................................................................... 8
Y3 Dual-Channel Application Circuits for FSK & ASK Reception ...............................9
R3.1 Peak Detector Data Slicer ................................................................................................ 9
A3.1.1 Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 10.7MHz) .................. 10
IN3.1.2 Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 455kHz) .................... 11
3.2 Averaging Data Slicer Configured for-Bi Phase Codes .................................................. 12
IM3.2.1 Component Arrangement Top Side (Averaging Data Slicer, IF2 = 10.7MHz) .......................... 13
L3.3 Component List for Dual-Channel Application................................................................ 14
E3.4 PCB Layouts for Antenna Space Diversity ..................................................................... 15
PR4 Board Variants..........................................................................................................15
5 Package Description ................................................................................................16
5.1 Soldering Information ..................................................................................................... 16
6 Reliability Information .............................................................................................17
7 ESD Precautions ......................................................................................................17
8 Disclaimer .................................................................................................................18
39012 71120 01
Rev. 003
Page 2 of 18
EVB Description
Jan/08


Part Number EVB71120
Description 300 to 930MHz Receiver Evaluation Board Description
Maker Melexis Microelectronic Systems
Total Page 18 Pages
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