EVB71120 Melexis Company, EVB71120 Datasheet

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EVB71120

Manufacturer Part Number
EVB71120
Description
Evaluation Board For Mlx71120
Manufacturer
Melexis Company
Datasheet
Features
! Dual RF input for antenna space and frequency diversity, LNA cascading or differential feeding
! Fully integrated PLL-based synthesizer
! 2
! Reception of ASK or FSK modulated signals
! Wide operating voltage and temperature ranges
! Very low standby current consumption
! Low operating current consumption
! External IF filters 455kHz or 10.7MHz
! Internal FSK demodulator
! 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
Note 1: Peak detection mode, IF2 selection = 10.7MHz is default population.
Application Examples
! General digital and analog RF receivers
! Tire pressure monitoring systems (TPMS)
! 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
at 300 to 930MHz
nd
mixer with image rejection
Page 1 of 18
Evaluation Board Description
EVB71120-868-C
EVB71120-915-C
300 to 930MHz Receiver
EVB71120
EVB Description
Jan/08

Related parts for EVB71120

EVB71120 Summary of contents

Page 1

... 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. 003 300 to 930MHz Receiver Evaluation Board Description EVB71120-868-C EVB71120-915-C Page EVB71120 EVB Description Jan/08 ...

Page 2

... Component List for Dual-Channel Application................................................................ 14 3.4 PCB Layouts for Antenna Space Diversity ..................................................................... 15 4 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. 003 300 to 930MHz Receiver Evaluation Board Description Page EVB71120 EVB Description Jan/08 ...

Page 3

... Spurious emission: < -54dBm ! Linear RSSI range: > 70dB ! Crystal reference frequency 27MHz ! MCU clock frequency: 2.0 to 3.4 -3 315 MHz 433 MHz -109dBm -108dBm -114dBm -112dBm -113dBm -113dBm Page EVB71120 868 MHz 915 MHz -106dBm -104dBm -111dBm -109dBm -111dBm -109dBm EVB Description Jan/08 ...

Page 4

... MIX2 IFA LO2 N1 N2 PFD counter counter VCO Fig. 1: MLX71120 block diagram Page EVB71120 300 to 930MHz Receiver 100k 100k DFO OA1 ASK 18 FSK SW1 PKDET+ 20 PDP FSK DEMOD PKDET _ PDN SW2 DTAO OA2 NCF ...

Page 5

... Input frequency range 610 to 930MHz Description LNA1 active, LNA2 shutdown LNA1 and LNA2 active LNA1 shutdown, LNA2 active /2 in this case). CC Description IF2 = 455 kHz IF2 = 10.7 MHz Description ASK demodulation FSK demodulation Description Averaging detection mode Peak detection mode Page EVB71120 EVB Description Jan/08 ...

Page 6

... RF f LO2 LO1 . RO ⋅ LO2 nd mixer at pin MIXO is set according to the IF2 (please refer to pin Page EVB71120 300 to 930MHz Receiver (low-high) and f (low-low (high-low) are entering the second RF f LO2 ⋅ LO2 ...

Page 7

... IF2 1 RF IF2 + LO1 + 4(f 0.455MHz ) 2(f 0.455MHz ) LO1 + 4(f 10.7MHz ) 2(f 10.7MHz ) RF 3 Page EVB71120 300 to 930MHz Receiver LO2 IF2 RF − IF2 ...

Page 8

... LO1 LO2 434.2667 108.5667 592.8267 148.2067 586.0000 293.0000 617.1333 308.5667 f [MHz] f [MHz] IF1 LO1 145.2483 579.17 289.1300 579.17 Page EVB71120 300 to 930MHz Receiver [MHz] f [MHz] RO 17.525277 24.131944 24.132083 25.429305 [MHz] f [MHz] RO 18.094444 24.701111 24.416666 25.713888 f [MHz] f [MHz] LO2 RO 144.7925 24 ...

Page 9

... LNAO2 SLC DFO 7 VEE LNAI2 DF1 CF2 CIF CB1 CERFIL Fig. 3: Circuit schematic Page EVB71120 300 to 930MHz Receiver RSSI 7 8 XTAL Ω 0 jumper pads CX CRS 24 23 CF3 22 21 CB2 CP2 20 CP1 VCC 19 18 CB0 CF1 ...

Page 10

... Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 10.7MHz) 39012 71120 01 Rev. 003 Evaluation Board Description Fig. 4: PCB top-side view Page EVB71120 300 to 930MHz Receiver EVB Description Jan/08 ...

Page 11

... Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 455kHz) 39012 71120 01 Rev. 003 Evaluation Board Description Fig. 5: PCB top-side view Page EVB71120 300 to 930MHz Receiver EVB Description Jan/08 ...

Page 12

... LNAO2 SLC DFO 7 VEE LNAI2 DF1 CF2 CIF CB1 CERFIL Fig. 6: Circuit schematic Page EVB71120 300 to 930MHz Receiver RSSI 7 8 XTAL Ω 0 jumper pads CX CRS 24 23 CF3 22 21 CB2 20 CSL VCC 19 18 CB0 CF1 17 VCC ...

Page 13

... Component Arrangement Top Side (Averaging Data Slicer, IF2 = 10.7MHz) 39012 71120 01 Rev. 003 Evaluation Board Description Fig. 7: PCB top-side view Page EVB71120 300 to 930MHz Receiver EVB Description Jan/08 ...

Page 14

... MHz MHz MHz 24.132083 25.429306 MHz MHz Page EVB71120 300 to 930MHz Receiver Tol. Description ±5% LNA input filtering capacitor ±5% LNA output tank capacitor ±5% MIX1 positive input matching capacitor ±5% MIX1 negative input matching capacitor ± ...

Page 15

... Note: available EVB setups 39012 71120 01 Rev. 003 Evaluation Board Description PCB bottom view Modulation according to section 3.1 / 3.2 –FSK according to section 3.1 / 3.2 –ASK –FM Page EVB71120 300 to 930MHz Receiver Board Execution antenna version –A connector version –C EVB Description Jan/08 ...

Page 16

... should not be connected to the PCB. Fig. 8: 32L QFN 5x5 Quad 3.00 3.00 0.80 0 3.25 3.25 1.00 0.05 0.118 0.118 0.0315 0 0.128 0.128 0.0393 0.002 Page EVB71120 300 to 930MHz Receiver 0.3 0.18 0.20 0.50 0.5 0.30 0.0118 0.0071 0.0079 0.0197 0.0197 0.0118 EVB Description Jan/08 ...

Page 17

... Use of Certain Hazardous Substances) please visit the quality page on our website: http://www.melexis.com/quality_leadfree.aspx 7 ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 39012 71120 01 Rev. 003 300 to 930MHz Receiver Evaluation Board Description Page EVB71120 EVB Description Jan/08 ...

Page 18

... Europe, Africa: Phone: +32 1367 0495 E-mail: sales_europe@melexis.com 39012 71120 01 Rev. 003 Evaluation Board Description www.melexis.com Americas: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com ISO/TS 16949 and ISO14001 Certified Page EVB71120 300 to 930MHz Receiver Asia: Phone: +32 1367 0495 E-mail: sales_asia@melexis.com EVB Description Jan/08 ...

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