EVB72015-315-ASK-A

Manufacturer Part NumberEVB72015-315-ASK-A
Description433MHz FSK/ASK Transmitter Evaluation Board Description
ManufacturerMELEXIS [Melexis Microelectronic Systems]
EVB72015-315-ASK-A datasheet
 
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Features
! Fully integrated PLL-stabilized VCO
! Frequency range from 380 MHz to 450 MHz
! Single-ended RF output
! FSK through crystal pulling allows modulation
from DC to 40 kbit/s
! High FSK deviation possible for wideband data
transmission
! ASK achieved by on/off keying of internal
power amplifier up to 40 kbit/s
! Wide power supply range from 1.95 V to 5.5 V
! Very low standby current
Ordering Information
Part No. (see paragraph 6)
EVB72015-433-FSK-A
Note 1: EVB default population is FSK, ASK modifications according to section 3.1 and 4.1.
Note 2: EVB72015 is applicable for devices TH72015, TH72011 and TH72012.
Application Examples
! General digital data transmission
! Tire Pressure Monitoring Systems (TPMS)
! Remote Keyless Entry (RKE)
! Wireless access control
! Alarm and security systems
! Garage door openers
! Remote Controls
! Home and building automation
! Low-power telemetry systems
General Description
The TH72015 evaluation board is designed to demonstrate the performance of the transmitter IC with an
on-board loop antenna. This board allows the user to setup an RF transmitter very easily. Alternatively a
50 Ohm connector board can be requested.
39012 72015 01
Rev. 007
433MHz FSK/ASK Transmitter
Evaluation Board Description
! On-chip low voltage detector
! High over-all frequency accuracy
! FSK deviation and center frequency independ-
ently adjustable
! Adjustable output power range from
-12 dBm to +10 dBm (at connector board)
! Adjustable effective radiated power (ERP) range
from -24 dBm to -2 dBm (at antenna board)
! Adjustable current consumption from
3.4 mA to 10.6 mA
! Conforms to EN 300 220 and similar standards
EVB72015-433-FSK-C (on request)
Evaluation Board Example
Page 1 of 14
EVB72015
EVB Description
June/07

EVB72015-315-ASK-A Summary of contents

  • Page 1

    ... Very low standby current Ordering Information Part No. (see paragraph 6) EVB72015-433-FSK-A Note 1: EVB default population is FSK, ASK modifications according to section 3.1 and 4.1. Note 2: EVB72015 is applicable for devices TH72015, TH72011 and TH72012. Application Examples ! General digital data transmission ! Tire Pressure Monitoring Systems (TPMS) ! Remote Keyless Entry (RKE) ...

  • Page 2

    ... Board Connection........................................................................................................... 10 5 Evaluation Board Layouts .......................................................................................11 5.1 Antenna Board................................................................................................................ 11 5.2 PCB Loop Antenna Dimensions ..................................................................................... 11 5.3 Connector Board ............................................................................................................ 12 6 Board Variants..........................................................................................................12 7 Package Description ................................................................................................13 7.1 Soldering Information ..................................................................................................... 13 7.2 Recommended PCB Footprints ...................................................................................... 13 8 Disclaimer .................................................................................................................14 39012 72015 01 Rev. 007 433MHz FSK/ASK Transmitter Evaluation Board Description Page EVB72015 EVB Description June/07 ...

  • Page 3

    ... Rev. 007 433MHz FSK/ASK Transmitter Evaluation Board Description RPS PSEL VCC 10 PLL 32 PFD XBUF VCO CP 7 VEE Block diagram with external components Page EVB72015 can be adjusted in out ASKDTA 6 1 antenna 8 OUT matching PA network low voltage detector 9 VEE EVB Description ...

  • Page 4

    ... FSKDTA given load f max min CX1 CRO CX1+CRO Fig. 3: Crystal pulling characteristic Page EVB72015 VCC ROI XTAL FSKSW CX2 CX1 VEE Description - Δf (FSK switch is closed min c + Δf (FSK switch is open max c XTAL ...

  • Page 5

    ... Evaluation Board Description ASKDTA 0 Power amplifier is turned off Power amplifier is turned on (according 1 to the selected output power step) RPS PSEL ASKDTA & & & Fig. 4: Block diagram of output power control circuitry Page EVB72015 Description & & OUT EVB Description June/07 ...

  • Page 6

    ... After successful PLL lock, the LOCK signal turns on the power amplifier, on high ENTX low high LOCK low high ASKDTA low t Timing diagrams for FSK and ASK modulation Page EVB72015 Mode Description TX standby TX disabled TX active TX enable EVB Description June/07 , the t ...

  • Page 7

    ... pF pF max ±10% ROI coupling capacitor, only required for external reference frequency input Page EVB72015 PCB loop antenna CM2 CM1 CB1 RPS ...

  • Page 8

    ... CM2 CM1 RPS 10 6 72015 2 5 CX2 CB0 CX1 EVB720X5_ANT_L (2) Board size Page EVB72015 External reference frequency input Mode control pin (see section 2.7) Several ground pins EVB Description June/07 ...

  • Page 9

    ... pF pF max ±10% ROI coupling capacitor, only required for external reference frequency input Page EVB72015 OUT CM2 LM CM3 CM1 LT CB1 RPS 3 ...

  • Page 10

    ... Evaluation Board Description CM2 CM1 CM3 72015 2 5 CX2 CX1 XTAL CB0 Board size ENTX Page EVB72015 External reference frequency input Mode control pin (see section 2.7) Several ground pins EVB Description June/07 ...

  • Page 11

    ... PCB top view 5.2 PCB Loop Antenna Dimensions Fig. 8: Circular loop Loop Dimension 39012 72015 01 Rev. 007 433MHz FSK/ASK Transmitter Evaluation Board Description EVB720X5_ANT_L (2) PCB bottom view Fig 14 Page EVB72015 Square loop equivalent EVB Description June/07 ...

  • Page 12

    ... Note: available EVB setups 39012 72015 01 Rev. 007 433MHz FSK/ASK Transmitter Evaluation Board Description PCB bottom view Modulation –FSK according to section 3.1 / 4.1 –ASK –FM Page EVB72015 Board Execution antenna version –A connector version –C EVB Description June/07 ...

  • Page 13

    ... Dimensions min 3.55 1.9 3.2 max 3.90 2.3 3.6 th all Dimensions in inch min 0.1398 0.0748 0.1260 0.0512 0.0098 0.0276 0.0591 max 0.1535 0.0906 0.1417 0.0669 0.0118 0.0394 0.0197 Fig. 11: PCB land pattern style Page EVB72015 D2 L 0.23 0.36 0.225x45° 0.3 0.18 0.50 0.5 0.30 0.0118 0.0071 0.0197 ...

  • Page 14

    ... Europe, Africa: Phone: +32 1367 0495 E-mail: sales_europe@melexis.com 39012 72015 01 Rev. 007 433MHz FSK/ASK Transmitter 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 EVB72015 Asia: Phone: +32 1367 0495 E-mail: sales_asia@melexis.com EVB Description June/07 ...