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rev 1 april 2006 www.semtech.com 1 dp1203 868 / 915mhz rf modules (shielding removed for clarity) dp1203 ? c868 / c915 868 and 915mhz drop-in rf transceiver modules small form factor and direct digital interface modules general description the dp1203 is a 30mm x 18mm shielded radio transceiver module available for use in either the 868-870mhz or the 902-928mhz ism bands. the module is suitable for circuit applications which have to satisfy either european (etsi en300-220-1, en301-489-3) or the north american (fcc part 15.247, 15.249) regulatory standards. virtually no rf knowledge is required to use this rf module. wireless communication can be obtained with just the addition of a suitable antenna and a microcontroller. the dp1203 fulfils a wide range of application requirements, ranging from basic point-to- point communication to mo re complex multipoint process control functions. the module is suitable for surface mount reflow assembly. semtech provides basic firmware routines for controlling the module and typical applications. applications ? home automation and access control ? process and building control ? cable replacement key product features ? instant rf ? solder and use! ? no rf knowledge required ? small size 30mm x 18mm ? direct digital interface ? supply voltage 2.4v ? 3.6v ? minimum frequency synthesizer step size of 500hz ? maximum output power of +11dbm ? receiver sensitiv ity of -111dbm ? very high data rate up to 153.2kbps ? current consumption tx = 62ma @ 11dbm ? current consumption rx=14ma device options part number description packing method pin- packa ge dp1203c868 868-870mhz tape&reel board dp1203c915 902-928mhz tape&reel board
? semtech 2006 www.semtech.com 2 dp1203 868 / 915mhz rf modules table of contents 1 pin description ................................................................................................................ ........................... 3 2 electrical characteristics ..................................................................................................... ..................... 4 2.1 absolute maximum operating ranges.............................................................................................. ............. 4 2.2 specifications ................................................................................................................. .............................. 5 3 functional description ............ .................. .................. .................... ............... ......... ............. ..................... 6 4 serial control interface....................................................................................................... ....................... 7 5 operating modes ................................................................................................................ ........................ 8 5.1 standard sequence for switching between receiver and transmitter ........................................................... 9 6 typical application ............................................................................................................ ...................... 10 7 mechanical dimension........................................................................................................... .................. 11 8 packaging information.......................................................................................................... ................... 12
? semtech 2006 www.semtech.com 3 dp1203 868 / 915mhz rf modules pin description pin name i/o description 1 gnd in ground 2 rf in/out rf input / output terminal 3 gnd in ground 4 vddp vdd for power amplifier 5 vdda vdd for analog blocks 6 gnd ground 7 vdd supply voltage 8 /en in 3-wire interface communication enable signal 9 switch in/out receiver or transmitter mode selection 10 gnd in ground 11 gnd in ground 12 so out 3-wire serial data interface: data out 13 si in 3-wire serial data interface: data in 14 sck in 3-wire serial data interface: data clock 15 clkout out programmable reference clock output 16 dclk out receiver data clock 17 data in/out transmitter data input or receiver data output 18 datain in transmitter data input 19 pattern out receiver pattern recognition output 20 rx in antenna switch rx select 21 tx in antenna switch tx select
? semtech 2006 www.semtech.com 4 dp1203 868 / 915mhz rf modules electrical characteristics 1.1 absolute maximum operating ranges description min max unit supply voltage 2.4 3.6 v operating temperature -40 +85 o c storage temperature -55 125 o c soldering temperature (max 15 sec) 260 o c caution: esd sensitive device. precaution should be taken when handling the device in order to prevent permanent damage life support policy and use in safety critical applications semtech products are not designed, intended, authorized or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. inclusion of semtech products in such applications is understood to be undertaken solely at the customer?s own risk.
? semtech 2006 www.semtech.com 5 dp1203 868 / 915mhz rf modules 1.2 specifications tamb = 25 c; vdd = 3.3v, frequency deviation, f = 55 khz, bit-rate, dr = 4.8kbps pseudo-random bit sequence unless otherwise specified. symbol parameter conditi ons min typ max units f synth synthesizer frequency range dp1203c868 868 - 870 mhz dp1203c915 902 - 928 mhz idd sl sleep mode supply current 0.2 1 ua idd st standby mode supply current 39 mhz running 0.85 1.1 ma idd rx rx mode supply current 14 17 ma idd tx tx mode supply current p rf = 5 dbm 33 45 ma p rf = 11dbm 62 75 ma rfs rf sensitivity dr = 4.8 kbps / ber = 0.1% -111 -108 dbm f frequency deviation programmable 1 - 255 khz dr bit rate programmable 1.2 - 152.3 kb/s p rf rf output power programmable. p rfmax 8 11 - dbm t tx transmitter wake-up time from oscillator enabled - 200 250 us t rx receiver baseband wake up time from oscillator enabled - 1.5 1.8 ms t xtal quartz oscillator wake up time - - 1 ms f xtal quartz oscillator frequency fundamental mode osc. 39 mhz v ih digital input level high % vdd 75 - - % v il digital input level low % vdd - - 25 % v oh digital output level high % vdd 75 - - % v ol digital output level low % vdd - - 25 %
? semtech 2006 www.semtech.com 6 dp1203 868 / 915mhz rf modules functional description the dp1203 is a cost effective high performance radio transceiver module designed for the wireless transmission of digital information over distances of >500 meters in free space. the module is based on the rf transceiver circuit from semtech, the xe1203. for more information on the xe1203, please refer to the semtech web site. all high frequency circuits and the 39mhz reference crystal are enclosed inside a shielding can. the module incorporates an antenna switch driven by two external pins (rx and tx), and a saw filter placed between the antenna port (rf in/out). the switch provides a superior margin to satisfy the european or the north american regulatory standards. pa matching network lnapa matching network
? semtech 2006 www.semtech.com 7 dp1203 868 / 915mhz rf modules serial control interface a 3-wire bi-directional bus (sck, si, so) is used to control the dp1203. the output signal, so, is provided by the dp1203 in opposition to the sck and si which need to be provided by the external application as an 8-bit microcontroller. an access read or write with the xe1203 is possible only when the enable signal is active (active low). for more information about the 3-wire bus, please refer to the xe1203 datasheet chapter; interface definition, principles of operation . write sequence into configuration register read sequence of configuration register
? semtech 2006 www.semtech.com 8 dp1203 868 / 915mhz rf modules operating modes the dp1203 has 2 main operating modes (mode 1, mode 2); each mode is subdivided into 4 modes illustrated in the table below. the switching between mode1 and mode 2 can be done either through the 3-wire bus (chip_config register) or by using the pin switch. the selection depends on the switch_ext which is a xe1203 register. switch_ext bit 3, address 00010 chip_config bit 0, address 00000 switch (pin) mode selected 0 0 set in output - ?1? dp1203 is in transmitter - ?0? dp1203 other modes mode 1 bit 7-6, address 00110 - 0 0 : sleep mode - 0 1 : standby mode - 1 0 : receiver mode - 1 1 : transmitter mode 0 1 set in output - ?1? dp1203 is in transmitter - ?0? dp1203 other modes mode 2 bit 7-6, address 01001 - 0 0 : sleep mode - 0 1 : standby mode - 1 0 : receiver mode - 1 1 : transmitter mode 1 x 0 mode 1 bit 7-6, address 00110 - 0 0 : sleep mode - 0 1 : standby mode - 1 0 : receiver mode - 1 1 : transmitter mode 1 x 1 mode 2 bit 7-6, address 01001 - 0 0 : sleep mode - 0 1 : standby mode - 1 0 : receiver mode - 1 1 : transmitter mode for more information about the modes of operation, please refer to the xe1203 datasheet on the semtech website.
? semtech 2006 www.semtech.com 9 dp1203 868 / 915mhz rf modules 1.3 standard sequence for switching between receiver and transmitter the drop-in module dp1203 is able to switch between any configuration by using the 3-wire bus or by using the pin switch. this section describes the switching sequence from mode 1 to mode 2. switching sequence by using the 3-wire bus switch_ext = 0 (bit 3, address 00010) switching sequence by pad switch switch_ext = 1 (bit 3, address 00010)
? semtech 2006 www.semtech.com 10 dp1203 868 / 915mhz rf modules typical application the schematic below shows the dp1203 interfaced with a semetch's microcontroller xe8806a. in this typical application, the pad switch is used as an input and the two signals tx and rx are controlled directly by the microcontroller. xe88lc06a bit jockey tm
? semtech 2006 www.semtech.com 11 dp1203 868 / 915mhz rf modules mechanical dimensions the following diagram shows the physical footprint and dimensions of the dp1203 drop-in module, which should be implemented on the mother board.
? semtech 2006 www.semtech.com 12 dp1203 868 / 915mhz rf modules packaging information
? semtech 2006 www.semtech.com 13 dp1203 868 / 915mhz rf modules . contact information ? semtech 2006 all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. t he information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. semtech. assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range. semtech products are not designed, intended, authorized or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. inclusion of semtech products in such applications is understood to be undertaken solely at the customer?s own risk. should a customer purchase or use semtech products for any such unauthorized application, the customer shall indemnify and hold semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. semtech corporation wireless and sensing products division 200 flynn road, camarillo, ca 93012 phone (805) 498-2111 fax : (805) 498-3804

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