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design note dn025 swra250a page 1 of 26 johanson technology matched balun filters for cc110x & cc111x by richard wallace keywords ? single component matched balun filter (433 mhz or 868 mhz or 915 mhz) ? matched balun filter with external lc filter (868 mhz and 915 mhz) ? optimized for compact designs ? 433, 868 and 915 mhz ism bands ? cc1100 ? cc1101 ? cc1110 ? cc1111 ? cc1150 1 introduction with the johanson technology (jti) matched balun filter component; the component count is significantly reduced whilst still obtaining the high radio performance desired. this document describes the jti matched chip balun filters that have been specifically designed for the cc110x and cc111x family of ics operating in the 433, 868 and 915 mhz ism bands. the existing matched filter balun component from jti required a single-pole external lc filter and a dc blocking capacitor; part number: 0896bm15a0001 [4] . this part is targeted towards a design that has to be compliant at 868 mhz and 915 mhz with the external lc filter and dc blocking cap (three external 0402 components required). with the new balun component family, only one component is required to achieve compliancy at 433 mhz [ 6.2 ] or 868 mhz [ 6.3 ] or 915 mhz [ 6.4 ]. i.e. no additional external components are required. it is important to note that the new matched baluns are optimized for a single ism frequency band. the three balun-filter parts are available [4] : 433 mhz [ 6.2 ] (part number: 0433bm15a0001), 868 mhz [ 6.3 ] (part number: 0868bm15c0001) and 915 mhz [ 6.4 ] (part number: 0915bm15a0001). all these parts share a common footprint. the size for the matched balun filter component is only 2.0 mm x 1.25 mm (eia 0805, metric 2012) therefore it is recommended for compact designs. all measurement results presented in this document are based on measurements performed on the cc1101 jti em rev 1.0 reference design [6] , shown in figure 1 . if the new matched filter balun is used on this board then the external components are not required. the comparison performance of the jti reference design and the discrete reference designs will be discussed in this document. figure 1. cc1101 868 / 915 mhz jti balun em
design note dn025 swra250a page 2 of 26 table of contents keywords....................................................................................................................... ....... 1 1 introduct ion............................................................................................................. 1 2 abbreviatio ns........................................................................................................... 2 3 reference design s avail able ........................................................................... 3 3.1 d iscrete r eference d esign .................................................................................. 3 3.2 v alue l ine r eference d esign ................................................................................ 4 3.3 jti m atched f ilter b alun r eference d esigns .................................................... 5 3.3.1 jti matched filter balun for 868 mhz and 915 mhz (dual band) ................................5 3.3.1.1 component placement ..................................................................................................6 3.3.1.2 layout...........................................................................................................................7 3.3.1.3 measurement results....................................................................................................9 3.3.1.3.1 sensitiv ity ..............................................................................................................9 3.3.1.3.2 output power and harmonics..............................................................................10 3.3.1.3.3 overview of harmonic emissi on regulatory requirements...............................11 3.3.1.3.4 radiated emissions..............................................................................................12 3.3.1.4 summary of measurements ........................................................................................13 3.3.2 jti matched filter balun for 433 mhz or 868 mhz or 915 mhz .................................14 3.3.2.1 jti matched filter balun 433 mhz............................................................................16 3.3.2.1.1 output power and harmonics..............................................................................16 3.3.2.2 jti matched filter balun 868 mhz............................................................................17 3.3.2.3 jti matched filter balun 915 mhz............................................................................18 3.3.2.3.1 output power and harmonics..............................................................................18 4 conclusio n .............................................................................................................. 20 5 reference s.............................................................................................................. 21 6 appendice s ............................................................................................................... 22 6.1 a ppendix a - 0896bm15a0001 d atasheet ........................................................... 22 6.2 a ppendix b - 0433bm15a0001 d atasheet ........................................................... 23 6.3 a ppendix c - 0868bm15c0001 d atasheet ........................................................... 24 6.4 a ppendix d - 0915bm15a0001 d atasheet ........................................................... 25 7 general info rmation .......................................................................................... 26 7.1 d ocument h istory ................................................................................................ 26 2 abbreviations dc direct current em evaluation module etsi european telecommunications standards institute fcc federal communications commission fr4 material type used for producing pcb ism industrial, scientific, medical jti johanson technology lc inductor (l) capacitor (c) configuration ml multi-layer inductor nm not mounted pcb printed circuit board soc system on chip srd short range devices ww wire-wound inductor
design note dn025 swra250a page 3 of 26 3 reference designs available there are basically three reference desi gns available for cc110x, cc111x and cc11xl; each reference design has its own particular advantage. 3.1 discrete reference design the traditional 868/915 mhz reference design for the cc110x and cc111x has been the discrete solution [8] shown in figure 2 ; 315/433 mhz reference design has been the discrete solution [9] shown in figure 3 . this design can use either mu lti-layer inductors or wire-wound inductors; when using wire-w ound inductors, this is the best reference design for performance . figure 2. discrete reference design for the cc110x and cc111x 868/915 mhz (no decoupling capacitors shown) figure 3. discrete reference design for the cc110x and cc111x 315/433 mhz (no decoupling capacitors shown)
design note dn025 swra250a page 4 of 26 3.2 valueline reference design the integrated inductor valueline reference designs offer the lowest possible cost. the schematics are similar to those shown in figure 2 and figure 3 with the exception that the inductors have been integrated into the pcb. this gives a cost advantage but also means that the reference design must be strictly followed by using the same pcb thickness otherwise the performance will change. the integrated inductor valueline reference designs have the lowest cost but are also the largest in size . figure 4. top layer integrated inductor valueline reference design for the cc110x and cc111x 868/915 mhz
design note dn025 swra250a page 5 of 26 3.3 jti matched filter balun reference designs 3.3.1 jti matched filter balun for 868 mhz and 915 mhz (dual band) johanson technology has developed a solution with a chip balun that is especially matched for the cc110x and cc111x chips. please refer to appendix a [ 6.1 ] for data sheet of the matched balun filter component (the full specif ication is available from the johanson technology web site [4] ). the jti matched balun filter solution [6] implemented on the cc1101 868/915 mhz jti balun reference design consists of the matched balun f ilter and an external lc filter which is valid for all cc110x and cc111x. the need of the lc filt er is discussed in more detail in section 3.3.1.3 in this document. figure 5. jti reference design for the cc110x and cc111x 868/915 mhz (no decoupling capacitors shown) referring to figure 5 , u121 is the jti matched balun filter 0896bm15a0001. inductor l122 is 5.6 nh and capacitor c123 is 1.8 pf; these two components form the lc filter. c124 is a dc blocking capacitor and should be npo type to minimize losses; recommended value of 100 pf. the dc block is only needed when there is a dc path in the antenna. recommended part numbers from johanson technology for t he inductor (l122) is l-07c5n6sv4 and the capacitor (cc123) is 500r07s1r8bv4.
design note dn025 swra250a page 6 of 26 3.3.1.1 component placement figure 6. component placement the component placement influences the rf perfo rmance. in the event that the reference design [6] can not be copied then it is important to position the inductor l122 so that the coupling effects to the matched balun filter u121 are minimized as much as possible. experiments with placing l122 in parallel to u121 showed that coupling was evident and the matched balun filter performance was not opt imum. keep the inductor l122 at 90 degrees to the balun as shown in figure 6 or position it on the left side of u121 to avoid coupling to pin 6 of u121.
design note dn025 swra250a page 7 of 26 3.3.1.2 layout the layout greatly influences the rf perform ance. ti recommends to always copy our reference design [6] as closely as possible. figure 7. layer 1 of cc1101 jti 868/915 mhz reference design layout the ground from the decoupling capacitors has been divided from the remaining ground on layer1. tests from the lab have proven that th is is not necessary and the ground can be solid as shown in figure 8 . as previously mentioned, the most important critical part of the layout is the positioning of the inductor l122 in order to minimize the coupling effect to the matched balun filter. in the event that the reference design [6] can not be copied then the routing from the rf pins rf_p & rf_n must be symmetrical to the matched balun filter component, u121. the length of the tracks should be kept to a minimu m and preferably the same length that is used in the reference design [6] . if this routing is not symmetr ical; then the output power will be reduced and the harmonics will increase. all component ground pads should have the ow n ground via which should be positioned as close as possible to the ground pad. when pos itioning the ground vias for the component pad grounds it is important to try to keep the retu rn path loop to ground as little as possible in order to prevent unnecessary radiated emissions.
design note dn025 swra250a page 8 of 26 figure 8. alternative grounding on layer 1 the routing in figure 8 is the same as figure 7 apart from the ground fill around the balun. figure 9. layer 2 of cc1101 jti 868/915 mhz reference design layout on the second layer; it is important to have a solid ground plane underneath the rf structure and to avoid any routing directly underneath t he rf. the power routing has been routed in a star formation and the power tracks must alwa ys be routed to the decoupling capacitor first; then from the decoupling capacitor to the pad of the cc1101.
design note dn025 swra250a page 9 of 26 3.3.1.3 measurement results all results presented in this chapter are based on measurements performed with cc1101 jti em rev 1.0 reference design board [6] . a minimum of six units have been measured in order to obtain an average result which is pres ented in this report. all measurement results presented are the average of each batch tested from typical devices. the output power and harmonics measurements we re performed with four different power patable settings: 0xc0 and 0xc2 for 10 dbm applications and 0x8e and 0x50 for 0 dbm applications. note: all values are in dbm if not otherwise stated. smartrf04 ? rf studio was used to configure the devices. the settings for the registers are the default settings used. 3.3.1.3.1 sensitivity freq. band 868 mhz 915 mhz data rate [kbaud] 1.2 38.4 250 500 1.2k 38.4 250 500 jti with lc ? 111.6 ? 103.6 ? 94.8 ? 87.2 ? 111.4 ? 103.2 ? 94.4 ? 87.3 discrete ml ? 111.0 ? 103.0 ? 94.0 ? 87.0 ? 111.0 ? 103.0 ? 94.0 ? 87.0 table 1. average sensitivity values obtained as can be seen from table 1 ; the jti reference design with lc has the same or better sensitivity than the discrete solution with multi-layer (ml) inductors. freq. band 868 mhz 915 mhz data rate [kbaud] 1.2 38.4 250 500 1.2k 38.4 250 500 jti no lc ? 111.4 ? 103.1 ? 94.4 ? 86.5 ? 111.3 ? 102.2 ? 93.8 ? 86.2 jti with lc ? 111.6 ? 103.6 ? 94.8 ? 87.2 ? 111.4 ? 103.2 ? 94.4 ? 87.3 difference ? 0.2 ? 0.5 ? 0.4 ? 0.7 ? 0.1 ? 0.9 ? 0.6 ? 1.1 table 2. difference in sensitivity values with and without lc filter as can be seen from table 1 and table 2 ; the sensitivity is same or better with the lc filter.
design note dn025 swra250a page 10 of 26 3.3.1.3.2 output power and harmonics 868 mhz (0896bm15a0001) 915 mhz (0896bm15a0001) jti with lc jti no lc etsi limit jti with lc jti no lc fcc limit fundamental c0 10.8 11.4 11.2 11.4 c2 10.0 10.7 10.4 10.7 8e 1.5 1.4 0.8 0.8 50 0.3 0.3 0.0 -0.1 2 nd harmonic c0 ? 28.9 ? 25.2 30 28.1 25.7 20 dbc c2 34.0 ? 29.7 30 32.9 30.1 20 dbc 8e 40.8 42.0 30 43.1 45.8 41.2 50 35.9 33.8 30 ? 37.2 ? 35.7 41.2 3 rd harmonic c0 48.3 42.3 30 49.4 ? 40.4 41.2 c2 48.6 42.7 30 49.9 ? 41.2 41.2 8e 55.4 53.4 30 56.3 52.8 41.2 50 55.1 53.2 30 56.1 53.1 41.2 4 th harmonic c0 48.5 ? 29.6 30 49.9 ? 30.2 41.2 c2 51.5 33.4 30 52.2 ? 33.7 41.2 8e 54.6 40.2 30 53.7 ? 37.8 41.2 50 55.5 42.5 30 54.8 ? 41.0 41.2 5 th harmonic c0 52.2 44.5 30 52.4 44.4 41.2 c2 52.6 44.8 30 52.6 45.0 41.2 8e 55.1 53.4 30 54.5 53.5 41.2 50 55.0 53.4 30 54.5 53.7 41.2 6 th harmonic c0 53.4 43.3 30 52.0 43.7 41.2 c2 53.5 46.4 30 52.1 46.7 41.2 8e 53.6 48.3 30 52.2 47.3 41.2 50 53.6 51.2 30 52.1 49.5 41.2 7 th harmonic c0 51.9 50.8 30 50.9 50.7 20 dbc c2 51.9 50.7 30 50.9 50.6 20 dbc 8e 51.9 52.0 30 50.8 50.9 41.2 50 51.9 52.0 30 50.9 51.0 41.2 8 th harmonic c0 49.4 47.6 30 52.6 48.5 41.2 c2 49.4 49.1 30 53.8 51.5 41.2 8e 49.4 48.9 30 54.0 51.7 41.2 50 49.3 49.5 30 54.6 54.0 41.2
design note dn025 swra250a page 11 of 26 9 th harmonic c0 ? 52.4 ? 52.4 ? 30 ? 52.6 ? 53.3 ? 41.2 c2 ? 52.4 ? 52.2 ? 30 ? 52.3 ? 53.2 ? 41.2 8e ? 52.6 ? 52.5 ? 30 ? 53.5 ? 53.6 ? 41.2 50 ? 52.6 ? 52.7 ? 30 ? 53.5 ? 53.6 ? 41.2 table 3. output power and conducted harmonic values obtained all values are in dbm unless stated. the values shown in red exceed the regulatory requirements. if the recommended values and conf iguration are followed as specified in table 5 then the regulatory requirements will be fulfilled. limit values shown in table 3 are taken from the etsi en 300 220 regulations for 868 mhz and fcc 15.247 for 915 mhz. 3.3.1.3.3 overview of harmonic emission regulatory requirements harmonic emission will depend on ground pl ane geometry, encapsulation etc. table 4 shows the fcc- and etsi limits. abov e 1 ghz, fcc allows the radiation to be up to 20 db above the limits given in table 4 , if duty cycling is being used. the second harmonic would only be an issue when qualifying under fcc part 15.249 since 15.247 only requires 20 dbc. harmonics limit 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th 9 th fcc 15.249 54 db p v/m 54 db p v/m 54 db p v/m 54 db p v/m 54 db p v/m 54 db p v/m 54 db p v/m 54 db p v/m fcc 15.247 20 dbc 54 db p v/m 54 db p v/m 54 db p v/m 20 dbc 20 dbc 54 db p v/m 54 db p v/m etsi en 300 220 ? 30 dbm ? 30 dbm ? 30 dbm ? 30 dbm ? 30 dbm ? 30 dbm ? 30 dbm ? 30 dbm table 4. etsi and fcc limits for harmonic radiation the programmed output power and size of t he ground plane will affect the level of the harmonics and thus determine t he necessary duty cycling. the allowed additional emission, or correct ion factor, is calculated based on maximum transmission time during 100 ms. equation 1 can be used to calculate the correction factor, where t is equal to maximum transmission time during 100 ms. from equation 1 , it can be calculated that a maximum transmission time of 50 ms, during 100 ms, will permit all radiation above 1 ghz to be 6 db above the given limits. ? 1 ? x ms t cf 100 log20 equation 1. fcc correction factor even when an averaging detector is utilised, there is still a limit on emissions measured using a peak detector function with a limit 20 db above the average limit. for more information and recommendations on how to comply with the different etsi sub bands please see application note 050 [3] . application note an001 [10] covers the regulations in more detail for short range devices (srd) for license free transceiver operation.
design note dn025 swra250a page 12 of 26 3.3.1.3.4 radiated emissions tests performed with the 0896bm15a 0001 and an external lc filter. figure 10 , figure 11 and figure 12 are from an anechoic chamber performed with the specified settings stated in the figure text. the tests were not performed according to the etsi or fcc regulations since this was not possible in the lab that was used. in these tests, the detector on the spectrum analyzer was set to max hold in order to fi nd the worst case limits. these measurements have to be performed on the final application board to be compliant to the etsi and fcc regulations so these measurements are just for pre-qualification purposes. the charts are only showing a maximum of -10 dbm; this is due to the software used to record the graphs; 10 dbm and 0 dbm was transmitted for the tests. the reference design boards are 2-layer, 0. 8 mm thick, fr4 pcb. the radiated emission level will be dependant on the ground plane, dec oupling capacitors, power routing and thickness of the pcb. the choice of antenna will also effect the radiated emissions. -90 -80 -60 -40 -20 -10 400m 800 1g 2g 3g 4g 5g 6 7g level in dbm frequency in hz figure 10. 10 dbm output power (0xc2); 868 mhz un-modulated static tx carrier figure 11. 10 dbm output power (0xc0); 915 mhz un-modulated static tx carrier figure 12. 0 dbm output power (0xc0); 915 mhz un-modulated static tx carrier
design note dn025 swra250a page 13 of 26 as can be seen in figure 11 ; there are some higher order harmonics that exceed the fcc limit of -41.2 dbm. if this was the case in the application; then equation 1 could be used to correlate the level by not continuously transmitting. in theory, performing the test with a 4-layer fr4 pcb with a ground plane on layer 2, will give a better performance since the pre-preg is typica lly 80-100 um thick and this will give a better grounding and amount of radiated energy will be less compared to a similar design on a 2- layer. even when several pre-preg layers will be used between layer 1 and layer 2 on a 4- layer fr4 pcb; the thickness will generally be less than 0.8 mm, so the radiated performance will be better. 3.3.1.4 summary of measurements use of an lc filter does not affect the s ensitivity or the output power measurements significantly. for the total link budget, there is an advantage using the lc filter for the sensitivity and a slight power lo ss for the output power. therefore, the total effect of the lc filter on the system performance will be the same. however, the main benefits of the lc filter are the suppression of the harmonics. when deciding which configuration should be used, the following should be considered: there are mainly two power applications categories with 10 dbm and 0 dbm; there are fcc and etsi regulatory requirements; and also if conducted emissions will also be tested in the final application (i.e. no internal antenna availabl e, only rf connector). the level of the output power setting will also affect the leve ls of the harmonics as can be seen in table 3. refer to table 5 , to summarize all the previous mentioned application variables to obtain the recommended application settings. the recommended power setting is also included in table 5 . etsi internal antenna etsi (rf connector) 10 dbm jti with lc 0xc0: 10.8 dbm jti with lc 0xc2:10 dbm 0 dbm jti no lc 0x50: 0.3 dbm jti no lc 0x50: 0.3 dbm fcc internal antenna fcc (rf connector) 10 dbm jti with lc 0xc0: 11.2 dbm (1) jti with lc 0xc0: 11.2 dbm 0 dbm jti with lc 0x8e: 0.8 dbm jti with lc 0x8e: 0.8 dbm table 5. recommended output power se ttings and application configuration for example; a customer with pcb si ze restrictions has an integrated antenna [7] , 0 dbm output power; targeting only the et si mark et. with reference to table 5 ; the lc filter will not be required for regulatory issues and with a power setting of 0x50, the expected power should be around 0.3 dbm. good practice would be to incorporate the lc filt er into the first prototype. the filter can always be removed by using a 100 pf capacitor or 0 ohm resistor instead of using the 5.6 nh inductor and leaving the 1.8 pf capacitor un-mounted.
design note dn025 swra250a page 14 of 26 3.3.2 jti matched filter balun for 433 mhz or 868 mhz or 915 mhz figure 13. jti reference design for 433 mhz or 868 mhz or 915 mhz (no decoupling capacitors shown) figure 14. component placement recommendations
design note dn025 swra250a page 15 of 26 figure 15. top layer routing recommendations refer to figure 9 , for the bottom layer layout recommendations. on the second layer; it is important to have a solid ground plane underneath t he rf structure and to avoid any routing directly underneath the rf. the power routing has been routed in a star formation and the power tracks must always be routed to t he decoupling capacitor first; then from the decoupling capacitor to the pad of the cc1101. figure 16. top layer for ultimate compact solutions, 4-layer design
design note dn025 swra250a page 16 of 26 figure 17. effective pcb size comparisons between for jti ultimate compact solution and integrated inductor valueline design referring to figure 17 , the jti design on the left side is 8.6 mm x 8.6 mm ~74 mm 2 ; the valueline design is 9.7 mm x 21.7 mm ~210 mm 2 . the discrete design size is 9.7 mm x 16.1 mm ~156 mm 2 . 3.3.2.1 jti matched filter balun 433 mhz 3.3.2.1.1 output power and harmonics solution 433 mhz 866 mhz 1299 mhz 1732 mhz 2165 mhz 2598 mhz 3031 mhz 3464 mhz discrete (ml) 8.4 -46 -51 -62 -62 -64 -57 -63 jti 8.2 -47 -49 -54 -49 -44 -37 -38 limits 10 -36 -30 -30 -30 -30 -30 -30 all values are in dbm. similar performance as multi-layer discrete so lution. lower 8th & 9th harmonic attenuation but still good enough margins
design note dn025 swra250a page 17 of 26 3.3.2.2 jti matched filter balun 868 mhz power setting 868 mhz 0868bm15c0001 0896bm15a0001 with lc + c etsi limit c0 9.4 10.8 8e -1 1.5 1736 mhz c0 -35 -28.9 -30 8e -50.8 -40.8 -30 2604 mhz c0 -42 -48.3 -30 8e -61 -55.4 -30 3472 mhz c0 -33.6 -48.5 -30 8e -44.1 -54.6 -30 4340 mhz c0 -36 -52.2 -30 8e -61 -55.1 -30 5208 mhz c0 -42.9 -53.4 -30 8e -50.5 -53.6 -30 6076 mhz c0 -56 -51.9 -30 8e -65 -51.9 6944 mhz c0 -50 -49.4 -30 8e -56 -49.4 7812 mhz c0 -62 -52.4 -30 8e -65 -52.6 -30 fc-169 (c0) -70 -53.5 -57 all values are in dbm unless stated. the values shown in red exceed the regulatory requirements. the matched balun filter (0868bm15c0001 passes all the harmonic requirements. the il has increased since the dual band version ( 0896bm15a0001) but this is understandable considering that the attenuation is in creased for the harmonics and a notch has been included to eliminate the fundamental ? 169 mhz spur.
design note dn025 swra250a page 18 of 26 3.3.2.3 jti matched filter balun 915 mhz 3.3.2.3.1 output power and harmonics power setting 0915bm15a0001 0896bm15a0001 0896bm15a0001 fcc 915 mhz without ext lc + c with lc + c limit c0 10.4 11.4 11.2 c3 9.3 10.7 10.4 8e 0.4 0.8 0.8 50 - -0.1 0.0 1830 mhz c0 -50 -26 -28 ? 20 dbc c3 -55 -30 -33 ? 20 dbc 8e -52 -46 -43 -41.2 50 - -36 -37 -41.2 2745 mhz c0 -54 -40 -49 -41.2 c3 -55 -41 -50 -41.2 8e -62 -53 -56 -41.2 50 - -53 -56 -41.2 3660 mhz c0 -39 -30 -50 -41.2 c3 -43 -34 -52 -41.2 8e -49 -38 -54 -41.2 50 - -41 -55 -41.2 4575 mhz c0 -47 -44 -52 -41.2 c3 -45 -45 -53 -41.2 8e -56 -54 -55 -41.2 50 - -54 -55 -41.2 5490 mhz c0 -40 -44 -52 -41.2 c3 -46 -47 -52 -41.2 8e -50 -47 -52 -41.2 50 - -50 -52 -41.2 6405 mhz c0 -54 -51 -51 ? 20 dbc c3 -52 -51 -51 ? 20 dbc 8e -70 -51 -51 -41.2 50 - -51 -51 -41.2
design note dn025 swra250a page 19 of 26 0915bm15a0001 0896bm15a0001 0896bm15a0001 fcc 7320 mhz without ext lc + c with lc + c limit c0 -47 -49 -53 -41.2 c3 -54 -52 -54 -41.2 8e -56 -52 -54 -41.2 50 - -54 -55 -41.2 8235 mhz c0 -63 -53 -53 -41.2 c3 -65 -53 -52 -41.2 8e -73 -54 -54 -41.2 50 - -54 -54 -41.2 746 mhz -61 -54 -54 -57 table 6. output power and conducted harmonic values obtained all values are in dbm unless stated. the values shown in red exceed the regulatory requirements. limit values shown in table 6. output power and conducted harmonic values obtained are taken from the etsi en 300 220 regulations for 868 mhz and fcc 15.247 for 915 mhz. ? for 0dbm and < 10 dbm applications, the conducted harmonic attenuation is good for fcc and etsi applications. ? for 10dbm+ applications, the conducted har monic attenuation is borderline for the 4th and 6th harmonics for fcc applications; since majority of application have an integrated antenna this is not seen as an issue. ? larger insertion loss compared to previous matched balun part for 868/915 mhz; this is acceptable since the external lc filter and dc block is now built into the new part. ? the new part will be also ideal for applic ation that require conducted measurements since the fc-169 mhz notch has been included, exhibiting a bpf behaviour; ideal for 0 dbm and < 10 dbm.
design note dn025 swra250a page 20 of 26 4 conclusion as an alternative to the traditional di screte reference designs as shown in figure 2 and figure 3 ; the jti reference designs can match the per formance of the discrete multi-layer inductor reference design with a lower component count. the 868 / 915 mhz discrete solution has a total of 12 components in the rf section com pared to the jti solution of 2 to 4 components depending on the usage of the lc filter. for compact designs; the new matched filter baluns at 433 mhz [ 6.2 ] or 868 mhz [ 6.3 ] or 915 mhz [ 6.4 ] from johanson is recommended. the rf section component count is reduced to a single component. for best performance; the discrete wire-wound inductor solution [10] is recommended and for the lowest cost; the integrated valueline reference design is recommended. for applications that require conducted emissions approval (application with an external rf connector); the 433 mhz [ 6.2 ] or 868 mhz [ 6.3 ] or 915 mhz [ 6.4 ] matched filter baluns are more beneficial since the notch filter has been designed into the filter. since these baluns incorporate the additional notch filter, extra filtering and dc blocking capacitor this has caused a slightly higher insertion loss than the 868/915 mhz balun solution [ 6.1 ]. table 7 summarizes the various reference designs available for cc110x and cc111x. integrated inductor valueline wire-w ound discrete jti 868/915 mhz jti 433 mhz or 868 mhz or 915 mhz performance middle highest middle middle typical output power for maximum power setting 11.0 dbm 12.0 dbm 11.0 dbm 10.5 dbm size largest middle middle smallest rf component count (no notch filter) 6 12 2 to 4 1 rf component count (with notch filter) 7 14 4 to 6 1 table 7. summary overview of reference designs available
design note dn025 swra250a page 21 of 26 5 references [1] cc1101 data sheet (cc1101.pdf) [2] an058 antenna measurement with network analyzer ( swra161.pdf ) [3] an050 using the cc1101 in the european 868mhz srd band ( swra146.pdf ) [4] jti data sheets [5] contact information: http://www.johansontechnology.com/en/contact.html [6] cc1101 jti balun 868/915 mhz ref. design rev1.0 ( swrc112.zip) [7] dn016 compact 868/915 mhz antenna design ( swra160.pdf ) [8] cc1101em 868/915 mhz reference design ( swrr045.zip) [9] cc1101em 315/433 mhz reference design ( swrr046.zip) [10] an001 srd regulations for li cense free transceiver operation ( swra090.pdf ) [11] dn017 cc11xx 868/915 mhz rf matching (rev. a) ( swra168.pdf )
design note dn025 swra250a page 22 of 26 6 appendices 6.1 appendix a - 0896bm15a0001 datasheet p/n 0896bm15a0001 detail specification: 09/09/2011 page 1 of 3 general specifications part number phase difference frequency (mhz) amplitude difference unbalanced impedance operating temperature power rating storage conditions storage period reel quantity moisture sensitivity level terminal configuration no. function 1 unbalanced port mechanical dimensions 2 gnd in mm 3 balanced port l 4 balanced port w 5 gnd t 6 gnd a b c g p mounting considerations * line width should be desi g ned to match 50 ? characteristic im p edance , depending on pcb material and thickness. mount device with colored mark facing up. # pin reference units: mm johanson technology, inc. reserves the right to make design changes without notice. all sales are subject to johanson technology, inc. terms and conditions. www.johansontechnology.com 4001 calle tecate ? camarillo, ca 93012 ? tel 805.389.1166 fax 805.389.1821 2011 johanson technology, inc. all rights reserved 1 4000 pcs 0.10 0.35 9.5 db min. 0.70 0.10 0.10 0.10 0.10 0.004 +0.1/-0.20 0.10 2.00 1.25 0.004 0.30 18 months max sealed. 1 week max after opened* -40 to +85c 1.5 db max. 180 10 +5 to +35c, humidity 45 - 75%rh 1w max. 0.012 0.30 0.004 0.20 0.65 0.05 0.028 0.004 0.026 0.002 +.004/-.008 0.014 0.008 0.012 0.049 0.004 0.004 0.079 868/915 mhz impedance matched/balun/lpf integrated component for t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 50 ? 0896bm15a0001 863 - 928 mhz attenuation (min.) return loss insertion loss impedance-matched to t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 chi p sets 25 @ 1726 - 1856mhz 35 min.@ 4315 - 4640mhz 35 min.@ 3452 - 3712mhz 35 min.@ 2589 - 2784mhz 1.5 db max. differential balanced impedance l w c ap gb t ? ?? ??? high frequency ceramic solutions land solder through-hole ( ?? 0.3) 0.8 1.0 0.30 * 0.35 balanced unbalanced balanced 100pf (eia 0402 or 0603) blocking capacitor.@ 45 or 90 deg pin#6 connected to ground. ??? ??? ) *for more info go to www.johansontechnology.co m/silverleads
design note dn025 swra250a page 23 of 26 6.2 appendix b - 0433bm15a0001 datasheet p/n 0433bm15a0001 detail specification: 09/09/2011 page 1 of 3 general specifications part number insertion loss frequency (mhz) return loss unbalanced impedance phase difference amplitude difference input power reel quanity operating temperature storage temperature range packaging bulk suffix = s eg. 0433bm15a0001s p/n style t & r suffix = e eg. 0433BM15A0001E suffix agpt suffix = none terminal configuration no. function 1 mechanical dimensions 2 in mm 3 l 4 w 5 t 6 a b c g p johanson technology, inc. reserves the right to make design changes without notice. all sales are subject to johanson technology, inc. terms and conditions. www.johansontechnology.com 4001 calle tecate ? camarillo, ca 93012 ? tel 805.389.1166 fax 805.389.1821 2011 johanson technology, inc. all rights reserved attenuation (db) gnd unbalanced port eg. 0433bm15a0001(e or s) gnd gnd balanced port** balanced port** 1w max. 4,000 -40 to +85c termination style +5 ~ +35 c, humidity 45~75%rh, 18 months. 1 week max after opened* 35 min. @ 4fo 35 min. @ 5fo balanced impedance 35 min. @ 3fo 1.9 db max 9.5 db min. 180 10 1.5 db +0.1/-0.2 0.10 0.10 0.10 0.10 0.10 0.004 0.012 0.30 0.008 +.004/-.008 0.20 0.30 0.004 0.012 0.05 0.014 0.004 0.35 0.10 0.026 0.002 0.65 1.25 0.004 0.70 0.049 0.004 0.028 0.004 433 mhz impedance matched/balun/lpf in tegrated component for t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 evaluation board 0433bm15a0001-ebsma 0.079 2.00 50 ? 430 - 435 0433bm15a0001 34 min. @ 2fo impedance-matched to t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 chipsets l w c a p gb t high frequency ceramic solutions *for more info go to www.johansontechnology.com/silverleads **balanced ports are dc-blocked from pins 1-2-5-6, capacitor is embedded . no need for external dc-blocking cap at gnd pins o r unbalanced port.
design note dn025 swra250a page 24 of 26 6.3 appendix c - 0868bm15c0001 datasheet p/n 0868bm15c0001 detail specification: 09/09/2011 page 1 of 3 general specifications insertion loss return loss phase difference amplitude difference input power reel quanity operating temperature storage temperature range * band pass filtering packaging bulk suffix = s eg. 0868bm15c0001s p/n style t & r suffix = e eg. 0868bm15c0001e suffix agpt suffix = none terminal configuration no. function 1 mechanical dimensions 2 in mm 3 l 4 w 5 t 6 a b c g p johanson technology, inc. reserves the right to make design changes without notice. all sales are subject to johanson technology, inc. terms and conditions. www.johansontechnology.com 4001 calle tecate ? camarillo, ca 93012 ? tel 805.389.1166 fax 805.389.1821 2011 johanson technology, inc. all rights reserved 868mhz impedance matched/balun/bpf in tegrated componen t for t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 gnd unbalanced port eg. 0868bm15c0001(e or s) -40 to +85c termination style +5 ~ +35 c, humidity 45~75%rh, 18 months. 1 week max after opened** 30 db min. @ 2604mhz 35 db min. @ 3472mhz 30 db min. @ 4340mhz impedance-matched to t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 chipsets gnd gnd balanced port*** balanced port*** 1w max. 4,000 30 db min. @ 1736mhz 10 db min. @ 699mhz 0.70 2.1 db max. 9.5 db min. 180 15 1.5 db max. +0.1/-0.2 0.10 0.10 0.10 0.10 0.10 0.004 0.012 0.30 0.008 +.004/-.008 0.20 0.30 0.004 0.012 0.028 0.004 0.05 0.014 0.004 0.35 0.10 0.026 0.002 0.65 0.079 2.00 1.25 0.004 0.049 0.004 part number attenuation* evaluation board 0868bm15c0001-ebsma unbalanced impedance operating frequency 50 ? 863 - 873 (mhz) balanced impedance 0868bm15c0001 l w c a p gb t high frequency ceramic solutions **for more info go to www.johansontechnology.com/silverleads ***balanced ports are dc-blocked from pins 1-2-5-6, capacitor is embedded . no need for external dc-blocking cap at gnd pins o r unbalanced port.
design note dn025 swra250a page 25 of 26 6.4 appendix d - 0915bm15a0001 datasheet p/n 0915bm15a0001 detail specification: 09/09/2011 page 1 of 3 general specifications part number insertion loss frequency (mhz) return loss unbalanced impeda nce phase di fference amplitude difference input power reel quanity operating temperature storage temperature range * band pass filtering packaging bulk suffix = s eg. 0915bm15a0001s p/n style t & r suffix = e eg. 0915bm15a0001e suffix agpt suffix = none terminal configuration no. function 1 mechanical dimensions 2 in mm 3 l 4 w 5 t 6 a b c g p johanson technology, inc. reserves the right to make design changes without notice. all sales are subject to johanson technology, inc. terms and conditions. www.johansontechnology.com 4001 calle tecate ? camarillo, ca 93012 ? tel 805.389.1166 fax 805.389.1821 2011 johanson technology, inc. all rights reserved 915mhz impedance matched/balun/bpf in tegrated component for t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 gnd unbalanced port eg. 0915bm15a0001(e or s) 1w max. 4,000 -40 to +85c termination style +5 ~ +35 c, humidity 45~75%rh, 18 months. 1 week max after opened** 40 min. @ 2745mhz gnd gnd balanced port*** balanced port*** 45 min. @ 3660mhz balanced impedance 30 min. @ 1830mhz attenuation* 2.0 db max 9.5 db min. 180 15 1.5 db 50 ? 902 - 928 0915bm15a0001 5 min. @ 745mhz impedance-matched to t.i. cc110x, cc111x, cc113x and cc115x, cc110l, cc113l, cc115l and cc430 chipsets +0.1/-0.2 0.10 0.10 0.10 0.10 0.10 0.004 0.012 0.30 0.008 +.004/-.008 0.20 0.30 0.004 0.012 0.05 0.014 0.004 0.35 0.10 0.026 0.002 0.65 1.25 0.004 0.70 0.049 0.004 0.028 0.004 evaluation board 0915bm15a0001-ebsma 0.079 2.00 l w c ap gb t high frequency ceramic solutions **for more info go to www.johansontechnology.com/silverleads ***balanced ports are dc-blocked from pins 1-2-5-6, capacitor is embedded . no need for external dc-blocking cap at gnd pins o r unbalanced p ort.
design note dn025 swra250a page 26 of 26 7 general information 7.1 document history revision date description/changes swra250a 2011.10.12 updated to include si ngle frequency matched balun filters. swra250 2009.01.14 initial release.
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