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rev 1.0 | pa g e 1 / 17 e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com f eat u res frequen c y range: 315 / 4 33.92 m h z s y m bol r a te: 0.1 to 3.4 k b p s sen s it i v i t y : - 1 08dbm at 2 . 4 k bp s , 0.1% ber receiv e r ba n d w idth : 2 0 0 k h z ima g e r e ject i o n r a tio : 2 5 d b larg e si g na l handl i ng : 1 0 d b m supp l y v o l ta g e: 1.8 to 3 . 6 v low p o w er c o nsu m ption: 3 . 8 m a 3 . 3 m a @ 3 1 5 mhz 3. 8 m a @ 43 3 . 9 2 m h z l o w sleep c u rrent r o hs c o m p l i ant module si z e: 3 2*11*5.0 m m d escri p t i o n s th e rfm210lw i s a n u ltr a lo w - cost , lo w po w er, hig h per f orm a nc e oo k sta n d - alon e rf r e ceive r f or 315/433.9 2 mh z w ireles s applications . i t i s p a r t of th e cmoste k ne x tgenr f t m famil y, w hich include s a c o mplet e lin e o f transmit t ers , receivers an d trans c ei v ers . t he rfm210lw i s a t r u e plug - an d - ru n device , n o regist er conf i guratio n an d manually - tun e i s requ i red . th e rfm210lw op e rat es from 1. 8 v to3 .6 v , finel y wor k til l th e en d o f mo st batteries po w er . i t consume s 3. 3 m a curren t w hi le achievin g - 1 09 db m rece i vin g s ensitiv i t y at 3 15 mh z an d consume s 3. 8 m a curren t w hile achievin g - 1 0 8 db m re c eivin g sensiti v it y at433 .92 mhz. rfm210lw rfm210lw a p p licati o n s z l o w - co s t co ns u m e r ele c tr o ni c s appli c ati o n s z ho m e and building aut o m at i on z in f r ared r ec ei v er repla c e m ents z indu s trial m onitoring a n d controls z re m ote a u t o m ated m eter r eading z re m ote l i ghting control sy s tem z w i r e le s s alarm and se cu rity s y s t e m s z re m ote k e y le ss entry (rke)
rev 1.0 | pa g e 2 / 17 rfm210l w e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com a b b r e v iati ons abbre v iations u s ed in th i s data s heet are d e sc r ibed below a g c auto m at i c g a i n control p c per s onal co m puter a n appli c a t ion n o tes pc b printed cir c uit board ber bit error rate p l l pha s e lo c k l oop b o m bil l o f m ate r ia l s pn 9 pseudorand o m n o i s e 9 bsc ba si c spa c ing be t w een ce n ters p o r p o w er on re s et bw ban d w i dth dc d i re c t current ee pr o m ele c tri c a lly era s able p r ogr a m m able read - o nly m e m o ry pu p p o w er up qf n q uad flat no - l ead rf radio frequen c y rfpdk rf produ c ts de v elop m ent k i t es d ele c tro - static d i sc harge rohs re s tri c tion o f ha z ardous s u b s tan c es es r equi v alent s e ries re s i s ta nc e rss i re c ei v ed sig n al strength i n d ic ator ext e x t e nded rx re cei v ing , r ecei v er if inter m ediate f r equen c y s a r succe s s i v e a p pro x i m ation regi s ter l n a low noi s e ampl i f ier sp i serial port in t er f ace lo lo c al o sc i lla t or t h thre s hold l p o s c lo w p o w er o s cillato r t x t r an s m i ss i on, t r an s m i tter m ax m a x i m u m t y p t y p ic al m cu m i c r ocontroller unit usb un i v er s al ser i al bus m in m i n i m u m vc o v oltage controlled o s c illator m o q m i ni m u m or d er q uantity w o r w a k e o n rad i o np0 negati v e - po s i ti v e - zero x o s c c ry s tal o scill a tor nc not conne c t e d x t a l /x t al cr y s tal oo k o n - o f f ke y i ng
rev 1.0 | pa g e 3 / 17 rfm210l w e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com t a b l e o f c o n te n t s 1. e lec t r ic a l ch a ract e r i s t i c s . . ..... . . . . . . . . . ..... . . . . . . . .. . . . .... . . ..... . . . . . . . ..... . . . .. .. . . . . ..... . . . . . . . .... . . ..... . . . . . . . . . . . . .... . . ..... . . . . . . . ...... . . . 4 1.1 re c om m ended ope r a t i o n con d i ti o n s ................... . .............. . ..................................................... . .. .. . .. . . . . 4 1.2 a b s olute maxi m um rat i ngs .... .. . . . . . ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . .. . . .. . . .. .. .. . .. . . . .. . . . 4 1.3 re c e i v er s pe c i f i c a t i on s ..... . . .. . . . .. .. .. ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . . . . . . . .. . . . . .. . . . .. .. . . . . 5 1.4 c r y s tal os c i l l a t or ... . . . ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . .. . . .. .. .. .. .. . .. . . . .. .. . . . . .. . ... . .. . . . . . .. . . . 6 1.5 l p o s c ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . .. . . .. .. .. .. .. . .. . . . .. .. . . . . .. . ... . . . . .. .. . .. . . . . . .. . ... . .. . .. .. . . . . 6 2. p in d e sc r i pt ions . . . . . . ..... . . . . . ..... . . . . . . . .. . . .. . . . . . ..... . . . . . . . ... . .. . . . . .. . . . . ..... . . . . . . .. . . . . . ..... . . . . . . . . . . . .. . . . . . ..... . . . . . . . ... . .. . ...... . . . . . . . .... . 7 3. t y p ical p e rf o r ma n c e ch a r a c t e r i s t i c s .. . . . . . . . ..... . . ... . . . . . ...... . . .. . . . . . . .. . . . . . ..... . . . . . . . .... . . ..... . . . . . . . ..... . . . . .. . . . . . ... . . ..... . . . . . . 8 4. t y p ical a p p l i c a t i o n s c h e m a t ic . . . ..... . . . . . . . ..... . . . .. . .... . . .... . . . . . . . .... . . ..... . . . . . . . ... . . .... . . ..... . . . . . . . ..... . . . .. . . . . . . ..... . . . . . . . .... . . 9 5. fun c t io n al d e s c r ip t i o n s . . ..... . . . . . . . ... . . ..... . . . . . . . . . . . . .... . . ..... . . . . . . . ..... . . . . . . ..... . . . . . . . ..... . . . .. . ...... . . .. . . . . . . . .... . . ..... . . . . . . . .. . . . . . 1 0 5.1 o v e r v i e w ... . .. . .. . .. .. . . . . ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . .. . . .. .. .. .. .. . .. . . . .. .. . . . . . . .. .. .. . .. . . . . . . 10 5.2 mod u la t i o n, f r e q uen c y a nd s y m b ol r at e ... . .. . .. .. . ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . ...... . 10 5 . 3 m a i n c on f i gr at i on . . ........ . . ... . ... . ...... . .. . . . ... . .. .... . ......... . . .. ... . .... . . ... . .. .. .. . .... . . ... . .. . . . . . ..... . . . . 1 1 5.4 inte r n a l b l o c k s de s c ripti o n ..... . . .. .. . ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . . . . .. . .. . . . . .. . . . .. . . . . 12 5.4.1 rf f r ont - e n d a n d a g c .......... . .. . ............ . ..... . ......... . ........ . ..... . ......... . ..... . ......... . ..... . ....... ... .. ....... . . . 12 5.4.2 if f i l t e r . . . .. .. . . . . .. . .. . . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. . . . .. . .. .. .. . ... 12 5.4.3 r s s i ... .. . .. . . . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. . . . . . .. . . . . . . . 12 5.4.4 s a r a d c ............. . ...... . ........ . ......... . ..... . ........... . ... . .............. . .. . ......... . ..... . ..... . ............. . ..... . . . ....... . . 12 5.4.5 c r y s t a l o s c i l lat o r ............. . .. . ............... . .. . ........... . ...... . ........ . ..... . ......... . ..... . ..... . ............. . ..... . . . ...... . 12 5.4.6 f r eq uen c y s y n t h e s i ze r . .. . . .. .. . . . ... . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . .. . .. .. .. . .. . . . . . .. . . . 12 5.7.7 l p o s c . .. .. . .. . . .. .. . . . .. . . . . . .. .. . .. . .. .. . . . .. . . . . . .. .. . .. . .. .. . . . .. . . . . . .. .. . .. . .. .. . . . .. . . . . . .. .. . .. . .. .. . . . .. . . . . . .. .. . .. . . . . .. .. . .. .. .. .. 12 5.5 o perat i o n st a t e s . .. . .. . . ... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . .. . . .. .. .. .. .. . . . . . .. . .. .... .. .. .. .. . .. . . . . . 13 5.6d uty c y c le r e ceiv e m o de... .. . .. . . . .. .. . .. . . .. ... . .. .. . .. . . . .. .. . . . . .. .. .. . .. . .. .. . .. . . .. . . . . .. . . . .. .. . .. . . .. .. .. .. .. . .. . . . .. . . . . .. .. .. .. .. . .. . . . . 14 6. o r d eri n g i n f o r m a t i o n . . ..... . . . . . . . ..... . . . .. . ..... . . ... . . . . . . . .... . . ..... . . . . . . . .. . . . .... . . ..... . . . . . . . ..... . . . .. .. . . . . ..... . . . . . . . .... . . ..... . . . . . . ... . . . . 1 5 7. p a c k a g e o u t li n e . ... . . . .. . ..... . . . . . . . ..... . . . . . . ..... . . . . . . . ..... . . . .. . ...... . . .. . . . . . . . .... . . ..... . . . . . . . ......... . . ..... . . . . . . . ..... . . . .. . . . . . . . . . . ..... . . . . 16 8. c on ta c t i n f o r m a t i o n .. . . . ..... . . . . . . . ..... . . . .. . . . . . . ..... . . . . . . . .... . . ..... . . . . . . . . . . . . .... . . ..... . . . . . . . .... . . ... . . ..... . . . . . . . ..... . . . .. . ... . . . . . . ..... . . . . 17
rfm210l w rev 1.0 | pa g e 4 / 17 e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com 1 . elec t r i c a l ch arac t eri s tics vdd = 3.3 v , t op = 25 , f rf = 433.92 m h z , sensiti v iti e s are m ea s ur e d in re c ei v ing a pn9 s eque nc e and m at c hing to 50 ? i m p e d an c e, w i th the ber of 0. 1 % . a ll m e asurem e nts are per f or m ed u s ing the board rfm210lw - e m v1.0, unle s s othe r w i s e noted. 1.1 recommended ope r ation conditions 1.2 a b solute maxi m um r a t i ngs t a b le 3. a b s o l u t e m a xim u m r a t i n g s [ 1 ] par a m e t er s y m b o l cond i t i ons m in m ax unit supply v ol t a g e v dd - 0.3 3.6 v inter f a c e v o lt a ge v in - 0.3 v dd + 0.3 v j un c tion t e m p era t ure t j - 40 125 storage t e m p e r ature t s t g - 50 150 soldering t emperat u r e t sd r la s ts at l e a s t 30 s e c on d s 255 esd rating [2] hu m an b o d y m odel (h b m ) - 2 2 kv lat c h - up current @ 85 - 100 100 ma notes: [1]. stre ss es abo v e tho s e l i st ed as ab s olute m a x i m um rating s m a y c a us e per m anent d a m age to t he d e v ic e. this is a s tre s s rating only a nd f un c t i onal operation o f t h e de v i c e under t he s e c onditi o n s is not i m p l i e d. e x po s ure to m a x i m u m rating c onditions f or e x tended periods m ay af f e c t de v i c e relia b i l i t y . [2]. the rfm210lw i s h i gh - p e r f o r m ance r f integrated ci r c ui t s w i th vc o n/p pins h avi ng a n e s d ra t i ng < 2 k v hb m . handli n g and a ss e m b l y of this de v i c e s hould only b e done at es d - prote c ted w o r ks tatio n s . c a utio n ! e s d sens i t i ve de vi ce . p r e c aut i o n s hou l d b e us e d w hen ha n d l i n g th e de vi c e i n o r de r t o p r e v en t pe r ma nen t d a ma g e .
rfm210l w rev 1.0 | pa g e 5 / 17 e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com 1.3 r ecei v e r specif i cat i o ns t a b le 4. r e cei v er s p eci f i c a t i o n s par a m e t er s y m b o l cond i t i ons m in t y p m ax unit frequen c y range f rf 300 480 m h z s y m bol rate sr 0.1 3.4 k bps sensi t i v i ty s 315 f rf = 315 m h z , sr = 2.4 k b p s , ber = 0.1% - 1 09 dbm s 433. 9 2 f rf = 433.92 m h z , s r = 1 kb p s , ber = 0.1% - 1 08 dbm saturation in p ut signal le v el p l v l 10 dbm w o r k ing curr e nt i dd f rf = 315 m h z 3.5 ma f rf = 433.92 m h z 3.8 ma sleep current i s l eep w h en sl eep t i m er is o f f 60 na frequen c y re s olution f re s 24.8 hz frequen c y s y n t he s i z er sett l e t i m e t lock fr o m x o s c s ettled 150 us blo c k i ng i m m unity bi sr = 1 k bp s , 1 m h z o f f s et, c w inter f eren c e 52 db sr = 1 k bp s , 2 m h z o f f s et, c w inter f eren c e 74 db sr = 1 k bp s , 10 m h z o f f s e t , c w inter f eren c e 75 db i m age r e j e c tion ratio i m r if = 280 kh z 35 db input 3 r d or der inter c ept point iip3 t w o tone te s t at 1 m h z and 2 m h z o f f s et f r equen c y . m a x i m u m s y s tem gain s ettings - 25 dbm re c ei v er ba n d w i dth bw 200 k hz re c ei v er star t - up t i m e t s t a r t - u p fr o m p o w er up to re c ei v e 7.3 ms
rfm210l w rev 1.0 | pa g e 6 / 17 e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com 1.4 c r y s t a l osc i llat o r pa r ame t e r s y mbol cond iti on s m i n t y p max un i t c r y st a l f r equen c y [ 1 ] f x t a l3 1 5 f r f = 31 5 m h z 18 . 8 7 44 m h z f x t a l4 33 . 92 f r f = 433 .9 2 m h z 26 m h z c r y st a l t o l e r ance [ 2] 2 0 ppm lo a d c apac i ta n c e c l o a d 10 15 20 pf c r y st a l esr rm 60 ? driv e level 100 uw agin g pe r y ear 2 ppm x t a l s t a rt u p t i m e [ 3 ] t x t al 400 us no t e s : [ 1 ] . t h e rfm210lw c a n d i r e c t l y w o r k w i t h e x t e r na l r e f e r en c e c l o c k inpu t t o x i n p i n ( a c oupl i n g c ap a c i t o r i s r e q u i r ed ) w i t h pea k - t o - pea k a m pl i t ud e o f 0 . 3 t o 0 . 7 v . [ 2 ] . t h i s i s t h e t o t a l t o l e r anc e i n c l u d i n g ( 1 ) i n i t i a l t o l e r ance , ( 2 ) c r y s t a l l oa d i ng , (3 ) ag i ng , an d ( 4 ) t empe r a t u r e d e p e nden c e . t h e a cc ep t a b l e c r y st a l t o l e r anc e dep e nd s o n r f fr eq u en c y a n d c hanne l s p a c i n g / b a nd w i d t h. [ 3 ] . t h i s p a r a m e t e r i s t o a l a r g e de gr e e c r y st a l depe n d e n t .
rfm210l w rev 1.0 | pa g e 7 / 17 e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com 2 . pi n d es c ri p t i on s figure 2. pin diagram t a b le 6. rfm210lw p in d e s c r i p t i on s pin n u m b e r na m e i/o descripti o n s 1 g nd i gr ou nd 2 d a t a o r e ceived d a t a output 3 v dd i pow e r s up ply input 4 c lk i 3 - wire spi c l ock input for eeprom progra m m i ng 5 s da i/o 3 - wire spi data input and output for eeprom pr og r ammi ng 6 c sb i 3 - wire spi chip select input for eeprom pr og r ammi ng i 7 g nd i g ro u nd 8 a n t i rf signal input to the lna 9 g nd i g ro u nd 10 g nd i g ro u nd
rfm210l w rev 1.0 | pa g e 8 / 17 e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com 3 . 3 v 1 . 8 v 3 . 6 v 4 3 3 . 92 m hz 3 1 5 m h z s e n s i t i v it y ( d b m ) s e n s i t i v it y ( d b m ) c u rr e nt c on s u m p ti o n ( m a ) s e n s i t i v it y ( d b m ) s e n s i t i v it y ( d b m ) c u rr e nt c on s u m p ti o n ( m a ) 3. t y pical perf o rma n ce c h aract e ristics 3 . 90 c u rr e n t v s. s up p l y v o l t a g e 4 . 8 c u rre n t v s . t e m p e r a t u re 3 . 8 0 4 . 6 3 . 70 3 . 60 3 . 50 4 . 4 4 . 2 4 . 0 3 . 8 3 . 40 3 . 6 3 . 20 433 . 9 2 m h z 31 5 m h z 3 . 4 3 . 2 3 . 10 1 . 8 0 2 . 0 5 2 . 3 0 2 . 5 5 2 . 8 0 3 . 0 5 3 . 3 0 3 . 5 5 3 . 80 supp l y v o l t a g e ( v ) 3 . 0 - 5 0 - 3 0 - 1 0 1 0 3 0 5 0 7 0 9 0 1 10 t e m p e r a t u r e ( ) f i gu r e 3 . 1 c u r re nt v s. v ol t a g e, f rf = 3 1 5 / 433 . 9 2 m h z , s r = 1 k bps f i gu r e 3 . 2 c u r re nt v s. t e m p e r a t u re, f rf = 433 . 9 2 m h z , s r = 1 k bps - 1 1 2 . 2 s e n s i t i v it y v s . s uppl y v o l t a ge - 1 1 0 . 4 s e n s i t i v it y v s . t em p era t u re - 1 1 2 . 6 - 1 1 1 . 2 - 1 1 3 . 0 - 1 1 2 . 0 - 1 1 3 . 4 - 1 1 2 . 8 - 1 1 3 . 8 - 1 1 3 . 6 - 1 1 4 . 2 - 1 1 4 . 4 - 1 1 4 . 6 - 1 1 5 . 2 - 1 1 5 . 0 1 . 6 1 . 9 2 . 2 2 . 5 2 . 8 3 . 1 3 . 4 3 . 7 4 . 0 s up p l y v o l ta ge ( v ) - 1 1 6 . 0 - 4 0 - 2 0 0 2 0 4 0 6 0 8 0 1 00 t e m p e r a t u r e ( ) f i gu r e 3 . 3 se n s i t i v i t y v s. s upp l y v o l t a g e, s r = 1 kbps , b e r = 0 . 1% f i gu r e 3.4 s e n s i t i v i t y v s . t em p e r at u r e , f rf = 4 3 3 . 92 m h z , v dd = 3 .3 v , s r = 1 k bps , b e r = 0 . 1 % - 1 01 s e n s i t i v it y v s. s y m bo l ra te - 1 1 2 . 5 s e n s i t i v it y v s. b e r - 1 03 - 1 1 3 . 0 - 1 05 - 1 07 - 1 09 - 1 11 - 1 1 3 . 5 - 1 1 4 . 0 - 1 1 4 . 5 - 1 1 5 . 0 - 1 1 5 . 5 - 1 13 - 1 1 6 . 0 - 1 15 0 4 8 1 2 1 6 2 0 2 4 2 8 3 2 3 6 40 s y m bo l r a t e ( k b p s) - 1 1 6 . 5 0 . 01 % 0 . 10 % 1 . 00 % 1 0 . 0 0% b e r f i gu r e 3 . 5 s e n s i t i v i t y v s. s r, f rf = 4 3 3 . 92 m h z , v dd = 3 .3 v , b e r = 0 . 1% f i gu r e 3 . 6 se n s i t i v i t y v s . b e r , f rf = 4 33 . 92 m h z , v dd = 3 .3 v , s r = 1 k bps
rev 1.0 | pa g e 9 / 17 rfm210l w e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com figure 9: typical application schematic
rev 1.0 | pa g e 10 / 17 rfm210l w e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com lp os c x o sc 5. func ti onal descript i ons r f i g n d l n a i - mx r q - m x r i m a g e r e je c tion ban d - pa ss fi l t er i - l m t r s si q - l m t s a r a g c o o k de mo d a f c & a g c ra d i o co n t r o l l er 3 - w i re s pi c s b scl s d a lo gen vco loop fi l t er pf d / cp 26 m h z v dd g n d ld o s bandgap p o r d i vid e r a f c & - m o d u l a t o r e epr o m clko d o ut v c o n vc o p nr s to x i n x o u t f i gu r e 5. f u n c t i on al b l o c k d i a g r am 5.1 o v e r v i ew the rfm210lw is an ultra l o w p o w er, high p er f or m ance, l o w - c o s t o o k s t and - alone r f re c ei v er f or v a rious 300 / 480 m h z w i re l e s s appli c a t ion s . it is part o f the c m o s t e k n e x t g enr f t m f a m il y , w hi c h in cl udes a c o m plete line o f tran s m i tter s , re c ei v ers and t r an sc ei v er s . the c hip is ba s e d on a f u l l y i n tegrated, l o w - i f re c ei v er ar c hite c ture. the lo w - i f a r chit e ctu r e f a c ilitat e s a v e r y l o w e x te r na l c o m po n ent count and does not s u f f e r f r om po w e r line - induced inter f eren c e proble m s . the s y nthe s i z er c o n tains a vco a nd a l o w noi s e f r a c tion a l - n p ll w i th an ou t put f r equen c y resolution o f 24.8 h z . the v co operates a t 2x the l o cal o scillator ( l o ) f r equency to reduce spurio u s e m is s i on s . e v ery analog blo c k is c a libr a ted on ea c h p o w er - on re s et (p o r) to t h e internal re f ere n c e v oltage. the c alibration helps the de v i c e to f i n e ly w o r k under d i f f erent te m perat u r e s and s upply v oltage s . the b a s eband filt e r ing and de m odulation is done by the digital demo du lato r . the demodulated si gnal is output to t h e e x ternal m c u v i a the d o ut pin. no e x tern a l mcu c ontrol is ne e ded in the ap pl i c atio n s . the 3 - w i re s p i inter f a c e is o nly u s ed f or c o nfiguring t he de v i c e. the con f iguration c an be done w i th t he r f pdk a n d the u s b pro g ram m e r . the r f frequen c y , sy m bol rate a n d o t her prod uc t f eatures are all co n figur a ble. this sa v e s the c o s t and s i m pl i fies the d e si gn, de v elo p m ent and m a n uf a c ture. a l te r nati v el y , in s t o c k produ c ts o f 315/433.92 m h z are a v ai l able f or i mm e d i ate de m an d s w i th no need of e e p r o m p r ogr a m m i ng. t h e rfm210lw o perates f r om 1.8 to 3.6 v s o that it c an fi n e ly w ork w i th m o s t batteries to their u s e f u l po w er li m it s . t h e re c ei v e c urrent is only 3 . 8 m a . t he rfm210lw r e c e i v e r together w i th t he c m t21 1 x t ran s m i tter enables an ultra l o w c o s t rf lin k . 5.2 modulation, fr e qu e n c y and s y m bol rate the rfm210lw s upports o ok de m o d ulati o n w i th the s ym b ol rate f r om 0.1 to 4 0 k bp s . i t continuou s ly c o v ers the f r equen c y ra n ge f r om 300 to 480 m h z , in c l uding the l i c en s e f r ee ism f r equen c y band around 315 m h z and 4 3 3. 9 2 m h z . the int e rnal f r equen c y s y nthe s i z er c ontains a hig h - purity vco a nd a l o w noi s e fra c tiona l - n p ll w i th an output f r equen c y re s olution o f 24.8 h z . see t able 9 f or t h e de m odulation, f r equen c y and s y m bol ra t e in f or m ation.
rfm210l w e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com rev 1.0 | pa g e 11 / 17 t a b le 7. m o d u la t i on , f r e qu en c y a n d s y mbo l r a te par a m e t er v al u e u n i t de m odulation o ok - frequen c y 300 to 480 m h z frequen c y re s olution 24.8 hz s y m bol rate 0.1 to 3.4 kbps 5.3 main c onfigurations unl i ke o t he r ne x t gen r f t m r e c e i ve rs , t h e rfm210lw d oe s no t n e e d a n y r eg i st e r c on tr o l o r manufa ct u r i n g p r og r a mm i ng . t he c on f i gu r a t i o n o f t h e dev i c e i s f i x e d i n o r de r t o s av e t h e d e ve l opmen t e f f o r t , r e d u c e s y st e m c o s t an d s i mpl i f y th e manu f a ct u r i ng p r o c e ss . t h e m a i n c on f i gu r at i o n s a r e l ist e d i n th e t ab l e b e l o w . p l e a s e no t e t ha t i f mo r e f l e x i b i l i t y i s need e d i n t he s y st em , t h e u s er c a n u s e o t he r n e x t ge n rf t m r ece i ve r s li k e c m t2210 a a n d e tc . fo r t ho s e p r od u cts , a n embed d e d ee p ro m i s avai l a b l e o n c h i p f o r t h e u s e r t o c on f i gu r e al l t h e p r odu c t f ea t u r e s . 5.4 internal b l ocks d e sc r ipt i on 5.4.1 rf f r o n t - end a n d a g c t h e rfm210lw f ea t u r e s a l o w - i f r e c e i ve r . t h e r f fr on t - en d o f th e r e c e i ve r c o n sis t s o f a l o w no i s e am p li f i e r ( lna ) , i/ q m i x e r an d a w i d e - ban d powe r de t e ct o r . on l y a l o w - c o s t i ndu ct o r an d a c apa c i t o r a r e r equ i r e d f o r ma tc hin g t h e l n a t o a n y 5 0 ? an t e n na s . t h e i npu t r f s i g n a l in du c e d o n th e a n te nn a i s am p l i f i e d an d d o w n - c o n ve rt e d t o t h e i f fr equ e n c y f o r f u rt her p r o c e s s i ng. b y me a n s o f t h e w i de - b an d po w e r de t e ct o r an d t h e a tt en u a t i o n ne t w o rk s bu i l t a r oun d t h e l n a , t h e au t oma t i c g a i n c o n tr o l ( a g c ) l oo p r eg u l a t e s t h e r f fr on t - end s ga i n t o ge t t h e be s t s y s t e m li n ea r i t y , s e l ec t i v i t y an d s en s i t i v i t y pe rf o r m an c e , e v e n t ho u g h t he r e c e i ve r s u f f e r s fr o m str on g ou t - o f - ban d i n t e rf eren c e. 5.4.2 if fi l t er t h e s i gn a l s c o m i n g fr o m t h e r f fr on t - en d a r e f i l t e r e d by t h e f u ll y i n t eg r a t e d 3 r d - o r de r ba n d - pas s imag e re j e c t i o n i f f il t e r w h i c h
rfm210l w e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com rev 1.0 | pa g e 12 / 17 a c h i ev e s ove r 25 d b i m ag e re j e ct i o n r at i o t y p i c a l l y . t h e i f c en t e r fr equen c y i s d y n a m i c al l y ad j u st e d t o en a b l e th e i f f il t e r t o l o c a t e t o t h e r i g h t f r equen c y b a n d , t hu s t h e r e c e i ve r s en s i t i v i t y a n d ou t - o f - ba n d i n t e rf e r en c e a tt enua t i o n p e rf o r man c e a r e k ept op t i m a l d e s p i t e t h e ma n u f a ct u r i n g p r o c e s s t o l eran c e s . t h e i f b an d w i d t h i s f i x e d a t 20 0 k hz. 5.4.3 r s s i t h e s ub s e q u e n t mu l t i st a g e i/ q lo g a m pl i f i er s e nhan c e t h e ou t p u t s i gna l fr o m i f f i l t e r be f o r e i t i s f e d f o r demodu l a t i o n . r e c e i ve s i gn a l s tr eng t h in d i c a t o r (rss i ) gene r a t o r s a r e i nc l ude d i n bo t h lo g a m pl i f i er s w hi c h p r odu c e d c v o l t age s t h a t a r e d i r e c t l y p r opo rt i on a l t o t h e i npu t s i gna l l eve l i n bo t h o f i an d q pa t h . t h e r e s u l t i n g rss i i s a s u m o f bo t h t he s e t w o pa t h s . e x t e n d i n g f r om t h e nom i na l s e n s i t i v i t y l eve l , t h e rss i a c h i eve s d y n am i c r ang e o ve r 6 6 db. t h e rfm210lw i n t eg r a t e s a pa t en t e d d c - o f fs e t c an c e l l a t i o n e n g i ne . t h e r e c e i v e r s en s i t i v i t y p erf o r man c e be n e f i t s a l o t fr o m t he no v e l , f a s t an d a cc u r a t e d c - o f f se t r emova l i m p l emen t at i on. 5.4.4 s a r a d c t h e o n - c h i p 8 - b i t sa r ad c d i g i ta l i ze s t h e r s s i f o r oo k demo d u l at i o n. 5.4.5 c r y s ta l o sc i lla t o r t h e cr y st a l os c i l l a t o r i s u s e d a s t h e r e f e r en c e cl oc k f o r t h e pl l fr equ e n c y s y n t h e s i ze r an d s y st e m c l oc k f o r t h e d i g i t a l b l oc k s. a c r y st a l s hou l d b e u s e d w i t h ap p r op r i a t e l oa d i n g c apac i t o r s ( c 2 a n d c 3 i n f i gur e 9 o f p a g e 9 ) . t h e v a l u e s o f t h e l oa d i ng c apac i t o r s dep e n d o n th e t o t a l l oa d c apac i t anc e c l s p e c i f i e d f o r t h e c r y s t a l . t h e t o t a l l oa d c a pa c i t anc e s ee n be t w e e n t h e x i n an d xou t p i n shou l d e q u a l c l fo r t h e c r y s t a l t o os c i l l a t e a t des i r e d fr equ e n c y . 1 c l = 1 + c 2 1 c 3 + c p arasit i c t h e p a r as i t i c c a pa c i t anc e i s c o n st i t u t e d b y t h e i npu t c apa c i t a n c e an d pc b tr a y c apac i t an c e . t h e e s r o f t h e c r y st a l s hou l d be w i t h i n t h e s pe c i f i c a t i o n i n o r de r t o en s u r e a r e l i a b l e st a r t - up . a n e x t e r na l s i g na l sou rc e c a n eas i l y b e u s e d i n p l a c e o f a c onven tio na l x t a l a n d s h o u l d be c onne ct e d t o t h e x i n p i n . t h e i n c o m i n g c l o ck s i gn a l i s r e c ommen d e d t o h a v e a p ea k - t o - peak s w i n g i n t h e r ang e o f 3 0 0 m v t o 70 0 m v a n d a c - c ou p l e d t o t h e x i n p i n. 5.4.6 f r e q u en c y s y n t h esi z e r a fr a ct i o n a l - n f r equen c y s y n t h e s i ze r i s u s e d t o gene r a t e th e l o fr equ e n c y f o r t h e d o w n c on v e rs i o n i/ q m i x e r . t h e fr eq u en c y s y n t he s i ze r i s f u l l y i n t eg r a t e d e x c ep t t h e vc o t an k i ndu ct o r w h i c h enab l e s t h e u ltr a l o w - p o w e r rec e i ve r s y st e m d e s i gn . us i n g t he 2 6 mh z r e f e r en c e c l o c k p r o v i d e d b y t h e c r y st a l os cil l a t o r o r t h e e x t e r na l c l o c k sou rc e , i t c a n ge n e r a t e r e c e i v e fr equen c i e s o f 3 15 an d 4 33 .9 2 mh z w i t h a fr equen c y r e s o l u t i o n o f 24 . 8 hz. t h e vc o a l w a y s ope r a t e s a t 2 x o f l o fr equen c y . a h i g h q ( at v c o fr equen c y ) t an k i nd u ct o r s h ou l d b e c hose n t o en s u r e t he vc o o s c i l l a t e s a t a n y c ond i t i o n s mea n w h il e b u r n s l e ss po w e r an d ge t s be tt e r pha s e no ise per f o r m an c e . i n add i t i on , p r oper l y l a y ou t t h e i n d uc t o r ma tt e r s a l o t o f a c h i ev i n g a g oo d p ha se n o i s e pe rf o r m an c e an d l e s s s pu ri o u s em i s s i on . t h e r e c ommended vc o i nd u ct o r s fo r di f f e r en t l o f r eq u en c y b a nd s a r e s ho w n a s b el l o w . t a b le 9. v co i ndu c t or f o r 3 1 5/ 4 3 3 . 9 2 m hz f r e qu e n c y b a nd l o f r eq u en c y b a n d ( m hz) 315 433 .9 2 vc o i ndu ct o r ( nh) 33 22 mu l t i p l e s u b s y s t e m c a l i b r a t i on s a r e pe rf o r m e d dynam i c al l y t o e n s u r e t h e fr equen c y s y n t he s i ze r ope r a t e s r e l i a b l y i n a n y wo rk i n g c ond i t i o n
e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com rev 1.0 | pa g e 13 / 17 rfm210l w 5.5 operation states as the rfm210lw is o p er at i ng in duty cycle r e ceiving m o d e,the d evice will g o through the states sh o wn a s t he figure b e lo w after the p o wer up. p o w e r u p ( p u p ) s t a t e o n c e t h e d ev i c e i s po w e re d u p, t h e d ev i c e w il l g o t h r o u g h th e p o w e r u p ( pup ) s eq u en ce wh i c h i n c l u d e s t h e t a s k o f r e l ea s i n g t h e po w e r - o n re s e t ( por ) , t u r n i n g o n t h e c r y st a l an d c a l i b r a t i n g t h e i n t e r na l b l o ck s . t h e pu p t a k e s abou t 4 m s t o f i n i s h i n t he a l w a y s r e c e i v e mode . t h e ave r a g e c u rr en t o f t h e pu p s eque n c e i s a bou t 0 . 9 ma. sle e p s t a t e i n t h i s st a t e , a l l t h e i n t e r n a l b l o ck s a r e p o w e r e d d o w n e x ce p t t he s l ee p t i me r . th e s l ee p t i m e i s f i x e d a t 3 m s . t h e s l ee p c u r r e n t i s ab o u t 6 0 na. x t a l s t a t e o n c e t h e dev i c e w a k e s u p fr o m t h e slee p s t a t e , t h e c r y st a l o s c ill a t o r r e st a r t s t o w o rk . t h e c u r r e n t c on s u m p t i o n i n t h i s st a t e i s ab o u t 52 0 ua. t u n e s t a t e t h e d ev ic e i s t u ne d t o t h e de s i r e d fr equ e n c y a n d re ad y t o r e c e i ve . i t u s ua ll y t a k e s app ro x i m a t e l y 30 0 u s t o c o m p l e t e t h e t un i ng s equen c e . t h e c u rr en t c on s u m pt i o n i n t h i s st at e i s abou t 2 ma. r x s t a t e t h e d ev ic e r e c e i ve s t h e i n c o m i n g s i gn a l s a n d o u t pu t s t h e de m o du l a t e d d a t a o n th e dou t p i n . t h e c u rr en t i n th i s s t a t e i s abo u t 3 . 3 m a ( 31 5 mhz ) o r 3 . 8 m a ( 4 3 3 . 9 2 mhz ) .
e \ ma i l:sal e s @hoper f .com w e b si t e://ww w .hoper f .com rev 1.0 | pa g e 14 / 17 rfm210l w 5.6 d u t y c y c l e r ecei v e mode i n t h e du t y - c y c l e mode , a f t e r t he pu p t h e d e v i c e w il l au t oma t i ca l l y r epea t t h e s e q uen c e o f s l e e p , x t al , t un e a n d r x un t i l t h e dev i ce i s po w e r e d d o w n. t h i s a ll o w s t h e dev i c e t o r e - t un e t h e s y n t he s i ze r r egula r l y t o ad e p t t o t h e c hang e a b l e e nv i r o n m en t and t he r e f o r e r ema in i t s h i g h e s t per f o r m an c e . t h e d ev ic e w il l c onti n uous l y r e c e i v e a n y i n c om i n g s i gna l s du r i n g t h e r x st a t e and s en d ou t t h e de m o d u l a t e d d a t a o n t h e dou t p i n . t h e p u p s e quen c e c on s um e s ab o u t 4 m s . s e e t h e f i gu r e bel o w f o r t h e t i m i n g an d c u rr en t c o n s ump t i o n o f t h e du t y c y c l e r e c e i v e mode t h e a dv a n t a g e s o f t h e du t y - c y c l e r e c e i v e mod e a r e li st e d b e l o w . ma i n t a i n i n g t h e h i gh e s t pe rf o r m an c e o f t h e dev i c e by re gu l a r fr equ e n c y r e - t un e. i n cr ea s i n g t h e s y st e m st ab i l i t y b y r egu l a r s l ee p ( r e s e tt i n g mo s t o f t h e b l o c k s) . i f mo r e c u r r en t s av i n g i s r eq u i r e d i n t h e appl i ca t i on , o r o t he r pa r ame t e r ne e d t o b e c on f i gu r ed , t h e u s e r c a n al s o u s e c m t 2 2 1 0 a o r o t he r n e x t g e n r f t m r e c e i ver s w i t h embed d e d e e p ro m bui l t - i n an d al l p r o d u c t f ea t u r e s c on fi g u r a b l e . fo r t h e mo r e de t a il s , p l eas e r e f e r t o t h e an10 8 c m t 22 1 0 a con f i g u r a t i o n gu i d e l i ne.
rfm210l w rev 1.0 | pa g e 15 / 17 e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com 6 . o r d e r i n g i n f o r m a t i o n rfm210lw - 433 s1 package operation band mode type p/n: rfm210lw - 315s1 rfm210lw module at 315 m hz band,smd packa g e p/n: rfm210lw - 433s1 rfm210lw module at 433 m hz band,smd packa g e
rfm210l w rev 1.0 | pa g e 16 / 17 e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com 7. packa g e o u t l i n e f i gu r e 13 s 1 p ac k a g e outline d r a wi
rfm210l w rev 1.0 | pa g e 17 / 17 e \ ma i l:sal e s @hoper f .co m w e b si t e://ww w .hoper f .com 8 . co n tact i n f o rm at i o n h o pe micr o e lect r o n i cs c o ., l td add: 2 / f , bu i ld i ng 3, pingshan pri v at e e nt e rprise science and t echnology p ar k , lishan r o a d, x i li t o wn, nanshan di s trict, shenzhen, guan g don g , china t el: 86 - 7 55 - 82 9 73805 fax: 86 - 75 5 - 82 9 73550 email: sales@ h operf.com w ebsite: http:/ / ww w . h o p erf.com htt p :/ / ww w .hop erf .cn h o pe micr o e lect r o n i cs c o ., l td add: 2 / f , bu i lding 3 , pingshan pri v at e e nt erprise sc i ence and t echnology p ar k , lishan r o a d, x i li t o wn, nanshan di s trict, shenzhen, guan g don g , china t el: 86 - 7 55 - 82 9 73805 fax: 86 - 75 5 - 82 9 73550 email: sales@ h operf.com w ebsite: http:/ / ww w . h o p erf.com htt p :/ / ww w .hop erf .cn this document m a y con t ain p r elim i na r y inform a tion and is subject to change b y h ope microelectronics w i t hout notice. h ope microelectronics assumes no responsibility o r liabili t y for a n y use of t he information con t ained herein. nothing in this do c ument shall operate as an e x p r ess or implied license o r indemni t y un d e r t he intellectual proper t y rig h t s of h ope microelectronics or third p ar ties. t he pr o duc t s described in this document are not intend e d for use in implan t ation or oth e r di r ect life support applications w h er e malfunction m a y result in the d i r ect p h y s ical ha r m or injury t o persons. no w arr a nt i es o f a n y ki n d, includi n g , but not lim i ted t o , the impli e d w arranties of m e cha n t a bili t y o r fitness for a a r ticular purp o se, are o f fered i n this do c um e n t . ?2006, h o pe m i c r oelec t roni c s c o., l t d. all rig h t s r e s erved.

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