m/a-com ltd. north america: tel. (800) 366-2266 n asia/paci?: tel. +81 (03) 3226-1671 n europe: tel. +44 (1344) 869 595 fax (800) 618-8883 fax +81 (03) 3226-1451 fax +44 (1344) 300 020 surface mount frequency synthesizer data 1005 - 1065 mhz MLS9900-01035 preliminary speci?ations 1 this preliminary speci?ations data sheet contains typical electrical speci?ations which may change prior to final introduction. v1.00 parameter test conditions units min. typ. max. frequency range (fout) mhz 1005 1065 rf output power 2 1005 - 1065 mhz dbm -2.0 +2.0 supply voltage (v cc1 ) v +4.75 +5.00 +5.25 supply current (i cc1 )ma20 supply voltage (v cc2 ) v +4.75 +5.00 +5.25 supply current (i cc2 )ma10 reference frequency (f r ) 3 0.5 - 2.0 v pk - pk sine wave mhz 1 20 phase noise 4 ssb at 10 khz offset from carrier dbc/hz -100 -95 residual phase noise 50 hz to 100 khz degrees 6.5 frequency step size ( ? f) khz 12.5 lock up time 5 f o 1 khz band edge to edge ms 40 lock up time between adjacent channels ms 20 harmonic outputs dbc -20 -10 spurious outputs f o 12.5 khz dbc -80 -75 output impedance ohm 50 electrical speci?ations 1 , t a = +25?, v cc = +5v (unless otherwise stated) features miniature size surface mount package electrically shielded low phase noise integral buffer ampli?r description the MLS9900-01035 frequency synthesizer combines a phase locked loop circuit with a high performance buffered vco in an rfi screened surface mount package. the synthesizer is optimised for mobile data service applications with 12.5 khz or 25 khz rf channel spacing. a +5v power supply and serial data input are required. the surface mount package used provides for electrical shielding, ease of assembly and repeatable performance. m/a-com? surface mount manufacturing techniques, automatic assembly and electrical testing ensure a high degree of electrical and mechanical repeatability at low cost and in high volume. manufacturing is carried out in an iso 9000 quali?d facility. l l l l l 1. all speci?ations apply with a 50 ohm load impedance. 2. output power window includes unit to unit variation, temperature effects -30? to +70? and frequency ?tness. 3. reference frequency input impedance 10 kohm min. 4. for typical phase noise at other offsets see phase noise curve. 5. integral lock detector, output high locked.
m/a-com ltd. north america: tel. (800) 366-2266 n asia/paci?: tel. +81 (03) 3226-1671 n europe: tel. +44 (1344) 869 595 fax (800) 618-8883 fax +81 (03) 3226-1451 fax +44 (1344) 300 020 surface mount frequency synthesizer MLS9900-01035 2 this preliminary speci?ations data sheet contains typical electrical speci?ations which may change prior to final introduction. v1.00 1. exceeding these limits may cause permanent damage. 2. a series resistor will allow operation at any greater supply voltage. used in conjunction with a bypass capacitor this will yield improved power supply decoupling and noise suppression. 3. static sensitive, observe appropriate precautions. parameter absolute maximum supply voltage (v cc1 ) 2 +6.5v supply voltage (v cc2 ) 2 +6.5v reference frequency voltage -0.3v to +6.5v data, clock, strobe voltages -0.3v to +6.5v storage temperature -40? to +80? solder assembly temperature 220? max for 10s absolute maximum ratings 1, 3 environmental speci?ations devices are designed to operate over the temperature range of -30? to +70? and after exposure to the shock, vibration, thermal shock and moisture conditions typically encountered in base station and subscriber terminal environments. lead con?uration lead con?uration 1 ground 7 ground 2 clock input 8 reference frequency input 3v cc1 (vco) 9 v cc2 (pll) 4 lock detector 10 data input output 5 rf output 11 strobe input 6 ground 12 ground functional con?uration package dimensions 1.0 typ. 13.6 max 10.0 6 max 12.1 14.6 0.8 0.2 2.0 typ. 0.3 flat typ. 2.00 10.00 12.40 7 8 11 12 10 9 6 5 4 3 2 1 lead material 0.13mm thick pre-tinned with 60sn : 40pb solder detail a detail a 1.60 0.30 0.60 1.50 circuit board footprint
m/a-com ltd. north america: tel. (800) 366-2266 n asia/paci?: tel. +81 (03) 3226-1671 n europe: tel. +44 (1344) 869 595 fax (800) 618-8883 fax +81 (03) 3226-1451 fax +44 (1344) 300 020 3 this preliminary speci?ations data sheet contains typical electrical speci?ations which may change prior to final introduction. surface mount frequency synthesizer MLS9900-01035 3 v1.00 typical performance @ +25? phase noise -160 -140 -120 -100 -80 -60 -40 frequency offset from carrier (hz) phase noise (dbc/hz) 10 100 1k 10k 100k 1m phase noise -2.0 -1.0 0.0 1.0 2.0 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 frequency (ghz) output power (dbm) output power harmonics -80 -60 -40 -20 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 frequency (ghz) harmonics (dbc) fo 2fo 3fo 4fo harmonics -100 -80 -60 -40 -20 0 -10.0 0.0 10.0 20.0 30.0 40.0 50.0 time (ms) output (db) switching speed measured using hp8561e spectrum analyser rbw 1 khz, vbw 1 khz, span 0 hz, swp 50 ms.
surface mount frequency synthesizer MLS9900-01035 v1.00 m/a-com ltd. north america: tel. (800) 366-2266 n asia/paci?: tel. +81 (03) 3226-1671 n europe: tel. +44 (1344) 869 595 fax (800) 618-8883 fax +81 (03) 3226-1451 fax +44 (1344) 300 020 4 this preliminary speci?ations data sheet contains typical electrical speci?ations which may change prior to final introduction. for example with a 19.2 mhz reference frequency, to set the output frequency to 1035 mhz with a 12.5 khz step size the following data words are required. prescalar range = 128, therefore s = 0 therefore the reference word is 0 00011000000000 1 s r13 ................r0 control bit m = integer of a = therefore the frequency word is 01010000110 1110000 0 m10 ....... m0 a6.....a0 control bit once the reference word has been sent, only the 19 bit frequency word need be sent to change the output frequency if the reference and step size remain constant. data clock strobe tw ts th to tw ref: freq: m10 s m9 r13 m8 r12 a0 r0 0 1 set-up time (ts), hold time (th), clock and strobe pulsewidths (tw) and strobe offset time (to) all to be greater than 100 nanosec. 1035 12 5 646 1010000110 x 10 x 10 x 1 128 binary 6 3 . ? ? ? ? == 1035 12 5 646 x 10 x 10 x 1 128 x 128 = 112 = 1110000 bi nary 6 3 . ? ? ? ? - ? ? timing diagram programming information the output frequency of the synthesizer is serially programmed using the data input by sending a 16 bit reference word and a 19 bit frequency word with the clock input. each word is followed by a strobe input pulse which must occur while the clock input is low. the data input timing is shown below. the 16 bit reference word sends the prescalar range (s) (s = 0 for the prescalar range of 128 used), the reference division ratio (r) as a 14 bit binary number and a control bit. the 19 bit frequency word sends the number of prescalar division cycles (m) as an 11 bit binary number, the number of p + 1 divisions (a) as a 7 bit binary number and a control bit. where: m = integer of a = and r, m and a are all integers with m 3 a. the output frequency is then determined by the following formula: r= f f r d f f x out d ? ? ? ? 1 128 f f x 1 128 m x128 out d ? ? ? ? - ? ? f out = 128xm a x f r r ? ? ? ? ? ? + r= f f x 10 x 10 binary r 6 3 d === 19 2 12 5 1536 11000000000 . .
|
