? ? ? RFPT400 ------- low cost smd temperature compensated crystal oscillator for indoor wireless infrasture applications e.g femtocells ------- ------- the RFPT400 is a high stability smd tcvcxo designed and specified specifically to meet the short-term stability requirements for indoor wireless infra-structure products, e.g femtocells. ------- product description ------- the RFPT400 is a high stability smd tcvcxo designed and specified specifically to meet the short-term stability requirements for indoor wireless infra-structure products at a fraction of the cost of oven-stabilised oscillators. using rakon's advanced fourth-order analogue frequency compensation system 'pluto?', the tcvcxo achieves unrivalled control of frequency variation with respect to temperature over the critical indoor temperature range. the stability of the RFPT400 allows a local area base station (bs) to achieve the frequency accuracy requirements of etsi ts 125 104 without the need for minute-by-minute monitoring and adjustment. the bs's reliance on external sources of frequency compensation is reduced to an approximately once-per-week rate with a corresponding significant reduction in network load and infrastructure cost. ------- applications femtocell base stations ------- features 0c~70c, stability?100pb ------- specifications ----- 1.0 specification references line parameter description 1.1 model description RFPT400 1.2 rohs compliant yes. part numbers with suffix'lf' 1.3 package size available 5.0mm x 3.2mm ----- 2.0 frequency characteristics line parameter test condition value unit 2.1 frequency range frequency range available 10 to 30 mhz 2.2 frequency calibration frequency offset at 25c, sixty minutes after reflow 2 max ppm 2.3 frequency stability over temperature over 0c ~ 70c (df/dt 1c/min) at fixed supply voltage and load 0.08 to 0.25 ppm 2.4 temperature range operating temperature range over which temperature stability is measured 0 to 70 c 2.5 supply voltage stability 2% variation in supply voltage at 25c 10 max ppb 2.6 load sensitivity 2% variation in magnitude from 10k?//10pf 5 max ppb 2.7 long term stability ageing rate following reflow after day 1. (typical) 10 max ppb/day 2.8 long term stability ageing rate following reflow after day 7. (typical) 3 max ppb/day 2.9 long term stability ageing rate following reflow after day 30. (typical) 1 max ppb/day 2.10 long term stability long term stability after 1 year 1000 max ppb 2.11 long term stability long term stability after 5 years 1500 max ppb ----- 3.0 power supply line parameter test condition value unit 3.1 supply voltage typical: 3.3 v 3.2 current load 10k?//10pf 3 max ma ----- page 1
4.0 control voltage line parameter test condition value unit 4.1 control voltage range customisable on request. typical: 0.5 to 2.5 v 4.2 frequency tuning 4.5 to 10 ppm 4.3 port input impedance 100 k 4.4 slope positive 4.5 linearity in accordance with mil-prf-55310 0.2 max % 4.6 linearity in accordance with mil-prf-55310. typically 0.05% % ----- 5.0 oscillator output-clipped sinewave line parameter test condition value unit 5.1 output waveform clipped sinewave, dc coupled 5.2 output voltage level 0.8 to 2 vpp 5.3 output load resistance 10 k 5.4 output load capacitance 10 pf ----- 6.0 phase noise line parameter test condition value unit 6.1 ssb phase noise power density at 1hz offset typical values for a 19.2mhz oscillator at 25c -64 dbc/hz 6.2 ssb phase noise power density at 10hz offset typical values for a 19.2mhz oscillator at 25c -101 dbc/hz 6.3 ssb phase noise power density at 100hz offset typical values for a 19.2mhz oscillator at 25c -120 dbc/hz 6.4 ssb phase noise power density at 1khz offset typical values for a 19.2mhz oscillator at 25c -134 dbc/hz 6.5 ssb phase noise power density at 10khz offset typical values for a 19.2mhz oscillator at 25c -143 dbc/hz 6.6 ssb phase noise power density at 100khz offset typical values for a 19.2mhz oscillator at 25c -143 dbc/hz ----- 7.0 jitter line parameter test condition value unit 7.1 jitter frequency offset from carrier 10hz to 1mhz 1.7 max ps ----- 8.0 environmental line parameter description 8.1 vibration iec 60068-2-6, test fc. 10-60hz 1.5 mm displacement, 60-2000hz at 20gn, 4 hours in each of three mutually perpendicular axes at 1 octave per minute 8.2 shock iec 60068-2-27, test ea.: 1500gn acceleration for 0.5ms duration, half-sine pulse, 3 shocks in each direction along three mutually perpendicular axes 8.3 soldering smd product suitable for reflow soldering. peak temperature 260c. maximum time above 220 c, 60s 8.4 rohs parts are fully compliant with the european union directive 2002/95/ec on the restriction of the use of certain hazardous substances in electrical and electronic equipment. note these rohs compliant parts are suitable for assembly using both lead-free solders and tin/lead solders 8.5 storage temperature range -55c to 125c 8.6 humidity 85% for 48 hours at 85c, non-condensing ----- page 2
9.0 pin connections line parameter description 9.1 pin 1 control voltage, vc 9.2 pin 2 ground 9.3 pin 3 output 9.4 pin 4 supply voltage, vs 9.5 note for correct operation a 10nf supply de-coupling capacitor should be placed next to the device, see recommended pcb pattern. if an ac coupled output is required a 10nf should be placed in series with output pad 3 ----- 10.0 marking line parameter description 10.1 type laser marked 10.2 line 1 r and manufacturing identifier (x xx) (see model drawing diagram) 10.3 line 2 pad 1/static sensitivity identifier (?), abbreviated part number (0000), device date code (yw) (see model drawing diagram) ----- 11.0 manufacturing information line parameter description 11.1 reflow solder reflow processes as per profile attached (see reflow profile diagram). solderability: mil-std-202, method 208, category 3 11.2 packaging description part numbers with suffix 't' will be supplied on tape and reel ------- page 3
drawing name: RFPT400 model drawing page 4
drawing name: RFPT400 series reflow profile page 5
|
