ultra low power 32.768khz mems tcxo page 1 of 5 cmc159 - series r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n . w . 3 3 rd s t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . phone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? internet: http://www.raltron.com ultra low power: < 1 ? a fixed 32.768 khz no supply voltage external bypass capacitors required frequency stability over temperature as low as 5ppm small smd package 1.5 x 0.8 mm parameter symbol condition value unit min. typ. max. frequency nominal f 0 32.768 k hz supply voltage vs t a = - 40c to +85c 1.5 3.63 v core supply current is vs = 1 .8v , no load condition , lvcmos, t a = 25c vs = 3.63v max, t a = - 10c to +70c no load condition vs = 1.5v to 3.63v , t a = - 40c to +85c , no load condition is does not include output stage current or load. 0.9 9 1.52 ?????? ? a ? ??????? ? a operating temperature t a commercial industrial 0 - 40 +70 +85 ? c c frequency stability vs. temperature ( without initial offset ) f/ t a initial offset is defined as the frequency deviation from the nominal value at room temperature after reflow - 5 - 10 - 20 +5 +10 +20 ppm ppm ppm frequency stability vs. temperature ( with initial offset ) f/ t a initial offset is defined as the frequency deviation from the nominal value at room temperature after reflow - 10 - 13 - 22 +10 +13 +22 ppm ppm ppm frequency stability vs. supply voltage f/ vs vs= 1.8v10% vs= 1.5v ~ 3.63v - 0.75 - 1.5 +0.75 +1.5 ppm ppm power supply ramp t a = - 40c to +85c, 0 to 90% vs 100 ms start - up time t start t a = - 40c t a +6 0c, valid output t a = +6 0c t a +70 c, valid output t a = +70c t a +85c, valid output 180 300 350 380 ms ms ms long term frequency stability f/ t t a =25c , vs=3.3v - 1.0 +1.0 ppm period jitter rms cycles = 10,000,t a =25c , vs= 1.5v ~ 3.63v 35 ns long term jitter 81920 cycles ( 2.5 sec ), 100 samples 2.5 ? s p - p electrical specifications
ultra low power 32.768khz mems tcxo 2 of 5 cmc159 - series r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n . w . 3 3 rd s t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . phone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? internet: http://www.raltron.com lvcmos parameter symbol condition value min typ. max unit output levels v oh vs= 1.5v ~ 3.63v. i oh = - 1 ? a , 15 pf load 0.9 vs v v ol vs= 1.5v ~ 3.63v. i ol = 1 ? a, 15 pf load 0.1v s v duty cycle dc 4 8 52 % rise/ fall time tr/ tf 10 - 90% vs, 15 pf load, vs=1.5v to 3.63v 10 - 90% vs, 5 pf load, vs1.62v 100 200 50 ns ns nano drive tm programmable reduced swing output parameter symbol condition value min typ. max unit output levels v oh dc bias programmable output voltage high range vs=1.5v~3.63v, i oh = - 0.2 ?? a, 10pf load see table 1 0.6 to 1.225 v v ol dc bias programmable output voltage low range vs=1.5v~3.63v, i oh = 0.2 ?? a, 10pf load see table 1 0.35 to 0.80 v duty cycle dc 48 52 % rise/ fall time tr/ tf 30 - 70%( v ol / v oh ), 10 pf load 200 ns ac - couple programmable output swing v sw vs= 1.5v ~ 3.63v, 10 pf load , i oh / i ol =0.2 ?? a this output is intended for a receiver that is ac - coupled, see table 1 0.20 to 0.80 v programmable output voltage swing tolerance t a = - 40c to +85c, vs=1.5~3.63v - 0.055 0.055 v table1 . nanodrive tm output levels nanodrive tm v oh ( v ) v ol ( v ) swing ( mv ) d 26 1.2 0.6 60055 1.8v logic compatible d14 1.1 0.4 70055 1.8v logic compatible d74 0.7 0.4 30055 xtal compatible aa3 - - 30055 xtal compatible output characteristics
ultra low power 32.768khz mems tcxo 3 of 5 cmc159 - series r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n . w . 3 3 rd s t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . phone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? internet: http://www.raltron.com ? ? note: 1. oscillator output signal. when interfacing to an mcus xtal, the clk out is typically connected to the receiving ics x in pin. oscillator includes an internal driver. the output swing and operation is not dependent on capacitive loading. 2. connect to supply voltage 1.5vvs3.63v for operation over - 40c to +85c temperature range. under normal operation conditions , vs does not require external bypass / decoupling capacitor(s). internal power supply filtering will reject more than 150mv p - p with frequency components through 10mhz. pin symbol function 1 gnd electrical ground 2 output output signal 1 3 vs supply voltage 2 4 gnd electrical ground mechanical dimensions and pin functioning bottom view reconmended land pattern
ultra low power 32.768khz mems tcxo 4 of 5 cmc159 - series r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n . w . 3 3 rd s t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . phone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? internet: http://www.raltron.com reflow profile recommended solder reflow p rofile temperature min preheat t smin 150c temperature max preheat t smax 175 c time (t smin to t smax ) t s 60 - 180 sec. temperature t l 217c peak temperature t p 260c ramp - up rate r up 3c/sec max. ramp - down rate r down 6c/sec max. time within 5c of peak temperature t p 10 sec max. time t[25c] to peak temperature t[25c] to peak 1 0 sec. soldering mil - std - 883f, method 2003 moisture sensitivity level msl 1 at 260c temperature cycle jesd22, method a104 vibration mil - std - 883f, method 2007 mechanical shock mil - std - 883f, method 2002 storage temperature - 65 . +150c temp. [c] time [sec] t p t l t smax t smin ramp - up ramp - down critical zone t l to t p t[25c] to peak t s preheat t l t p reflow profile environmental
ultra low power 32.768khz mems tcxo 5 of 5 cmc159 - series r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n . w . 3 3 rd s t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . phone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? internet: http://www.raltron.com time t l 60 - 150 sec. series supply voltage (v) frequency stability temp range (c ) output signal - output frequency (k hz) c m c159 15: vs=1.5v~3.6 3 v a: 75 ppm b: 100ppm c: 200ppm u: - 1 0~70 v: - 40~85 1: lvcmos nanodrive tm reduced swing output setting options a: ac - coupled d: dc - coupled 26:d26 14:d14 74:d74 3:aa3 see table 1 - 32.768 approvals eng. approval, date: sp, 07 / 25 / 2016 created by, date: sp, 07 / 25 / 2016 revision: a ordering information
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