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pcs3p8504a general purpose peak emi reduction ic ?2010 scillc. all rights reserved. publication order number: january 2010 C rev. 1 pcs3p8504 /d general features 1x, lvcmos peak emi reduction input frequency: 15 mhz - 40 mhz @ 2.5 v 15 mhz - 50 mhz @ 3.3 v output frequency : 15 mhz - 40 mhz @ 2.5 v 15 mhz - 50 mhz @ 3.3 v analog deviation selection modrate s election option spread spectrum enable/disable supply voltage: 2.5v 0.2v 3.3v 0.3v 8pin tssop, tdfn (2mmx2mm) packages commercial and industrial temperature range functional description pcs3p8504a is a versatile, 3.3v/2.5v pea k emi reduction ic. pcs3p8504a accepts an input clock either from a fundamental crystal or from an external reference (ac or dc coupled to xin / clkin) and locks on to it delivering a 1x modulated clock output. pcs3p8504a has a sson pin for enabling and di sabling spread spectrum function. pcs3p8504a has an ssextr pin to select different deviations depending upon the value of an external resistor connected between ssextr and gnd. modulation rate (mr) control selects one of the two different modulation rates. pcs3p8504a operates from a 3.3v/2.5v supply , and is available in an 8 pin tssop and tdfn (2 mm x2 mm ) packages, over commercial and industrial temperature range. application pcs3p8504a is targeted for consumer electronics application like dpf, mfp. bl ock diagram vdd gnd sson modout mr pll xout xin / clkin ssextr crystal oscillator
pcs3p8504a rev. 1 | page 2 of 11 | www.onsemi.com xin / clkin sson 1 2 3 4 5 6 7 8 modout ssextr vdd gnd mr pcs3p8504a xout pin configuration pin description pin # pin name pin type description 1 xin / clkin i crystal connection or external reference clock input. 2 xout o crystal connection. if using an extern al reference, this pin should be left open. 3 sson i s pread spectrum on /off . spread spectrum function enabled when high , disabled when low . has an internal pull - up resistor inside. 4 gnd p ground . 5 modout o modulated clock output . 6 mr i modulation rate select. when low selects low modulation rate. selects high modulation rate when pulled high. has an internal pull - up resistor inside. 7 ssextr i analog deviation selection through external resistor to gnd. 8 v dd p 2.5v/ 3.3v supply voltage. freque ncy selection table vdd (v) frequency (mhz) 2.5 15 - 40 3.3 15 - 50 operating conditions parameter description min max unit v dd supply voltage 2.3 3.6 v t a operating temperature commercial 0 +70 c industrial - 40 +85 c l load capacitance 10 pf c in input capacitance 7 pf
pcs3p8504a rev. 1 | page 3 of 11 | www.onsemi.com absolute maximum rating symbol parameter rating unit v dd , v in voltage on any input pin with respect to ground - 0.5 to +4.6 v t stg storage temperature - 65 to +125 c t s max. soldering temperature (10 sec) 260 c t j ju nction temperature 150 c t dv static discharge voltage (as per jedec std22 - a114 - b) 2 kv note: these are stress ratings only and are not implied for functional use. exposure to absolute maximum ratings for prolonge d periods of time may affect device reliability. dc electrical characteristics for 2.5v parameter description test conditions min typ max unit v dd supply voltage 2.3 2.5 2.7 v v il input low voltage 0.7 v v ih input high voltage 1.7 v i il input low current v in = 0v 25 a i ih input high current v in = v dd 25 a v ol output low voltage i ol = 8ma 0.6 v v oh output high voltage i oh = - 8ma 1.8 v i cc static supply current xin / clkin pulled low 50 a i dd dynamic supply current unloaded output 14 ma z o output impe dance 35 switching characteristics for 2.5v parameter test conditions min typ max unit input frequency 1 / modout 15 40 mhz duty cycle 2 , 3 measured at v dd /2 45 50 55 % output rise time 2 , 3 measured between 20% to 80% 2.2 ns output fall tim e 2 , 3 measured between 80% to 20% 2 ns cycle - to - cycle jitter 3 unl oaded output with ssextr open @ 27mhz 175 ps pll lock time 3 stable power supply, valid clock pre sented on xin / clkin 3 ms note s: 1. functionality with crystal is guaranteed by d esign and characterization. not 100% tested in production. 2 . all parameters are specified with 10pf loaded outputs. 3 . parameter is guaranteed by design and characterization. not 100% tested in production .
pcs3p8504a rev. 1 | page 4 of 11 | www.onsemi.com dc electrical characteri stics for 3.3v parameter description test conditions min typ max unit v dd supply voltage 3.0 3.3 3.6 v v il input low voltage 0.8 v v ih input high voltage 2.0 v i il input low current v in = 0v 25 a i ih input high current v in = v dd 25 a v ol output low voltage i ol = 8ma 0.4 v v oh output high voltage i oh = - 8ma 2.4 v i cc static supply current xin / clkin pulled low 50 a i dd dynamic supply current unloaded output 20 ma z o output impedance 30 switching characteristics for 3. 3v parameter test conditions min typ max unit input frequency 1 / modout 15 50 mhz duty cycle 2 , 3 measured at v dd /2 45 50 55 % output rise time 2 , 3 measured between 20% to 80% 1.8 ns output fall time 2 , 3 measured between 80% to 20% 1.6 ns cycl e - to - cycle jitter 3 unl oaded output with ssextr open @ 27mhz 150 ps pll lock time 3 stable power supply, valid clock pre sented on xin / clkin 3 ms note s : 1. functionality with crystal is guaranteed by design and characterization. not 100% tested i n production. 2 . all parameters are specified with10pf loaded outputs. 3 . parameter is guaranteed by design and characterization. not 100% tested in production.
pcs3p8504a rev. 1 | page 5 of 11 | www.onsemi.com typical crystal specifications fundamental at cut parallel reso nant crystal nominal frequency 27 mhz frequency tolerance 50 ppm or better at 25c operating temperature range - 25c to +85c storage temperature - 40c to +85c load capacitance (c p ) 18pf shunt capacitance 7pf maximum esr 25 note: c l is the load c apacitance and r x is used to prevent oscillations at overtone frequency of the fundamental frequency. typical crystal interface circuit switching waveforms duty cycle timing output rise/fall time c l = 2*(c p C c s ), where c p = load c apacitance of c rystal from crystal vendor datasheet. c s = stray c apacitance due to c in, pcb, trace , etc. xout xin / clkin pcs3p 8504 a r x c l c l crystal r t 3 output t 4 20% 80% 20% 80% t 2 t 1 v dd /2 v dd /2 v dd /2 output
pcs3p8504a rev. 1 | page 6 of 11 | www.onsemi.com application schematic note: for ac coupled interface refer to application brief : ct100801 . deviation vs ssextr resistance charts at 27mhz sson control mr control pcs3p 8504 a note: sson (pin#3) mr (pin#6): connect to vdd or gnd refer to pin description table for functionality details . analog deviation control ssextr can be pulled high to turn off deviation. xin/clkin xout ssextr modout sso n gnd 1 2 3 4 5 7 8 vdd mr 6 vdd r1 external deviation control r c vdd noise reduction filter c l c l is the load capacitance for proper xtal operation . vdd deviation vs ssextr resistance @ 27mhz 0.0 0.5 1.0 1.5 2.0 2.5 0 50 100 150 200 250 300 resistance(k?) deviation(%) mr=0
pcs3p8504a rev. 1 | page 7 of 11 | www.onsemi.com note: device to device variat ion of deviation is 10% . deviation vs ssextr resistance @ 27mhz 0.0 0.5 1.0 1.5 2.0 2.5 0 50 100 150 200 250 300 350 400 450 500 550 600 650 resistance(k?) deviation(%) mr=1
pcs3p8504a rev. 1 | page 8 of 11 | www.onsemi.com package information 8 - lead tssop package (4.40 - mm body) symbol dimensions inches millimeters min max min max a 0.043 1.10 a1 0.002 0.006 0.05 0.15 a2 0.033 0.037 0.85 0.95 b 0.008 0.012 0.19 0.30 c 0.004 0.008 0.09 0.20 d 0.114 0.122 2.90 3.10 e 0.169 0.177 4.30 4.50 e 0.026 bsc 0.65 bsc h 0.252 bsc 6.40 bsc l 0.020 0.028 0.50 0.70 0 8 0 8 e h a a1 a2 d b c l e
pcs3p8504a rev. 1 | page 9 of 11 | www.onsemi.com t dfn (2mmx2mm) 8l package outline drawing symbol dimensions inches millimeters min max min max a 0.027 0.0315 0.70 0.80 a 3 0.008 bsc 0.203 bsc b 0.008 0 .012 0.20 0.30 d 0.079 bsc 2.00 bsc e 0.078 bsc 2.00 bsc e 0.020 bsc 0.50 bsc l 0.020 0.024 0.50 0.60
pcs3p8504a rev. 1 | page 10 of 11 | www.onsemi.com ordering code part number marking package temperature pcs3p8504ag - 08 - tr 3p8504ag 8 - pin tssop, tape and reel, green commercial pcs3p8504ag - 08 - tt 3p8504ag 8 - pin tssop, tube, green commercial pcs3p8504ag - 08 cr bw1 llyw 8 - pin 2 - mm tdfn col - tape & reel, green commercial pcs3i8504ag - 08 - tr 3i8504ag 8 - pin tssop, tape and reel, green industrial pcs3i8504ag - 08 - tt 3i8504ag 8 - pin tssop, tube, green i ndustrial pcs3i8504ag - 08 - cr bw2 llyw 8 - pin 2 - mm tdfn col - tape & reel, green industrial ll = 2 character lot # yw=year and work week code device ordering information p c s 3 p 8 5 0 4 a g - 08 - tt o = tsot23 u = msop j=tsot26 s = soic e = tqfp c=tdfn (2 mm x2 mm ) t = tssop l = lqfp a = ssop u = msop v = tvsop p = pdip b = bga d = qsop q = qfn x = sc - 70 device pin cou nt x= automotive i= industrial p or n/c = commercial ( - 40c to +125c) ( - 40c to +85c) (0c to +70c) 1 = clock generator 6 = power management 2 = non pll based 7 = power management 3 = emi reduction 8 = power management 4 = ddr support products 9 = hi performance 5 = std zero delay buffer 0 = reserved on semiconductor mixed signal product part number f = lead free and rohs compliant part g = green package, lead free, and rohs r = tape & reel, t = tube or tray
pcs3p8504a note: many on semiconductor products are prote cted by issued patents or applications for patent. on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifical ly disclaims any and all lia bility, including without limitation special, consequential or incidental damages. typical parameters which may be provided in scil ll operating parameters, including typicals must be publication ordering information literature fulfillment: literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone: 303 - 675 - 2175 or 800 - 344 - 3860 toll free usa/canada fax: 303 - 675 - 2176 or 800 - 344 - 3867 toll free usa/canada email: orderlit@onsemi.com n. american technical support : 800 - 282 - 9855 toll free usa/canada europe, middle east and africa technical support: phone: 4 21 33 790 2910 japan customer focus center phone: 81 - 3 - 5773 - 3850 on semiconductor website: www.onsemi.com order literature: http://www.onsemi.com/orderlit for additional informa tion, please contact your local sales representative

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