? semiconductor components industries, llc, 2010 july, 2010 -- rev. 1 1 publication order number: PCS3P8504A/d PCS3P8504A general purpose peak emi reduction ic functional description PCS3P8504A is a versatile, 3.3 v timing--safe ? peak 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 disabling 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 3.3 v supply, and is available in an 8--pin, wdfn(2 mm x 2 mm) package. general features ? 1x, lvcmos peak emi reduction ? input frequency: ? 15 mhz -- 50 mhz ? output frequency: ? 15 mhz -- 50 mhz ? analog deviation selection ? modrate selection option ? spread spectrum enable/disable ? supply voltage: 3.3 v 0.3 v ? 8--pin, wdfn 2 mm x 2 mm (tdfn) package ? these devices are pb--free, halogen free/bfr free and are rohs compliant application ? PCS3P8504A is targeted for consumer electronics application like dpf, mfp. wdfn8 case 511aq marking diagrams http://onsemi.com pin configuration see detailed ordering and shipping information in the package dimensions section on page 5 of this data sheet. ordering information PCS3P8504A 1 dam g g 1 da = specific device code m = date code g =pb--freedevice 1 2 3 4 8 7 6 5 xin/clkin xout sson gnd vdd ssextr mr modout
PCS3P8504A http://onsemi.com 2 vdd gnd sson modout mr pll xout xin/clkin ssextr crystal oscillator figure 1. block diagram table 1. pin description pin# pin name type description 1 xin / clkin i crystal connection or external reference clock input. 2 xout o crystal connection. if using an external reference, this pin should be left open. 3 sson i spread spectrum on/off. spread spectrum function enabled when high, disabled when low . has an internal pull--up resistor. 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. 7 ssextr i analog deviation selection th rough external resistor to gnd. 8 v dd p 3.3 v supply voltage. table 2. operating conditions symbol parameter min max unit v dd supply voltage 3 3.6 v t a operating temperature 0 70 ? c c l load capacitance 10 pf c in input capacitance 7 pf table 3. absolute maximum rating symbol parameter rating unit v dd ,v in voltage on any input pin with respect to ground --0.5to+4.6 v t stg storage temperature --65 to +125 ? c t s max. soldering temperature (10 sec) 260 ? c stresses exceeding maximum ratings may dam age the device. maximum ratings are stres s ratings only. functional operation above the recommended operating conditions is not imp lied. extended exposure to stresses above t he recommended operating conditions may affect device reliability.
PCS3P8504A http://onsemi.com 3 table 3. absolute maximum rating symbol unit rating parameter t j junction temperature 150 ? c t dv static discharge voltage (as per jedec std22-- a114--b) 2 kv stresses exceeding maximum ratings may dam age the device. maximum ratings are stres s ratings only. functional operation above the recommended operating conditions is not imp lied. extended exposure to stresses above t he recommended operating conditions may affect device reliability. table 4. dc electrical characteristics symbol parameter test conditions min typ max unit vdd 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 m a i ih input high current v in =v dd 25 m 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 m a i dd dynamic supply current unloaded output 20 ma z o output impedance 30 table 5. switching characteristics parameter test conditions min typ max unit input frequency* / modout 15 50 mhz duty cycle (notes 1 and 2) measured at v dd /2 45 50 55 % output rise time (notes 1 and 2) measured between 20% to 80% 1.8 ns output fall time (notes 1 and 2) measured between 80% to 20% 1.6 ns cycle--to--cycle jitter (note 2) unloaded output with ssextr open @ 27 mhz 150 250 ps pll lock time (note 2) stable power supply, valid clock presented on xin / clkin 3 ms *functionality with crystal is guaranteed by design and characterization. not 100% tested in production. 1. all parameters are specified with10 pf loaded outputs. 2. parameter is guaranteed by design and characterization. not 100% tested in production.
PCS3P8504A http://onsemi.com 4 typical crystal specifications fundamental at cut parallel resonant crystal nominal frequency 27 mhz frequency tolerance 50 ppm or better at 25 ? c operating temperature range -- 2 5 ? cto+85 ? c storage temperature -- 4 0 ? cto+85 ? c load capacitance (c p ) 18 pf shunt capacitance 7 pf maximum esr 25 note: c l is the load capacitance and rx is used to prevent oscillations at overtone frequency of the fundamental frequency. xout xin/clkin PCS3P8504A rx c l c l crystal r c l =2*(c p ?c s ), where c p = load capacitance of crystal from crystal vendor datasheet c s = stray capacitance due to c in ,pcb,traceetc. figure 2. typical crystal interface circuit switching waveforms t 2 t 1 v dd /2 v dd /2 v dd /2 output figure 3. duty cycle timing t 3 output t 4 20% 80% 20% 80% figure 4. output rise/fall time
PCS3P8504A http://onsemi.com 5 xin/clkin xout ssextr modout sson gnd vdd mr sson control mr control PCS3P8504A note: sson (pin#3) mr (pin#6): connect to v dd or gnd refer to pin description table for functionality details analog deviation control ssextr can be pulled high to turn off deviation vdd r1 external deviation control r c v dd noise reduction filter c l c l c l is the load capacitance for proper xtal operation v dd figure 5. application schematic 1 2 3 4 8 7 6 5 figure 6. deviation vs ssextr resistance chartat27mhz 0.0 0.5 1.0 1.5 2.0 2.5 0 50 100 150 200 250 300 resistance (k ) deviation ( %) 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 deviation ( %) resistance (k ) figure 7. deviation vs ssextr resistance chartat27mhz mr = 1 mr = 0 note: devicetodevicevar iation of deviation is 10% ordering information part number top marking temperature package type shipping ? PCS3P8504Ag--08cr da 0 ? cto+70 ? c 8--pin (2 mm x 2 mm) wdfn(tdfn) (pb--free) tape & reel ?for information on tape and reel specificat ions, including part orientation and tape si zes, please refer to our tape and reel packaging specifications brochure, brd8011/d. *a ?microdot? placed at the end of last row of marking or just below the last row toward the center of package indicates pb--free.
PCS3P8504A http://onsemi.com 6 package dimensions wdfn8 2x2, 0.5p case 511aq--01 issue a notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimension b applies to plated terminal and is measured between 0.15 and 0.30mm from terminal. c a seating plane d e 0.10 c a3 a a1 0.10 c dim a min millimeters 0.70 a1 0.00 a3 0.20 ref b 0.20 d 2.00 bsc e 2.00 bsc e 0.50 bsc pin one reference 0.05 c 0.05 c 8x a 0.10 c note 3 l e b b 4 5 8x 1 8 0.05 c 0.50 l *for additional information on our pb--free strategy and soldering details, please download the o n semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* 2.30 0.50 0.78 7x dimensions: millimeters bottom view 0.35 pitch 8x 0.80 0.05 0.30 0.60 max l1 detail a l optional constructions l detail b mold cmpd exposed cu optional construction -- -- -- l1 0.15 b top view side view e/2 1 package outline detail b detail a 2x 2x 8x recommended 0.88 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further noti ce 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 specifically disclaims any and all liability, including without limitation speci al, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performa nce may vary over time. all operating parameters, including ?typicals? must be validated for each custo mer application by customer?s techni cal experts. scillc does not conve y any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical impl ant into the body, or other applications intended to support or sustain life, or fo r any other application in which the failure of the scillc product could create a situation wher e personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unaut horized application, buyer shall indemnify and hold scillc and its offic ers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or in directly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such clai m alleges that scillc was negligent regarding the design or manufactur e of the part. scillc is an equal opportunity/affirmative action employer. this literature is subj ect to all applicable c opyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800--282--9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81--3--5773--3850 PCS3P8504A/d timing--safe is a trademark of semiconductor components industries, llc (scillc). 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 on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your loca l sales representative
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