? semiconductor components industries, llc, 2011 august, 2011 ? rev. 2 1 publication order number: p2010a/d p2010a low frequency emi reduction ic description the p2010a is a selectable spread spectrum frequency modulator designed specifically for pc peripheral and embedded controller markets. the p2010a reduces electromagnetic interference (emi) at the clock source which provides system wide reduction of emi of all clock dependent signals. the p2010a allows significant system cost savings by reducing the number of circuit board layers and shielding that are traditionally required to pass emi regulations. the p2010a uses the most efficient and optimized modulation profile approved by the fcc and is implemented in a proprietary all ? digital method. the p2010a modulates the output of a single pll in order to ?spread? the bandwidth of a synthesized clock and, more importantly, decreases the peak amplitudes of its harmonics. this results in significantly lower system emi compared to the typical narrow band signal produced by oscillators an d most frequency generators. lowering emi by increasing a signal?s bandwidth is called ?spread spectrum clock generation.? applications the p2010a is targeted towards the embedded controller market and pc peripheral markets including scanners, facsimile, mfp?s, printers, pda, ia, and gps devices. features ? fcc approved method of emi attenuation ? provides up to 20 db of emi suppression ? generates a low emi spread spectrum clock of the input frequency ? optimized for 10 mhz to 35 mhz input frequency range ? internal loop filter minimizes external components and board space ? 4 selectable spread ranges ? sson control pin for spread spectrum enable and disable options ? low cycle ? to ? cycle jitter ? wide operating range (3 v to 5 v) ? 16 ma output drives ? ttl or cmos compatible outputs ? low power cmos design ? available in 8 ? pin soic and tssop packages ? these are pb ? free devices http://onsemi.com soic ? 8 s suffix case 751bd pin configuration (top view) see detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. ordering information vdd sr0 modout sson xout fs0 xin / clk 1 vss tssop ? 8 t suffix case 948al p2010a
p2010a http://onsemi.com 2 figure 1. block diagram crystal oscillator xout xin modout fs0 output divider pll vdd vco loop filter sr1 sson vss modulation feedback divider frequency divider phase detector table 1. absolute maximum ratings symbol parameter rating unit v dd , v in voltage on any pin with respect to ground ? 0.5 to +7 v t stg storage temperature ? 65 to +125 c t a operating temperature ? 40 to +85 c t s max. soldering temperature (10 sec) 260 c t j junction temperature 150 c t dv static discharge voltage (as per jedec std22 ? a114 ? b) 2 kv stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. table 2. dc electrical characteristics symbol parameter min typ max unit v il input low voltage gnd ? 0.8 v v ih input high voltage 2.0 ? vdd+0.3 v i il input low current (pull ? up resistor on inputs sr0, fs0) ? ? ? 35 a i ih input high current (pull ? down resistor on input sson) ? ? 35 a i xol xout output low current (@ 0.4 v, vdd = 3.3 v) ? 3 ? ma i xoh xout output high current (@ 2.5 v, vdd = 3.3 v) ? 3 ? ma v ol output low voltage (vdd = 3.3 v, i ol = 20 ma) ? ? 0.4 v v oh output high voltage (vdd = 3.3 v, i oh = 20 ma) 2.5 ? ? v i dd static supply current ? 0.6 ? ma i cc dynamic supply current (3.3 v and 15 pf loading) 4 6 8 ma vdd operating voltage 2.7 3.3 5.5 v t on power up time (first locked clock cycle after power up) ? 0.18 ? ms z out clock output impedance ? 50 ?
p2010a http://onsemi.com 3 table 3. ac electrical characteristics symbol parameter min typ max unit f in input frequency 10 20 35 mhz t lh (note 1) output rise time (measured at 0.8 v to 2.0 v) 0.7 0.9 1.1 ns t hl (note 1) output fall time (measured at 2.0 v to 0.8 v) 0.6 0.8 1.0 ns t jc jitter (cycle ? to ? cycle) ? ? 360 ps t d output duty cycle 45 50 55 % 1. t lh and t hl are measured into a capacitive load of 15 pf. table 4. pin description pin# pin name type description 1 xin / clk i connect to crystal or externally generated clock signal. 2 xout i connect to crystal. no connect if externally generated clock signal is used. 3 fs0 i digital logic input used to select input frequency range (see table 5). this pin has an internal pull ? up resistor. 4 vss p ground connection. connect to system ground. 5 sson i digital logic input used to enable spread spectrum function (active low). spread spectrum function enable when low. this pin has an internal pull ? low resistor. 6 modout o spread spectrum clock output. 7 sr0 i digital logic input used to select spreading range (see table 5). this pin has an internal pull ? up resistor. 8 vdd p connect to +3.3 v or +5.0 v. table 5. spread range selection fs0 sr0 spreading range input frequency modulation rate 1 0 1.50% 10 mhz to 20 mhz (fin/10)*20.83 khz 1 1 2.50% 10 mhz to 20 mhz (fin/10)*20.83 khz 0 0 1.25% 20 mhz to 35 mhz (fin/10)*20.83 khz 0 1 2.00% 20 mhz to 35 mhz (fin/10)*20.83 khz
p2010a http://onsemi.com 4 spread spectrum selection table 5 illustrates the possible spread spectrum options. the optimal setting should minimize system emi to the fullest without af fecting system performance. the spreading is described as a percentage deviation of the center frequency. (note: the center frequency is the frequency of the external reference input on xin / clk, pin 1). example of a typical printer or scanner application that operates on a clock frequency of 16 mhz: a spreading selection of fs0=1 and sr0=1 provides a percentage deviation of 2.50%* (see table 5) of center frequency. this results in the frequency on modout being swept from 16.40 mhz to 15.60 mhz at a modulation rate of 33.33 khz (see table 5). this particular example (see figure 2 below) given here is a common emi reduction method for scanner, printer or embedded applications and has already been adopted by most of the leading manufacturers. note: spreading range selection varies from different system manufacturers and their designs. figure 2. p2010a application schematic for flat ? bed scanner p2010a connected to clk input pin of the system. vdd 0.1 f 16 mhz crystal input vdd sr0 modout sson xin / clk xout fs0 vss 1 2 3 4 8 7 6 5
p2010a http://onsemi.com 5 package dimensions tssop8, 4.4x3 case 948al ? 01 issue o e1 e a2 a1 e b d c a top view side view end view 1 l1 l notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec mo-153. symbol min nom max a a1 a2 b c d e e1 e l1 0o 8o l 0.05 0.80 0.19 0.09 0.50 2.90 6.30 4.30 0.65 bsc 1.00 ref 1.20 0.15 1.05 0.30 0.20 0.75 3.10 6.50 4.50 0.90 0.60 3.00 6.40 4.40
p2010a http://onsemi.com 6 package dimensions soic 8, 150 mils case 751bd ? 01 issue o e1 e a a1 h l c e b d pin # 1 identification top view side view end view notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec ms-012. symbol min nom max a a1 b c d e e1 e h 0o 8o 0.10 0.33 0.19 0.25 4.80 5.80 3.80 1.27 bsc 1.75 0.25 0.51 0.25 0.50 5.00 6.20 4.00 l 0.40 1.27 1.35
p2010a http://onsemi.com 7 table 6. ordering information part number marking package type temperature p2010af ? 08st p2010af 8 ? pin soic, tube, pb free commercial p2010af ? 08sr p2010af 8 ? pin soic, tape and reel, pb free commercial p2010ag ? 08st p2010ag 8 ? pin soic, tube, green commercial p2010ag ? 08sr p2010ag 8 ? pin soic, tape and reel, green commercial i2010af ? 08st i2010af 8 ? pin soic, tube, pb free industrial i2010af ? 08sr i2010af 8 ? pin soic, tape and reel, pb free industrial i2010ag ? 08st i2010ag 8 ? pin soic, tube, green industrial i2010ag ? 08sr i2010ag 8 ? pin soic, tape and reel, green industrial p2010af ? 08tt p2010af 8 ? pin tssop, tube, pb free commercial p2010af ? 08tr p2010af 8 ? pin tssop, tape and reel, pb free commercial p2010ag ? 08tt p2010ag 8 ? pin tssop, tube, green commercial p2010ag ? 08tr p2010ag 8 ? pin tssop, tape and reel, green commercial i2010af ? 08tt i2010af 8 ? pin tssop, tube, pb free industrial i2010af ? 08tr i2010af 8 ? pin tssop, tape and reel, pb free industrial i2010ag ? 08tt i2010ag 8 ? pin tssop, tube, green industrial i2010ag ? 08tr i2010ag 8 ? pin tssop, tape and reel, green industrial on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y 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 wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey 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 implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. p2010a/d 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 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 local sales representative
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