? semiconductor components industries, llc, 2011 august, 2011 ? rev. p2 1 publication order number: pcs3p2005a/d pcs3p2005a product preview general purpose peak emi reduction ic description pcs3p2005a is a versatile, 3.3 v/5 v, 1x spread spectrum frequency modulator designed to reduce electromagnetic interference (emi) at the clock source, allowing system wide reduction of emi of down stream clock and data dependent signals. the device allows significant system cost savings by reducing the number of circuit board layers ferrite beads, shielding and other passive components that are traditionally required to pass emi regulations. pcs3p2005a modulates the output of a 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 and most frequency generators. lowering emi by increasing a signal?s bandwidth is called ?spread spectrum clock generation.? pcs3p2005a accepts an input from an external reference clock and locks to a 1x modulated clock output. two logic pins s0 and d_c enable selecting one of the 4 different frequency deviations. refer to the deviation selection table for more details . frequency range selection pin enables operation in one of the two frequency ranges. pcs3p2005a operates over a supply voltage range of 5 v / 3.3 v. pcs3p2005a is available in 8 pin tssop and soic packages, over commercial and industrial temperature range. applications pcs3p2005a is targeted for use in a broad range of notebook and desktop pcs and consumer electronic applications. features ? 1x, lvcmos peak emi reduction ? input frequency: 10 mhz ? 30 mhz @ 3.3 v 30 mhz ? 100 mhz @ 5 v ? output frequency: 10 mhz ? 30 mhz @ 3.3 v 30 mhz ? 100 mhz @ 5 v ? four different frequency deviation selection ? selectable spread options: down spread and center spread ? frequency range selection ? supply voltage: 5 v 0.5 v 3.3 v 0.3 v ? 8 pin tssop, soic package ? commercial and industrial temperature range ? these are pb ? free devices this document contains information on a product under development. on semiconductor reserves the right to change or discontinue this product without notice. 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 modout frs s0 xout d_c clkin / xin 1 gnd tssop ? 8 t suffix case 948al pcs3p2005a
pcs3p2005a http://onsemi.com 2 figure 1. block diagram gnd modout vdd pll d_c s0 frs crystal oscillator xout clkin / xin table 1. absolute maximum ratings symbol parameter rating unit vdd, v in voltage on any input pin with respect to ground ? 0.5 to +7.0 v t stg storage temperature ? 65 to +125 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. pin description pin# pin name type description 1 clkin / xin i external reference clock input or crystal connection. 2 xout o crystal connection. if using an external reference, this pin must be left unconnected. 3 d_c i deviation selection. has an internal pull ? up resistor. refer to deviation selection table . 4 gnd p ground connection. 5 s0 i deviation selection. has an internal pull ? up resistor. refer to deviation selection table. 6 frs i frequency range selection. has an internal pull ? up resistor. 7 modout o buffered modulated clock output. 8 vdd p power supply for the entire chip (3.3 v/5 v). table 3. frequency range selection table frs frequency (mhz) 0 10 ? 30 1 30 ? 100 table 4. deviation selection table deviation (%) d_c s0 fs = 0 fs = 1 10 mhz 20 mhz 30 mhz 30 mhz 80 mhz 100 mhz 0 0 ? 4.5 ? 3.6 ? 1.7 ? 4.8 ? 3.6 ? 2.6 0 1 ? 2.6 ? 2 ? 1 ? 2.7 ? 2 ? 1.5 1 0 2.6 2 1 2.75 2 1.5 1 1 1.7 1.25 0.7 1.8 1.25 1
pcs3p2005a http://onsemi.com 3 table 5. operating conditions symbol parameter min max unit vdd (5v) supply voltage 4.5 5.5 v vdd (3.3v) supply voltage 3 3.6 v t a operating temperature commercial 0 +70 c industrial ? 40 +85 c l load capacitance 15 pf c in input capacitance 7 pf table 6. dc electrical characteristics for vdd = 5 v 0.5 v symbol parameter min typ max unit vdd operating voltage 4.5 5.0 5.5 v v il input low voltage gnd ? 0.3 0.8 v v ih input high voltage 2.0 vdd + 0.3 v i il input low current 100 a i ih input high current 100 a v ol output low voltage (i ol = 12 ma) 0.4 v v oh output high voltage (i oh = ? 12 ma) 2.5 v i cc static supply current (clkin / xin pulled to gnd) 12 ma i dd dynamic supply current (unloaded output) fs = 0 (@ 30 mhz) 34 ma fs = 1 (@ 100 mhz) 40 z out output impedance 30 table 7. ac electrical characteristics for vdd = 5 v 0.5 v symbol parameter min typ max unit clkin / xin input clock frequency frs = 0 10 30 mhz frs = 1 30 100 modout output clock frequency frs = 0 10 30 mhz frs = 1 30 100 t lh (notes 1, 2) output rise time (measured between 20% to 80%) 1.6 2 ns t hl (notes 1, 2) output fall time (measured between 80% to 20%) 1.2 1.6 ns t d (notes 1, 2) output duty cycle 45 50 55 % t jc (note 2) jitter (cycle ? to ? cycle) @ fs = 0, 24 mhz & fs = 1, 80 mhz 250 350 ps t on (notes 1, 2) pll lock time (stable vdd, valid clock presented on clkin / xin) 3 ms 1. all parameters are specified with 15 pf loaded output. 2. parameter is guaranteed by design and characterization. not 100% tested in production.
pcs3p2005a http://onsemi.com 4 table 8. dc electrical characteristics for vdd = 3.3 v 0.3 v symbol parameter min typ max unit vdd operating voltage 3 3.3 3.6 v v il input low voltage gnd ? 0.3 0.8 v v ih input high voltage 2.0 vdd + 0.3 v i il input low current 100 a i ih input high current 100 a v ol output low voltage (i ol = 12 ma) 0.4 v v oh output high voltage (i oh = ? 12 ma) 2.5 v i cc static supply current (clkin / xin pulled to gnd) 11 ma i dd dynamic supply current (unloaded output) fs = 0 (@ 30 mhz) 26 ma fs = 1 (@ 100 mhz) 32 z out output impedance 40 table 9. ac electrical characteristics for vdd = 3.3 v 0.3 v symbol parameter min typ max unit clkin / xin input clock frequency frs = 0 10 30 mhz frs = 1 30 100 modout output clock frequency frs = 0 10 30 mhz frs = 1 30 100 t lh (notes 3, 4) output rise time (measured between 20% to 80%) 1.9 2.5 ns t hl (notes 3, 4) output fall time (measured between 80% to 20%) 1.5 2 ns t d (notes 3, 4) output duty cycle 45 50 55 % t jc (note 3) jitter (cycle ? to ? cycle) @ fs = 0, 24 mhz & fs = 1, 80 mhz 250 350 ps t on (notes 3, 4) pll lock time (stable vdd, valid clock presented on clkin / xin) 3 ms 3. all parameters are specified with 15 pf loaded output. 4. parameter is guaranteed by design and characterization. not 100% tested in production.
pcs3p2005a 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
pcs3p2005a 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
pcs3p2005a http://onsemi.com 7 table 10. ordering information part number marking package type temperature pcs3p2005ag ? 08sr 3p2005ag 8 ? pin soic, tape and reel, green commercial pcs3p2005ag ? 08st 3p2005ag 8 ? pin soic, tube, green commercial pcs3p2005ag ? 08tr 3p2005ag 8 ? pin tssop, tape and reel, green commercial pcs3p2005ag ? 08tt 3p2005ag 8 ? pin tssop, tube, green commercial pcs3i2005ag ? 08sr 3i2005ag 8 ? pin soic, tape and reel, green industrial pcs3i2005ag ? 08st 3i2005ag 8 ? pin soic, tube, green industrial pcs3i2005ag ? 08tr 3i2005ag 8 ? pin tssop, tape and reel, green industrial pcs3i2005ag ? 08tt 3i2005ag 8 ? pin tssop, tube, 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. pcs3p2005a/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
|
