april 2007 P1727 rev 0.2 notice: the information in this document is subject to change without notice. pulsecore semiconductor 1715 s. bascom ave suite 200, campbell, ca 95008 ? tel: 408-879-9077 ? fax: 408-879-9018 www. p ulsecoresemi.com low power notebook lcd panel emi reduction ic features ? fcc approved method of emi attenuation ? generates a low emi spread spectrum of the input clock frequency ? optimized for frequency range: P1727x: 20mhz to 40mhz ? internal loop filter minimizes external components and board space ? 8 different frequency deviations ranging from +/-0.625% to ?3.50% ? low inherent cycle-to-cycle jitter ? 3.3v operating voltage ? supports notebook vga and other lcd timing controller applications ? available in 8 pin soic and tssop ? qualified for industrial temp spec. (-40c to +85c) product description the P1727 is a versatile spread spectrum frequency modulator designed specifically for a wide range of clock frequencies. the P1727 reduces electromagnetic interference (emi) at the clock source, allowing system wide reduction of emi of down stream (clock and data dependent signals). the P1727 allows significant system cost savings by reducing the number of circuit board layers and shielding that are traditionally required to pass emi regulations. the P1727 modulates the output of a single pll in order to ?spread? the bandwidt h of a synthesized clock, thereby decreasing the peak amplitudes of its harmonics. this result in si gnificantly lower system emi compared to the typical narrow band signal produced by oscillators and most clock generators. lowering emi by increasing a signal?s bandwidth is called ?spread spectrum clock generation?. the P1727 uses the most efficient and optimized modulation profile approved by the fcc and is implemented by using a proprietary all-digital method. applications the P1727 is targeted towards notebook lcd displays, other displays using an lvds interface, pc peripheral devices and embedded systems. block diagram clkin vss loop filter modulation vdd frequency divider feedback divider phase detector vco pll pdb output divider refout modout
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 2 of 9 notice: the information in this document is subject to change without notice. pin configuration table 1 ? power down selection pdb spread spectrum modout pll mode 0 n/a disabled disabled power down 1 on normal normal normal table 2 frequency deviation selection p/ n deviation p/n deviation P1727a -1.25% P1727e +/-0.625% P1727b -1.75% P1727f +/-0.875% P1727c -2.50% P1727g +/-1.25% P1727d -3.50% P1727h +/-1.75% pin description pin# pin name type description 1 clkin i external reference frequency input. connect to externally generated reference signal. 2 vdd p connect to +3.3v 3 vss p ground connection. connect to system ground. 4 modout o spread spectrum clock output 5 refout o reference output. 6 nc no connect 7 nc no connect 8 pdb i powerdown pin.pull low to disable spread spectrum clock output. nc refout 1 2 3 4 5 6 7 8 P1727 clkin vdd vss modout nc pdb
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 3 of 9 notice: the information in this document is subject to change without notice. P1727 clkin vdd nc refout vss modout nc 1 2 3 4 5 6 7 8 pdb 0.1 f tie low to enable p owerdown mode. 27mhz pixel clock input schematic for notebook vga application absolute maximum ratings symbol parameter rating unit vdd, v in voltage on any pin with respect to ground -0.5 to +7 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 note: these are stress ratings only and are not implied for functional use. exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. vdd modout clock reference clock o/p
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 4 of 9 notice: the information in this document is subject to change without notice. dc electrical characteristics symbol parameter min typ max unit v il input low voltage vss ? 0.3 0.8 v v ih input high voltage 2.0 vdd +0.3 v i il input low current -35 a i ih input high current 35 a v ol output low current vdd = 3.3v, i ol = 20ma 0.4 v v oh output high current vdd = 3.3v, i oh = 20ma 2.5 v i dd static supply current (clkin, pdb pulled low) 2 ma i cc dynamic supply current (no load) 14 18 ma v dd operating volt age 3.0 3.3 3.6 v t on power up time (first locked clo ck cycle after power up) 0.18 ms z out clock output impedance 50 ? t a operating temperature 0 70 c ac electrical characteristics symbol parameter min typ max unit f in input frequency: P1727x 20 40 mhz f out output frequency P1727x 20 40 mhz t lh 1 output rise time measured from 0.8v to 2.0v 0.7 0.9 1.1 ns t hl 1 output fall time measured from 2.0v to 0.8v 0.6 0.8 1.0 ns t jc jitter (cycle to cycle) 225 325 ps t d output duty cycle 45 50 55 % note: 1. t lh and t hl are measured with a capacitive load of 15pf
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 5 of 9 notice: the information in this document is subject to change without notice. package information 8-lead (150-mil) soic package d e h d a1 a2 a l c b e dimensions inches millimeters symbol min max min max a1 0.004 0.010 0.10 0.25 a 0.053 0.069 1.35 1.75 a2 0.049 0.059 1.25 1.50 b 0.012 0.020 0.31 0.51 c 0.007 0.010 0.18 0.25 d 0.193 bsc 4.90 bsc e 0.154 bsc 3.91 bsc e 0.050 bsc 1.27 bsc h 0.236 bsc 6.00 bsc l 0.016 0.050 0.41 1.27 0 8 0 8
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 6 of 9 notice: the information in this document is subject to change without notice. e h a a1 a2 d b c l e 8-lead thin shrunk small outline package (4.40-mm body) dimensions inches millimeters symbol 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
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 7 of 9 notice: the information in this document is subject to change without notice. ordering information part number marking package configuration temperature range P1727ag-08st P1727ag 8 pin soic, tube, green commercial P1727ag-08sr P1727ag 8 pin soic, tape & reel, green commercial P1727ag-08tt P1727ag 8 pin tssop, tube, green commercial P1727ag-08tr P1727ag 8 pin tssop, tape & reel, green commercial P1727bg-08st P1727bg 8 pin soic, tube, green commercial P1727bg-08sr P1727bg 8 pin soic, tape & reel, green commercial P1727bg-08tt P1727bg 8 pin tssop, tube, green commercial P1727bg-08tr P1727bg 8 pin tssop, tape & reel, green commercial P1727cg-08st P1727cg 8 pin soic, tube, green commercial P1727cg-08sr P1727cg 8 pin soic, tape & reel, green commercial P1727cg-08tt P1727cg 8 pin tssop, tube, green commercial P1727cg-08tr P1727cg 8 pin tssop, tape & reel, green commercial P1727dg-08st P1727dg 8 pin soic, tube, green commercial P1727dg-08sr P1727dg 8 pin soic, tape & reel, green commercial P1727dg-08tt P1727dg 8 pin tssop, tube, green commercial P1727dg-08tr P1727dg 8 pin tssop, tape & reel, green commercial P1727eg-08st P1727eg 8 pin soic, tube, green commercial P1727eg-08sr P1727eg 8 pin soic, tape & reel, green commercial P1727eg-08tt P1727eg 8 pin tssop, tube, green commercial P1727eg-08tr P1727eg 8 pin tssop, tape & reel, green commercial P1727fg-08st P1727fg 8 pin soic, tube, green commercial P1727fg-08sr P1727fg 8 pin soic, tape & reel, green commercial P1727fg-08tt P1727fg 8 pin tssop, tube, green commercial P1727fg-08tr P1727fg 8 pin tssop, tape & reel, green commercial P1727gg-08st P1727gg 8 pin soic, tube, green commercial P1727gg-08sr P1727gg 8 pin soic, tape & reel, green commercial P1727gg-08tt P1727gg 8 pin tssop, tube, green commercial P1727gg-08tr P1727gg 8 pin tssop, tape & reel, green commercial P1727hg-08st P1727hg 8 pin soic, tube, green commercial P1727hg-08sr P1727hg 8 pin soic, tape & reel, green commercial P1727hg-08tt P1727hg 8 pin tssop, tube, green commercial P1727hg-08tr P1727hg 8 pin tssop, tape & reel, green commercial
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 8 of 9 notice: the information in this document is subject to change without notice. device ordering information P1727x g 08-xx licensed under us patent #5,488 ,627, #6,646,463 a nd #5,631,920. sr - soic, t/r tt ? tssop, tube tr - tssop, t/r st ? soic , tube device numbe r flow: p = commercial temperature range (0c to 70c) i = industrial temperature range (-40c to 85c) pin count deviation ( % ) and s p read o p tion identifie r f = lead free and rohs compliant part g = green package, lead free, and rohs
april 2007 P1727 rev 0.2 low power notebook lcd panel emi reduction ic 9 of 9 notice: the information in this document is subject to change without notice. note: this product utilizes us patent # 6,646,463 impedance emulator patent issued to pulsecore semiconductor, dated 11-11-2003 ? copyright 2006 pulsecore semiconductor corporation. all rights reserved. our logo and name are trademarks or registered trademarks of pulsecore semiconductor. all ot her brand and product names may be the trademarks of their respective companies. pulsecore reserves the right to make changes to this document and its products at any time without notice. pulsecore assumes no responsibility for any errors t hat may appear in this document. the data contained herein represents pulsecore?s best data and/or estimates at the time of issuance. pulsecore reserves the right to change or correct this data at any time, without notice. if the product descri bed herein is under development, significant changes to these specifications are possible. the information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not in tended to operate as, or provide, any guarantee or warrantee to any user or customer. pulsecore does not assume any responsibility or liability arising out of the app lication or use of any product described herein, and disclaims any express or implied warrant ies related to the sale and/or use of pulsecore products including liability or warranties related to fitness for a particular purpose, mercha ntability, or infringement of any intellec tual property rights, except as express agreed to in pulsecore? s terms and conditions of sale (which are available from pulsecore). all sales of pulsecore products are made exclusiv ely according to pulsecore?s terms and conditions of sale. the purchase of products from pulsecore does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellect ual property rights of pulsecore or third partie s. pulsecore does not authorize its products for use as critical components in life-supp orting systems where a malfunction or failu re may reasonably be expected to result in significant injury to the user, and the inclusion of pulsec ore products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to inde mnify pulsecore against all claims arising from such use. pulsecore semiconductor corporation 1715 s. bascom ave suite 200 campbell, ca 95008 tel: 408-879-9077 fax: 408-879-9018 www.pulsecoresemi.com copyright ? pulsecore semiconductor all rights reserved part number: P1727 document version: 0.2
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