november 2006 p2040c rev 1.6 notice: the information in this document is subject to change without notice. pulsecore semiconductor corporation 1715 s. bascom ave suite 200, campbell, ca 95008 ? tel: 408-879-9077 ? fax: 408-879-9018 www. p ulsecoresemi.com lcd panel emi reduction ic features ? fcc approved method of emi attenuation. ? provides up to 15db of emi suppression ? generates a low emi spread spectrum clock of the input frequency ? 50mhz to 173mhz input frequency range ? optimized for 54mhz, 65mhz, 81mhz, 140mhz, and 162mhz pixel clock frequencies ? internal loop filter minimizes external components and board space ? 8 selectable spread ranges, up to 2.2% ? sson# control pin for spread spectrum enable and disable options ? 2 selectable m odulation rates ? low cycle-to-cycle jitter ? 3.3v operating voltage ? ultra low power cmos design ? supports most mobile graphic accelerator and lcd timing controller specifications ? available in 8 pin soic and tssop packages product description the p2040c is a selectable spread spectrum frequency modulator designed specifically for digital flat panel applications. the p2040c r educes electromagnetic interference (emi) at the clock source which provides system wide reduction of emi of all clock dependent signals. the p2040c allows significant system cost savings by reducing the number of circuit board layers and shielding that are traditionally required to pass emi regulations. the p2040c uses the most efficient and optimized modulation profile approved by the fcc and is implemented in a proprietary all-digital method. the p2040c 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 result in a 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?. applications the p2040c is targeted towards digital flat panel applications for no tebook pcs, palm-size pcs, office automation equipments and lcd monitors. block diagram clkin modout vss frequency divider feedback divider modulation phase detector loop filter vco output divider pll vdd sson# sr0 sr1 mra
november 2006 p2040c rev 1.6 lcd panel emi reduction ic 2 of 9 notice: the information in this document is subject to change without notice. mra sson# modout sr0 1 2 3 4 5 6 7 8 p2040c clkin vss 1 2 3 4 5 6 7 8 p2040c sr1 vdd pin configuration pin description pin# pin name type description 1 clkin i external reference frequency input. con nect to externally generated reference signal. 2 mra i digital logic input used to select modulati on rate. this pin has an internal pull-up resistor. 3 sr1 i digital logic input used to select spreading range. this pin has an internal pull-up resistor. 4 vss p ground to entire chip. connect to system ground. 5 sson# i digital logic input used to enable spread spec trum function (active low). spread spectrum function enabled when low, disabled when high. 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. this pin has an internal pull-up resistor. 8 vdd p power supply for the entire chip. modulation selection (commercial) ? table 1 spreading range mra sr1 sr0 54mhz 65mhz 81mhz 140mhz 162mhz modulation rate 0 0 0 1.4% 1.2% 1.0% 0.6% 0.4% (fin/80) * 62.49khz 0 0 1 2.0% 1.9% 1.6% 1.0% 0.8% (fin/80) * 62.49khz 0 1 0 1.1% 0.9% 0.5% 0.3% 0.3% (fin/80) * 62.49khz 0 1 1 1.8% 1.5% 1.0% 0.54% 0.4% (fin/80) * 62.49khz 1 0 0 1.3% 1.3% 1.3% 1.25% 1.1% (fin/80) * 20.83khz 1 0 1 2.2% 2.1% 2.1% 2.0% 1.8% (fin/80) * 20.83khz 1 1 0 1.4% 1.3% 1.4% 1.2% 0.9% (fin/80) * 20.83khz 1 1 1 2.1% 2.1% 2.1% 1.9% 1.4% (fin/80) * 20.83khz
november 2006 p2040c rev 1.6 lcd panel emi reduction ic 3 of 9 notice: the information in this document is subject to change without notice. 1 2 3 4 clkin mra sr1 vss sr0 5 6 7 8 sson# modout vdd p2040c spread spectrum selection table 1 illustrates the possible spread spectrum options. the optimal setting should minimize system emi to the fullest without affecting system performance. the spreading is described as a percentage devia tion of the center frequency (note: the center frequency is t he frequency of the external refe rence input on clkin, pin 1). example : p2040c is designed for high resolution flat panel applications and is able to support panel frequencies from 50mhz to 173mhz. for a 65mhz pixel clock frequency, a spr eading selection of mra=0, sr1=1 and sr0 =1 provides a percentage deviation of 1.50% (see table 1). this resu lt in frequency on modout bei ng swept from 64.03mhz to 65.98mhz at a modulation rate of 50.77khz (see table 1). this particular example (see figure below) given here is a common emi reduction method for notebook lcd panel and has already been implemented by most of the leading oem and mobile graphic accelerator manufacturers. application schematic for mobile lcd graphics controllers modulated 65mhz signal with 1.5 % deviation and modulation rate of 50.77khz. this signal is connected back to the spread spectrum input pin (ssin) of the graphics accelerator. 65mhz from graphics accelerator +3.3v 0.1f digital control for the ss enable or disable
november 2006 p2040c rev 1.6 lcd panel emi reduction ic 4 of 9 notice: the information in this document is subject to change without notice. absolute maximum ratings symbol parameter rating unit vdd, v in voltage on any pin with respect to ground -0.5 to +4.6 v t stg storage temperature -65 to +125 c t a operating temperature -40 to +125 c t s max. soldering temperature (10 sec) 260 c for soic package 156.5 ? ja thermal resistance from junction to ambient ( no air flow) for tssop package 124 c/w 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. dc electrical characteristics (test condition: all parameters are measured at ro om temperature (+25c) unless otherwise stated) 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 (pull-up resistor on inputs sr0, sr1 and mra) - - -40 a i ih input high current (pull-down resistor on input sson#) - - 40 a v ol output low voltage (vdd = 3.3v, i ol = 20ma) - - 0.4 v v oh output high voltage (vdd = 3.3v, i ol = 20ma) 2.5 - - v i dd static supply current standby mode - 0.7 - ma i cc dynamic supply current (3.3v and 10pf loading) 9 16 22 ma vdd operating volt age 3.0 3.3 3.6 v t on power-up time (first locked cycle after power up) - 0.18 - ms z out clock output impedance - 50 - ? ac electrical characteristics symbol parameter min typ max unit f in input frequency 50 173 mhz t lh * output rise time (measured at 0.8v to 2.0v) 0.3 0.7 1.0 ns t hl * output fall time (measured at 2.0v to 0.8v) 0.3 0.7 1.0 ns t jc jitter (cycle to cycle) - - 360 ps t d output duty cycle 45 50 55 % *t lh and t hl are measured into a capacitive load of 15pf
november 2006 p2040c rev 1.6 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
november 2006 p2040c rev 1.6 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 tssop (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
november 2006 p2040c rev 1.6 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 type temperature p2040cf-08st p2040cf 8-pin soic, tube, pb free commercial p2040cf-08sr p2040cf 8-pin soic, tape & reel, pb free commercial p2040cf-08tt p2040cf 8-pin tssop, tube, pb free commercial p2040cf-08tr p2040cf 8-pin tssop, tape & reel, pb free commercial i2040cf-08st i2040cf 8-pin s oic, tube, pb free industrial i2040cf-08sr i2040cf 8-pin soic, tape & reel, pb free industrial i2040cf-08tt i2040cf 8-pin tssop, tube, pb free industrial i2040cf-08tr i2040cf 8-pin tssop, tape & reel, pb free industrial x2040cf-08st x2040cf 8-pin soic, tube, pb free automotive x2040cf-08sr x2040cf 8-pin soic, tape & reel, pb free automotive x2040cf-08tt x2040cf 8-pin tssop, tube, pb free automotive x2040cf-08tr x2040cf 8-pin tssop, tape & reel, pb free automotive p2040cg-08st p2040cg 8-pin soic, tube, green commercial p2040cg-08sr p2040cg 8-pin soic, tape & reel, green commercial p2040cg-08tt p2040cg 8-pin tssop, tube, green commercial p2040cg-08tr p2040cg 8-pin tssop, tape & reel, green commercial i2040cg-08st i2040cg 8-pin soic, tube, green industrial i2040cg-08sr i2040cg 8-pin soic, tape & reel, green industrial I2040CG-08TT i2040cg 8- pin tssop, tube, green industrial i2040cg-08tr i2040cg 8-pin tssop, tape & reel, green industrial x2040cg-08st x2040cg 8-pin soic, tube, green automotive x2040cg-08sr x2040cg 8-pin soic, tape & reel, green automotive x2040cg-08tt x2040cg 8-pin tssop, tube, green automotive x2040cg-08tr x2040cg 8-pin tssop, tape & reel, green automotive
november 2006 p2040c rev 1.6 lcd panel emi reduction ic 8 of 9 notice: the information in this document is subject to change without notice. device ordering information p2040cf-08st licensed under u.s patent nos 5,488,627 and 5,631,921 device number p = commercial temperature range (0c to 70c) i = industrial temperature range (-40c to 85c) x = automotive temperature range (-40c to 125c) pin count f = pb free and rohs compliant part g = green package, lead free, and rohs package: st ? soic, tube sr - soic, t/r tt ? tssop, tube tr - tssop, t/r
november 2006 p2040c rev 1.6 lcd panel emi reduction ic 9 of 9 notice: the information in this document is subject to change without notice. ? copyright 2006 pulsecore semiconductor corporation. a ll 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 c hanges 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 described herein is under development, significant changes to these specifications are possible. the info rmation in this product data sheet is int ended to be general descriptive information for potential customers and users, and is not intended 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 parti cular purpose, merchantability, 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 part ies. pulsecore does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of pulsecore 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 preliminary information part number: p2040c document version: v1.6 note: this product utilizes us patent # 6,646,463 impedance emulator patent issued to pulsecore semiconductor, dated 11-11-2003
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