lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 1 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? description lx7207 has 10 lines of integrated low pass filters with esd protection that filter out emi as well as protecting the equipment from esd surge voltages. the device is a 5x5 array flip chip and measures 2.5 x 2.5 x 0.65 mm. the absence of leadframe and bondwires minimizes inductance and optimizes the high frequency filter performance. lx7207 exceeds the requirements of iec61000-4-2 (15kv air discharge and 8kv contact discharge). important: for the most current data, consult microsemi ?s website: http://www.microsemi.com benefits ? filter response characterized up to 6 ghz ? 3.5db insertion loss in the pass band ? >30db attenuation in the 800-1000 mhz range ? >20db attenuation in the wlan fr equencies of 2.4ghz and 5.0-6.0 ghz key features ? flip chip construction ? emi/rfi low-pass filter with integrated esd protection ? 50 ? line termination resistors ensure signal integrity ? low tvs operating voltage (5v) ? low leakage current ? 0.5mm pitch chip scale package designed for direct assembly on fr4 pcb using conventional assembly techniques applications ? lcd displays ? wireless handsets ? pda?s ? portable information terminals ? notebook computers ? point of sale terminals ? fingerprint sensors product highlight low pass filter in out circuit diagram for each of 10 emi filters f9 f9 f10 f10 f5 f5 f6 f6 f7 f7 f8 f8 f3 f3 f4 f4 f1 f1 f2 f2 a b c d e 1 2345 gnd gnd gnd gnd gnd pinout of csp emi filter with esd protection f1 is filter #1 etc. bottom view (bumps up) package order info t j ( c) sp 0.5mm pitch chip scale package (csp) marking quantity per reel reel diameter -40 to 125 LX7207ISP lx7207 date code 3000 7 in. (177.8mm) note: available in tape & reel append the letters ?tr? to the part number (i.e. LX7207ISPtr) l l x x 7 7 2 2 0 0 7 7
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 2 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? absolute maximum ratings steady state power ....................................................................................100mw esd air discharge per iec61000-4- 2 .......................................................16kv esd contact discharge pe r iec61000-4-2 ................................................11kv reflow temperature (10 seconds) .............................................................. 240c operating temperature .................................................................. -40 to +125c storage temperature range........................................................... -55 to +150c note: exceeding these ratings could cause damage to the device. all voltages are with respect to ground. currents are positive into, negative out of specified terminal . csp- top view functional pin description name description a1, b1, c1, d1, e1 filter inputs 1, 3, 5, 7, 9 a2, b2, c2, d2, e2 filter inputs 2, 4, 6, 8, 10 a3, b3, c3, d3, e3 ground a4, b4, c4, d4, e4 filter outputs 2, 4, 6, 8, 10 a5, b5, c5, d5, e5 filter outputs 1, 3, 5, 7, 9 electrical characteristics unless otherwise specified, the following specifications apply over the operating ambient temperature -40 c t a +125 c except where otherwise noted. lx7207 parameter symbol test conditions min typ max units stand-off voltage v rwm 5.25 v breakdown voltage v br ir = 1ma 6 v leakage current i r vrwm = 5.0v, t = 25c 1 a series resistance r s each line 45 50 55 ? temperature co-efficient of r s t coeff each line 200 ppm total capacitance c each line, 0v, 1mhz 80 100 120 pf attenuation in the pass band 50 ? environment, dc bias = 0v, t = 25c 3.5 db cut-off frequency f c 50 ? environment, dc bias = 0v, t = 25c 52 mhz application information majority of color lcd displays are made with thin film transistors (tft) and as such are very vulnerable to esd damage. if an esd stress hits the tft display, it will produce a black pixel/line. esd events can also create electromagnetic interference (emi ). emi radiated from an esd event can couple into a display through cables or i/o ports and become a voltage or current spike. this spike can then corrupt the operation of the sensitive tft?s and affect the display operation and quality. figure 6 shows a typical application of lx7207 is suppressing esd and emi in color lcd displays. exact number of lines to be protected will depend on the controller and lcd specifications such as number of bits per pixel (bpp). p p a a c c k k a a g g e e d d a a t t a a
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 3 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? input pulse clamping figure 1 ? 8kv esd input pulse as per iec61000-4-2. vertical scale is equivalnet to 5a/div figure 2 ? clamping characteristics when device subjected to an 8 kv esd pulse. capacitance vs. bias 100 101 102 103 104 105 106 012345 dc bias voltage (v) t ota l c apac i tance ( p f) figure 3 ? total capacitance vs. reverse bias c c h h a a r r t t s s
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 4 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? frequency resposne figure 4 ? typical frequency response curve. low insertion loss in the pass band and >-30db attenuation at 800-1000 mhz. better than -20db attenuation at the wlan frequencies of 2.4 ghz and 5.0-6.0 ghz. analog crosstalk figure 5 ? typical analog crosstalk c c h h a a r r t t s s
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 5 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? application circuits back light tft lcd lcd controller/ driver ic lx7207 lx7207 figure 6 ? system block diagram of lcd controller and display recommended pcb parameters parameter value cu pad size 0.275 +0.0/-0.025 mm pad pitch 0.5mm pad definition non-solder mask defined solder mask opening 0.375 0.025 mm solder stencil 0.25 x 0.25 mm square, 0.125 mm thick, laser cut, electro-polished pad protective finish osp (o rganic surface preservative) a a p p p p l l i i c c a a t t i i o o n n s s
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 6 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? recommended pcb para meters- continued solder mask opening 0.325 mm dia. non-solder mask defined cu pad (osp finish) 0.275 mm dia. figure 7 ? recommended non-solder mask defined pad temperature (c) time (s) 150c 183c 240c max ~ 1min ~2 min ~ 1min cooling zone preheat zone flux activation zone solder reflow zone figure 8 ? solder reflow profile. max temp is 240oc and max time above liquidous (183oc) is 60 seconds. a a p p p p l l i i c c a a t t i i o o n n s s
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 7 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? package dimensions sp 0.5mm chip scale package a b c d e 1 23 45 0.25 mm dia. 63/37 sn/pb eutectic solder bumps 0.55mm min 0.65mm max 0.37mm min 0.47mm max 2.5 0.5 0.5 2.5 a c d e 12 45 3 orientation mark b lx7207 date code part marking ` lx7207 date code lx7207 date code lx7207 date code part orientation in tape 8.00 mm + 0.30 -0.10 4.00 mm 0.10 3.50 mm 0.05 2.00 mm 0.05 4.00 mm 0.10 1.14 mm 0.05 0.51 mm 0.254 mm 0.02 2.67 mm 0.05 32 max tape dimensions m m e e c c h h a a n n i i c c a a l l s s
lx7207 p roduction d ata s heet copyright ? 2003 microsemi page 8 rev 1.0d, 6/16/2004 11861 western avenue, garden grove, ca. 92841 (714) 898-8121, fax: (714) 893-2570 www. microsemi . com integrated emi filter & esd protection for color lcd displays tm ? notes production data ? information contained in this document is proprietary to microsemi and is current as of publication date. this document may not be modified in any way without the express written consent of microsemi. product processing does not necessarily include testing of all parameters. microsemi reserves the right to change the configuration and performance of the product and to discontinue product at any time. n n o o t t e e s s
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