? 2006 california micro devices corp. all rights reserved. 01/26/06 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 1 CM1293 2, 4, and 8-channel low capa citance esd protection arrays features ? 2, 4, and 8 channels of esd protection ? provides esd protection to iec61000-4-2 - 8kv contact discharge - 15kv air discharge ? low loading capacitance of 2.0pf max. ? low clamping voltage ? channel i/o to i/o capacitance 1.5pf typical ? zener diode protects suppl y rail and eliminates the need for external by-pass capacitors ? each i/o pin can withstand over 1000 esd strikes ? available in sot, and msop packages ? lead-free version available applications ? dvi ports, hdmi ports in notebooks, set top boxes, digital tvs, lcd displays ? serial ata ports in desktop pcs and hard disk drives ? pci express ports ? general purpose high-speed data line esd protection product description the CM1293 family of diode arrays has been designed to provide esd protection for electronic components or sub-systems requiring mini mal capacitive loading. these devices are ideal for protecting systems with high data and clock rates or for circuits requiring low capacitive loading. each esd channel consists of a pair of diodes in series which steer the positive or neg- ative esd current pulse to either the positive (v p ) or negative (v n ) supply rail. a zener diode is embedded between v p and v n , offering two advantages. first, it protects the v cc rail against esd strikes, and second, it eliminates the need for a bypass capacitor that would otherwise be needed for absorbing positive esd strikes to ground. the cm 1293 will protect against esd pulses up to ( 15kv air, 8kv contact discharge) per the iec 61000-4-2 level 4 standard. this device is particularly well-suited for protecting sys- tems using high-speed ports such as usb2.0, ieee1394 (firewire ? , ilink ? ), serial ata, dvi, hdmi and corresponding ports in removable storage, digital camcorders, dvd-rw drives and other applications where extremely low loading capacitance with esd protection are required in a small package footprint. the CM1293 family of devices is available with optional lead-f ree finishing. electrical schematics ch1 v p v n CM1293-04st/so ch4 ch2 ch3 ch3 ch6 ch4 ch5 ch1 CM1293-08ms/mr ch8 ch2 ch7 v p v n ch1 v p v n CM1293-02st/so ch2 CM1293--02sr CM1293-04ms/mr
? 2006 california micro devices corp. all rights reserved. 2 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 01/26/06 CM1293 package / pinout diagrams note: these drawings are not to scale. 6-lead sot23-6 1 2 6 5 3 4 d034 / top view ch1 v n ch2 ch4 v p ch3 d035 5-lead sot23-5 1 2 5 3 4 d032 / top view nc v n ch1 v p ch2 d033 10-lead msop-10 1 2 3 4 10 9 8 7 ch1 nc v p ch2 nc ch4 v n nc top view 56 nc ch3 d040 / d041 4-lead sot143-4 1 4 2 3 d036 top view v n ch1 v p ch2 10-lead msop-10 1 2 3 4 10 9 8 7 ch1 ch2 ch3 ch4 ch8 ch7 v p ch6 top view 56 v n ch5 d038 / d039 pin descriptions 2-channel, 4-lead sot143-4 package pin name type pin 1 v n gnd 1 2 ch1 i/o 2 3 ch2 i/o 3 4 v p pwr 4 2-channel, 5-lead sot23-5 package pin name type description 1 nc no connect 2v n gnd negative voltage supply rail 3 ch1 i/o esd channel 4 ch2 i/o esd channel 5v p pwr positive voltage supply rail 4-channel, 6-lead sot23-6 package pin name type description 1 ch1 i/o esd channel 2v n gnd negative voltage supply rail 3 ch2 i/o esd channel 4 ch3 i/o esd channel 5v p pwr positive voltage supply rail 6 ch4 i/o esd channel 5v p pwr positive voltage supply rail 6 ch4 i/o esd channel 4-channel, 10-lead msop-10 package pin name type description 1 ch1 i/o esd channel 2 nc no connect 3v p pwr positive voltage supply rail 4 ch2 i/o esd channel 5 nc no connect 6 ch3 i/o esd channel 7 nc no connect 8v n gnd negative voltage supply rail 9 ch4 i/o esd channel 10 nc no connect 8-channel, 10-lead msop-10 package pin name type description 1 ch1 i/o esd channel 2 ch2 i/o esd channel 3 ch3 i/o esd channel 4 ch4 i/o esd channel 5v n pwr positive voltage supply rail 6 ch5 i/o esd channel 7 ch6 i/o esd channel 8v n gnd negative voltage supply rail 9 ch7 i/o esd channel 10 ch8 i/o esd channel
? 2006 california micro devices corp. all rights reserved. 01/26/06 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 3 CM1293 ordering information note 1: parts are shipped in tape & reel form unless otherwise specified. specifications part numbering information standard finish lead-free finish # of channels leads package ordering part number 1 part marking ordering part number 1 part marking 2 4 sot143-4 CM1293-02sr d036 2 5 sot23-5 CM1293-02st d032 CM1293-02so d033 4 6 sot23-6 CM1293-04st d034 CM1293-04so d035 4 10 msop-10 CM1293-04ms d040 CM1293-04mr d041 8 10 msop-10 CM1293-08ms d038 CM1293-08mr d039 absolute maximum ratings parameter rating units operating supply voltage (v p - v n )6.0v operating temperature range -40 to +85 c storage temperature range -65 to +150 c dc voltage at any channel input (v n - 0.5) to (v p + 0.5) v standard operat ing conditions parameter rating units operating temperature range -40 to +85 c package power rating sot143-4 package (CM1293-02sr) sot23-5 package (CM1293-02st/so) sot23-6 package (CM1293-04st/so) msop-10 package (CM1293-04ms/mr) msop-10 package (CM1293-08ms/mr) 225 225 225 400 400 mw mw mw mw mw
? 2006 california micro devices corp. all rights reserved. 4 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 01/26/06 CM1293 specifications (cont?d) note 1: all parameters specified at t a = -40c to +85c unless otherwise noted. note 2: these parameters guaranteed by design and characterization. note 3: human body model per mil-std-883, method 3015, c discharge = 100pf, r discharge = 1.5k , v p = 3.3v, v n grounded. note 4: standard iec 61000-4-2 with c discharge = 150pf, r discharge = 330 , v p = 3.3v, v n grounded. note 5: these measurements performed with no external capacitor on v p . note 6: measured under pulsed conditions, pulse width = 0.7ms, maximum current = 1.5a. electrical operat ing characteristics 1 symbol parameter conditions min typ max units v p operating supply voltage (v p -v n )3.35.5v i p operating supply current (v p -v n )=3.3v 8.0 a v f diode forward voltage top diode bottom diode i f = 8ma; t a =25c 0.60 0.60 0.80 0.80 0.95 0.95 v v i leak channel leakage current t a =25c; v p =5v, v n =0v 0.1 1.0 a c in channel input capacitance at 1 mhz, v p =3.3v, v n =0v, v in =1.65v; note 2 2.0 pf c io channel i/o to i/o capacitance 1.5 pf v esd esd protection peak discharge voltage at any channel input, in system a) contact discharge per iec 61000-4-2 standard b) human body model, mil-std-883, method 3015 notes 2, 4 & 5; t a =25c notes 2, 3 & 5; t a =25c 8 15 kv kv v cl channel clamp voltage positive transients negative transients at 8kv esd hbm; t a =25c; notes 2 & 3 +9.0 -9.0 v v r dyn dynamic resistance positive transients negative transients t a =25c; notes 5 & 6 1.2 0.6
? 2006 california micro devices corp. all rights reserved. 01/26/06 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 5 CM1293 performance information (cont?d) typical filter performance (nominal conditions unless specified otherwise, 50 ohm environment) figure 1. insertion loss (s21) vs. frequency (0v dc bias, v p =3.3v) figure 2. insertion loss (s21) vs. frequency (2.5v dc bias, v p =3.3v)
? 2006 california micro devices corp. all rights reserved. 6 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 01/26/06 CM1293 application information design considerations in order to realize the maximum protection against esd pulses, care must be taken in the pcb layout to minimize parasitic series inductances on the supply/ ground rails as well as the signal trace segment between the signal input (typically a connector) and the esd protection device. refer to figure 3 , which illus- trates an example of a positive esd pulse striking an input channel. the parasitic series inductance back to the power supply is represented by l 1 and l 2 . the volt- age v cl on the line being protected is: v cl = fwd voltage drop of d 1 + v supply + l 1 x d(i esd ) / dt + l 2 x d(i esd ) / dt where i esd is the esd current pulse, and v supply is the positive supply voltage. an esd current pulse can ri se from zero to its peak value in a very short time. as an example, a level 4 contact discharge per the iec61000-4-2 standard results in a current pulse th at rises from zero to 30 amps in 1ns. here d(i esd )/dt can be approximated by i esd / t, or 30/(1x10 -9 ). so just 10nh of series induc- tance (l 1 and l 2 combined) will lead to a 300v incre- ment in v cl ! similarly for negative esd pulses, parasitic series inductance from the v n pin to the ground rail will lead to drastically increased negative voltage on the line being protected. the CM1293 has an integrated zener diode between v p and v n . this greatly reduces the effect of supply rail inductance l 2 on v cl by clamping v p at the break- down voltage of the zener diode. however, for the low- est possible v cl , especially when v p is biased at a voltage significantly below the zener breakdown volt- age, it is recommended that a 0.22 f ceramic chip capacitor be connected between v p and the ground plane. as a general rule, the esd protection array should be located as close as possible to the point of entry of expected electrostatic discharges. the power supply bypass capacitor mentioned above should be as close to the v p pin of the protection array as possible, with minimum pcb trace lengths to the power supply, ground planes and between the signal input and the esd device to minimize st ray series inductance. additional information see also california micro devices application note ap209, ?design considerations for esd protection?, in the applications sectio n at www.calmicro.com. figure 3. application of positive es d pulse between input channel and ground n l 2 l 1 v p v path of esd current pulse i one channel of cm1213 channel input ground rail chassis ground positive supply rail system or circuitry being protected line being protected esd 0.22 f d 1 2 d 0a 25a v cl v cc
? 2006 california micro devices corp. all rights reserved. 01/26/06 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 7 CM1293 mechanical details sot143 mechanical specifications dimensions for CM1293-02sr devices supplied in 4- pin sot143 packages are presented below. for complete information on the sot143, see the cali- fornia micro devices sot 143 package information document. package dimensions for sot143. package dimensions package sot143 pins 4 dimensions millimeters inches min max min max a 0.80 1.22 0.031 0.048 a1 0.05 0.15 0.002 0.006 b 0.30 0.50 0.012 0.019 b2 0.76 0.89 0.030 0.035 c 0.08 0.20 0.003 0.008 d 2.80 3.04 0.110 0.119 e 2.10 2.64 0.082 0.103 e1 1.20 1.40 0.047 0.055 e 1.92 bsc 0.075 bsc e1 0.20 bsc 0.008 bsc l 0.4 0.6 0.016 0.024 l1 0.54 ref 0.021 ref # per tape and reel 3000 pieces controlling dimension: millimeters mechanical package diagrams top view 43 e e1 e b2 a side view l end view d a1 c 12 b e1 l1
? 2006 california micro devices corp. all rights reserved. 8 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 01/26/06 CM1293 mechanical details (cont?d) sot23-5 mechanical specifications dimensions for CM1293-02st/so devices packaged in 5-pin sot23 packages are presented below. for complete information on the sot23-5 package, see the california micro devices sot23 package information document. package dimensions package sot23-5 (jedec name is mo-178) pins 5 dimensions millimeters inches min max min max a -- 1.45 -- 0.0571 a1 0.00 0.15 0.0000 0.0059 b 0.30 0.50 0.0118 0.0197 c 0.08 0.22 0.0031 0.0087 d 2.75 3.05 0.1083 0.1201 e 2.60 3.00 0.1024 0.1181 e1 1.45 1.75 0.0571 0.0689 e 0.95 bsc 0.0374 bsc e1 1.90 bsc 0.0748 bsc l 0.30 0.60 0.0118 0.0236 l1 0.60 ref 0.0236 ref # per tape and reel 3000 pieces controlling dimension: millimeters mechanical package diagrams top view e1 e e1 e b a side view d a1 l1 end view c l 54 12 3
? 2006 california micro devices corp. all rights reserved. 01/26/06 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 9 CM1293 mechanical details (cont?d) sot23-6 mechanical specifications CM1293-04st/so devices are packaged in 6-pin sot23 packages. dimensions are presented below. for complete information on the sot23-6 package, see the california micro devices sot23 package information document. package dimensions for sot23-6. package dimensions package sot23-6 (jedec name is mo-178) pins 6 dimensions millimeters inches min max min max a -- 1.45 -- 0.0571 a1 0.00 0.15 0.0000 0.0059 b 0.30 0.50 0.0118 0.0197 c 0.08 0.22 0.0031 0.0087 d 2.75 3.05 0.1083 0.1201 e 2.60 3.00 0.1024 0.1181 e1 1.45 1.75 0.0571 0.0689 e 0.95 bsc 0.0374 bsc e1 1.90 bsc 0.0748 bsc l 0.30 0.60 0.0118 0.0236 l1 0.60 ref 0.0236 ref # per tape and reel 3000 pieces controlling dimension: millimeters mechanical package diagrams top view 12 3 65 4 e1 e e1 e b a side view d a1 l1 end view c l pin 1 marking
? 2006 california micro devices corp. all rights reserved. 10 490 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.cmd.com 01/26/06 CM1293 mechanical details (cont?d) msop-10 mechanical specifications CM1293-04ms/mr and CM1293-08ms/mr devices are packaged in 10-pin msop packages. dimensions are presented below. for complete information on the msop-10 package, see the california micro devices msop package infor- mation document. package dimensions for msop-10 package dimensions package msop pins 10 dimensions millimeters inches min max min max a 0.75 0.95 0.028 0.038 a1 0.05 0.15 0.002 0.006 b 0.18 0.40 0.006 0.016 c 0.18 0.007 d 2.90 3.10 0.114 0.122 e 2.90 3.10 0.114 0.122 e 0.50 bsc 0.0196 bsc h 4.76 5.00 0.187 0.197 l 0.40 0.70 0.0137 0.029 # per tape and reel 4000 controlling dimension: inches mechanical package diagrams e d h 1234 10 9 8 7 l end view c e b a a1 seating plane side view top view 6 5 pin 1 marking
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