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? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 1 cm1210 1, 2, 4 and 8-channel very low capacitance esd protectors features ? 1,2,4 and 8 channels of esd protection ? very low loading capacitance (1.0pf typical) ? 6 kv esd protection per channel (iec 61000-4-2 standard) ? available in sot23, sot143, sc70 and msop packages ? lead-free versions available applications ? usb2.0 ports at 480mbps ? ieee1394 firewire ports at 400mbps ? gigabit ethernet ports ? flat panel display interfaces ? wireless antennas ? general purpose high-speed data line esd protection product description the cm1210 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 which will stee r the esd current pulse to either the positive (v p ) or negative (v n ) supply rail. the cm1210 will protect against esd pulses up to 6kv per the iec 61000-4-2 standard. this device is particularly well-suited for systems using high-speed port implementations such as usb2.0, ieee1394 (firewire ? , i.link ? ), gigabit ethernet and corresponding ports in removable storage, digital cam- corders, dvd-rw drives and other applications where extremely low loading capacitance with esd protection are required in a small package footprint. the cm1210 family of devices is optionally available with lead-free finishing. electrical schematics ch1 v p v n cm1210-01st/so ch1 v p v n cm1210-02st/so ch2 ch1 v p v n cm1210-04st/so ch4 ch2 ch3 ch3 v n ch6 ch4 ch5 ch1 v p cm1210-08ms/mr ch8 ch2 ch7 cm1210-01sc/s7 cm1210-02sc/s7 obsolete product
? 2005 california micro devices corp. all rights reserved. 2 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 04/07/05 cm1210 package / pinout diagrams note: these drawings are not to scale. 3-pin sot23-3 ch1 v p v n 1 2 3 top view d10/d101 4-pin sot143-4 1 4 2 3 d10/d102 top view v n ch1 v p ch2 5-pin sc70-5 1 2 5 3 4 d10/d112 top view 6-pin sot23-6 1 2 6 5 3 4 d10/d104 top view ch1 v n ch2 ch4 v p ch3 v n v n v p ch2 ch1 10-pin 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 d10/d108 3-pin sc70-3 ch1 v p v n 1 2 3 top view d10/d111 sot23-3 & sc70-3 package pin descriptions pin name type description 1 ch1 i/o esd channel 2v p pwr positive voltage supply rail 3v n gnd negative voltage supply rail sc70-5 package pi n descriptions pin name type description 1v n gnd negative voltage supply rail 2v n gnd negative voltage supply rail 3v p pwr positive voltage supply rail 4 ch1 i/o esd channel 5 ch2 i/o esd channel sot23-6 package pin descriptions 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 sot143-4 package pin descriptions pin name type description 1v n gnd negative voltage supply rail 2 ch1 i/o esd channel 3 ch2 i/o esd channel 4v p pwr positive voltage supply rail msop-10 package pin descriptions 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 gnd negative voltage supply rail 6 ch5 i/o esd channel 7 ch6 i/o esd channel 8v p pwr positive voltage supply rail 9 ch7 i/o esd channel 10 ch8 i/o esd channel obsolete product
? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 3 cm1210 ordering information note 1: parts are shipped in tape & reel form unless otherwise specified. specifications note 1: only one diode conducting at a time. part numbering information pins package standard finish lead-free finish ordering part number 1 part marking ordering part number 1 part marking 3 sot23-3 cm1210-01st d10 cm1210-01so d101 3 sc70-3 cm1210-01sc d10 cm1210-01s7 d111 4 sot143-4 cm1210-02st d10 cm1210-02so d102 5 sc70-5 cm1210-02sc d10 CM1210-02S7 d112 6 sot23-6 cm1210-04st d10 cm1210-04so d104 10 msop-10 cm1210-08ms d10 cm1210-08mr d108 absolute maximum ratings parameter rating units supply voltage (v p - v n )8.0v diode forward dc current (note 1) 8 ma 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 package power rating sot23-3 package (cm1210-01st/so) sc70-3 package (cm1210-01sc/s7) sot143 package (cm1210-02st/so) sc70-5 package (cm1210-02sc/s7) sot23-6 package (cm1210-04st/so) msop10 package (cm1210-08ms/mr) 225 200 225 200 225 400 mw mw mw mw mw mw standard operat ing conditions parameter rating units operating temperature range -40 to +85 c operating supply voltage (v p - v n ) 0 to 5.5 v obsolete product
? 2005 california micro devices corp. all rights reserved. 4 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 04/07/05 cm1210 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: from i/o pins to v p or v n only. v p bypassed to v n with a 0.22 f ceramic capacitor (see appl ication information for more details). note 4: human body model per mil-std-883, method 3015, c discharge = 100pf, r discharge = 1.5k , v p = 3.3v, v n grounded. note 5: standard iec 61000-4-2 with c discharge = 150pf, r discharge = 330 , v p = 3.3v, v n grounded. electrical operat ing characteristics (see note 1) symbol parameter conditions min typ max unit s i p supply current (v p -v n )=3.3v 8.0 a v f diode forward voltage top diode bottom diode i f = 8ma 0.60 0.60 0.80 0.80 0.95 0.95 v v i leak channel leakage current 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 applies 1.0 1.3 pf v esd esd protection peak discharge voltage at any channel input , in system a) contact discharge per iec 61000-4-2 standard notes 2,3 and 5; t a =25c 6kv v cl channel clamp voltage cm1210-01st, cm1210-01sc, cm1210-02st, cm1210-02sc positive transients negative transients at 8kv esd hbm; notes 2 & 4 v p + 10.0 v n - 10.0 v v channel clamp voltage cm1210-04st, cm1210-08ms positive transients negative transients at 8kv esd hbm; notes 2 & 4 v p + 13.0 v n - 13.0 v v obsolete product
? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 5 cm1210 performance information input channel capacitance performance curves 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 -50 -25 0 25 50 75 100 temperature (c) input capacitance (pf) 0v dc input bias 1.65v dc input bias typical variation of c in vs. v in (f=1mhz, v p = 3.3v, v n = 0v, 0.1 f chip capacitor between v p and v n, 25c ) 0 0.5 1 1.5 2 00.511.522.53 input voltage (v) input capacitance (pf) typical variation of c in vs. temp (f=1mhz, v in =30mv, v p = 3.3v, v n = 0v, 0.1 f chip capacitor between v p and v n ) obsolete product
? 2005 california micro devices corp. all rights reserved. 6 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 04/07/05 cm1210 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) v p (3.3v) gnd p1 i/on p2 test circuit v p (3.3v) gnd p1 i/on p2 test circuit obsolete product
? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 7 cm1210 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 910nh 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. another consideration is the output impedance of the power supply for fast tran sient currents. most power supplies exhibit a much higher output impedance to fast transient current spikes. in the v cl equation above, the v supply term, in reality, is given by (v dc + i esd x r out ), where v dc and r out are the nominal supply dc output voltage and effective output imped- ance of the power supply respectively. as an example, a r out of 1 ohm would result in a 10v increment in v cl for a peak i esd of 10a. if the inductances and re sistance described above are close to zero, the rail-clamp esd protection diodes will do a good job of protection. however, since this is not possible in practical situations, a bypass capacitor must be used to absorb the very high frequency esd energy. so for any brand of rail-clamp esd protection diodes, a bypass capacitor should be connected between the v p pin of the diodes and the ground plane (v n pin of the diodes) as shown in the application cir- cuit diagram below. a value of 0.22f is adequate. ceramic chip capacitors mounted with short printed cir- cuit board traces are good choices for this application. electrolytic capacitors should be avoided as they have poor high frequency characteristics. for extra protec- tion, connect a zener diode in parallel with the bypass capacitor to mitigate the effects of the parasitic series inductance inherent in t he capacitor. the breakdown voltage of the zener diode should be slightly higher than the maximum supply voltage. 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 notes ap209, ?design considerat ions for esd protection? and apxxx, "esd protection for usb 2.0 systems". 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 cm1210 channel input ground rail positive supply rail system or circuitry being protected line being protected esd d 0.22 f 1 2 d 0a 20a v cl obsolete product
? 2005 california micro devices corp. all rights reserved. 8 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 04/07/05 cm1210 mechanical details the cm1210 is available in sot23-3, sc70-3, sc70- 5, sot23-6, sot143-4 and msop-10 packages.the various package drawings are presented below. sot23-3 mechanical specifications dimensions for cm1210 devices supplied in 3-pin sot23 packages are presented below. for complete information on the sot23-3 package, see the california micro devices sot23 package information document. package dimensions for sot23-3. package dimensions package sot23-3 (jedec na me is to-236) pins 3 dimensions millimeters inches min max min max a 0.89 1.12 0.0350 0.0441 a1 0.01 0.10 0.0004 0.0039 b 0.30 0.50 0.0118 0.0197 c 0.08 0.20 0.0031 0.0079 d 2.80 3.04 0.1102 0.1197 e 2.10 2.64 0.0827 0.1039 e1 1.20 1.40 0.0472 0.0551 e 0.95 bsc 0.0374 bsc e1 1.90 bsc 0.0748 bsc l 0.40 0.60 0.0157 0.0236 l1 0.54 ref 0.0213 ref # per tape and reel 3000 pieces controlling dimension: millimeters mechanical package diagrams top view e e1 e a side view l1 end view d a1 c 12 e1 b l 3 obsolete product
? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 9 cm1210 mechanical details (cont?d) sot23-6 mechanical specifications cm1210 devices are supplied in 6-pin sot23 pack- ages. 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 obsolete product
? 2005 california micro devices corp. all rights reserved. 10 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 04/07/05 cm1210 mechanical details (cont?d) sot143 mechanical specifications dimensions for cm1210 devices supplied in 4-pin sot143 packages are presented below. for complete information on the sot143 package, see the california micro devi ces sot143 package infor- mation 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 obsolete product
? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 11 cm1210 mechanical details (cont?d) sc70-3 mechanical specifications dimensions for cm1210 devices supplied in 3-pin sc70 packages are presented below. for complete information on the sc70-3 package, see the california micro devices sc70 package informa- tion document. package dimensions for sc70-3. package dimensions package sc70-3 (jedec name is mo-203 issue a) pins 3 dimensions millimeters min max a 0.80 1.10 a1 0.00 0.10 a2 0.70 1.00 b 0.15 0.30 c 0.08 0.25 d 1.85 2.25 e1 1.15 1.35 e 0.65 bsc e 2.00 2.40 l 0.26 0.46 # / tape and reel 3000 pieces mechanical package diagrams top view e a side view end view d a1 c 12 b e a2 e1 e 3 l obsolete product
? 2005 california micro devices corp. all rights reserved. 12 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 04/07/05 cm1210 mechanical details (cont?d) sc70-5 mechanical specifications: dimensions for cm1210 devices supplied in 5-pin sc70 packages are presented below. for complete information on the sc70-5 package, see the california micro devices sc70 package informa- tion document. package dimensions for sc70-5. package dimensions package sc70-5 (jedec name is mo-203 issue a) pins 5 dimensions millimeters min max a 0.80 1.10 a1 0.00 0.10 a2 0.70 1.00 b 0.15 0.30 c 0.08 0.25 d 1.85 2.25 e1 1.15 1.35 e 0.65 bsc e 2.00 2.40 l 0.26 0.46 # / tape and reel 3000 pieces end view c l mechanical package diagrams top view e e e1 e b a side view d a2 a1 54 12 3 obsolete product
? 2005 california micro devices corp. all rights reserved. 04/07/05 430 n. mccarthy blvd., milpitas, ca 95035-5112 tel: 408.263.3214 fax: 408.263.7846 www.calmicro.com 13 cm1210 mechanical details (cont?d) msop mechanical specifications cm1210 devices are supplied in 10-pin msop pack- ages. 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 obsolete product

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