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semiconductor technical data low voltage railtorail dual operational amplifier ordering information mc33502p MC33502D t a = 40 to +105 c plastic dip so8 d suffix plastic package case 751 (so8) pin connections order this document by mc33502/d p suffix plastic package case 626 8 1 8 1 18 7 6 5 2 3 4 inputs 1 output 1 v ee v cc output 2 inputs 2 (dual, top view) 2 1 1 motorola analog ic device data

? the mc33502 operational amplifier provides railtorail operation on both the input and output. the output can swing within 50 mv of each rail. this railtorail operation enables the user to make full use of the entire supply voltage range available. it is designed to work at very low supply voltages (1.0 v and ground), yet can operate with a supply of up to 7.0 v and ground. output current boosting techniques provide high output current capability while keeping the drain current of the amplifier to a minimum. ? low voltage, single supply operation (1.0 v and ground to 7.0 v and ground) ? high input impedance: typically 40 fa input current ? typical unity gain bandwidth @ 5.0 v = 5.0 mhz, @ 1.0 v = 4.0 mhz ? high output current (i sc = 50 ma @ 5.0 v, 10 ma @ 1.0 v) ? output voltage swings within 50 mv of both rails @ 1.0 v ? input voltage range includes both supply rails ? high voltage gain: 100 db typical @ 1.0 v ? no phase reversal on the output for overdriven input signals ? input offset trimmed to 0.5 mv typical ? low supply current (i d = 1.2 ma/per amplifier, typical) ? 600 w drive capability ? extended operating temperature range (40 to 105 c) applications ? single cell nicd/ni mh powered systems ? interface to dsp ? portable communication devices ? low voltage active filters ? telephone circuits ? instrumentation amplifiers ? audio applications ? power supply monitor and control ? compatible with vcx logic simplified block diagram this device contains 98 active transistors per amplifier. inputs input stage outputs buffer with 0 v level shift saturation detector offset voltage trim base current boost base current boost output stage this document contains information on a new product. specifications and information herein are subject to change without notice. ? motorola, inc. 1998 rev 0
mc33502 2 motorola analog ic device data maximum ratings rating symbol value unit supply voltage (v cc to v ee ) v s 7.0 v esd protection voltage at any pin h man bod model v esd 2000 v human body model voltage at any device pin v dp v s 0.3 v input differential voltage range v idr v cc to v ee v common mode input voltage range v cm v cc to v ee v output short circuit duration t s (note 1) s maximum junction temperature t j 150 c storage temperature range t stg 65 to 150 c maximum power dissipation p d (note 1) mw notes: 1. power dissipation must be considered to ensure maximum junction temperature (t j ) is not exceeded. 2. esd data available upon request. dc electrical characteristics (v cc = 5.0 v, v ee = 0 v, v cm = v o = v cc /2, r l to v cc /2, t a = 25 c, unless otherwise noted.) characteristic symbol min typ max unit input offset voltage (v cm = 0 to v cc ) v io mv v cc = 1.0 v t a = 25 c 5.0 0.5 5.0 t a = 40 to 105 c 7.0 7.0 v cc = 3.0 v t a = 25 c 5.0 0.5 5.0 t a = 40 to 105 c 7.0 7.0 v cc = 5.0 v t a = 25 c 5.0 0.5 5.0 t a = 40 to 105 c 7.0 7.0 input offset voltage temperature coefficient (r s = 50 w ) d v io / d t 8.0 m v/ c t a = 40 to 105 c input bias current (v cc = 1.0 to 5.0 v) i i ib i 40 fa common mode input voltage range v icr v ee v cc v large signal voltage gain a vol kv/v v cc = 1.0 v (t a = 25 c) r l = 10 k w 25 100 r l = 1.0 k w 5.0 50 v cc = 3.0 v (t a = 25 c) r l = 10 k w 50 500 r l = 1.0 k w 25 100 v cc = 5.0 v (t a = 25 c) r l = 10 k w 50 500 r l = 1.0 k w 25 200
mc33502 3 motorola analog ic device data dc electrical characteristics (continued) (v cc = 5.0 v, v ee = 0 v, v cm = v o = v cc /2, r l to v cc /2, t a = 25 c, unless otherwise noted.) characteristic unit max typ min symbol output voltage swing, high (v id = 0.2 v) v oh v v cc = 1.0 v (t a = 25 c) r l = 10 k w 0.9 0.95 r l = 600 w 0.85 0.88 v cc = 1.0 v (t a = 40 to 105 c) r l = 10 k w 0.85 r l = 600 w 0.8 v cc = 3.0 v (t a = 25 c) r l = 10 k w 2.9 2.93 r l = 600 w 2.8 2.84 v cc = 3.0 v (t a = 40 to 105 c) r l = 10 k w 2.85 r l = 600 w 2.75 v cc = 5.0 v (t a = 25 c) r l = 10 k w 4.9 4.92 r l = 600 w 4.75 4.81 v cc = 5.0 v (t a = 40 to 105 c) r l = 10 k w 4.85 r l = 600 w 4.7 output voltage swing, low (v id = 0.2 v) v ol v v cc = 1.0 v (t a = 25 c) r l = 10 k w 0.05 0.02 r l = 600 w 0.1 0.05 v cc = 1.0 v (t a = 40 to 105 c) r l = 10 k w 0.1 r l = 600 w 0.15 v cc = 3.0 v (t a = 25 c) r l = 10 k w 0.05 0.02 r l = 600 w 0.1 0.08 v cc = 3.0 v (t a = 40 to 105 c) r l = 10 k w 0.1 r l = 600 w 0.15 v cc = 5.0 v (t a = 25 c) r l = 10 k w 0.05 0.02 r l = 600 w 0.15 0.1 v cc = 5.0 v (t a = 40 to 105 c) r l = 10 k w 0.1 r l = 600 w 0.2 common mode rejection (v in = 0 to 5.0 v) cmr 60 75 db v ol 60 75 m v/v

output short circuit current (v in diff = 1.0 v) i sc ma v cc = 1.0 v source 6.0 13 26 sink 10 13 26 v cc = 3.0 v source 15 32 60 sink 40 64 140 v cc = 5.0 v source 20 40 140 sink 40 70 140 power supply current (per amplifier, v o = 0 v) i d ma v cc = 1.0 v 1.2 1.75 v cc = 3.0 v 1.5 2.0 v cc = 5.0 v 1.65 2.25 v cc = 1.0 v (t a = 40 to 105 c) 2.0 v cc = 3.0 v (t a = 40 to 105 c) 2.25 v cc = 5.0 v (t a = 40 to 105 c) 2.5
mc33502 4 motorola analog ic device data ac electrical characteristics (v cc = 5.0 v, v ee = 0 v, v cm = v o = v cc /2, t a = 25 c, unless otherwise noted.) characteristic symbol min typ max unit slew rate (v s = 2.5 v, v o = 2.0 to 2.0 v, r l = 2.0 k w , a v = 1.0) sr v/ m s positive slope 2.0 3.0 6.0 negative slope 2.0 3.0 6.0 unity gain bandwidth bw mhz v cc = 1.0 v 3.0 4.0 6.0 v cc = 3.0 v 3.5 4.5 7.0 v cc = 5.0 v 4.0 5.0 8.0 gain margin (r l =10 k w , c l = 0 pf) am 6.5 db phase margin (r l = 10 k w , c l = 0 pf) f m 60 deg channel separation (f = 1.0 hz to 20 khz, r l = 600 w ) cs 120 db power bandwidth (v o = 4.0 v pp , r l = 1.0 k w , thd 1.0%) bw p 200 khz total harmonic distortion (v o = 4.5 v pp , r l = 600 w , a v = 1.0) thd % f = 1.0 khz 0.004 f = 10 khz 0.01 differential input resistance (v cm = 0 v) r in >1.0 terra w differential input capacitance (v cm = 0 v) c in 2.0 pf equivalent input noise voltage (v cc = 1.0 v, v cm = 0 v, v ee = gnd, e n nv/ hz r s = 100 w ) f = 1.0 khz 30 f = 10 khz 60 figure 1. representative block diagram offset voltage trim output voltage saturation detector body bias clamp v cc v cc v cc v cc in out in+
mc33502 5 motorola analog ic device data general information the mc33502 dual operational amplifier is unique in its ability to provide 1.0 v railtorail performance on both the input and output by using a smartmos process. the amplifier output swings within 50 mv of both rails and is able to provide 50 ma of output drive current with a 5.0 v supply, and 10 ma with a 1.0 v supply. a 5.0 mhz bandwidth and a slew rate of 3.0 v/ m s is achieved with high speed depletion mode nmos (dnmos) and vertical pnp transistors. this device is characterized over a temperature range of 40 c to 105 c. circuit information input stage one volt railtorail performance is achieved in the mc33502 at the input by using a single pair of depletion mode nmos devices (dnmos) to form a differential amplifier with a very low input current of 40 fa. the normal input common mode range of a dnmos device, with an ion implanted negative threshold, includes ground and relies on the body effect to dynamically shift the threshold to a positive value as the gates are moved from ground towards the positive supply. because the device is manufactured in a pwell process, the body effect coefficient is sufficiently large to ensure that the input stage will remain substantually saturated when the inputs are at the positive rail. this also applies at very low supply voltages. the 1.0 v railtorail input stage consists of a dnmos differential amplifier, a folded cascode, and a low voltage balanced mirror. the low voltage cascoded balanced mirror provides high 1st stage gain and base current cancellation without sacrificing signal integrity. also, the input offset voltage is trimmed to less than 1.0 mv because of the limited available supply voltage. the body voltage of the input dnmos differential pair is internally trimmed to minimize the input offset voltage. a common mode feedback path is also employed to enable the offset voltage to track over the input common mode voltage. the total operational amplifier quiescent current drop is 1.3 ma/amp. output stage an additional feature of this device is an aon demando base current cancellation amplifier. this feature provides base drive to the output power devices by making use of a buffer amplifier to perform a voltagetocurrent conversion. this is done in direct proportion to the load conditions. this aon demando feature allows these amplifiers to consume only a few microamps of current when the output stage is in its quiescent mode. yet it provides high output current when required by the load. the railtorail output stage current boost circuit provides 50 ma of output current with a 5.0 v supply (for a 1.0 v supply output stage will do 10 ma) enabling the operational amplifier to drive a 600 w load. a buffer is necessary to isolate the load current effects in the output stage from the input stage. because of the low voltage conditions, a dnmos follower is used to provide an essentially zero voltage level shift. this buffer isolates any load current changes on the output stage from loading the input stage. a high speed vertical pnp transistor provides excellent frequency performance while sourcing current. the operational amplifier is also internally compensated to provide a phase margin of 60 degrees. it has a unity gain of 5.0 mhz with a 5.0 v supply and 4.0 mhz with a 1.0 v supply. low voltage operation the mc33502 will operate at supply voltages from 0.9 to 7.0 v and ground. when using the mc33502 at supply voltages of less than 1.2 v, input offset voltage may increase slightly as the input signal swings within approximately 50 mv of the positive supply rail. this effect occurs only for supply voltages below 1.2 v, due to the input depletion mode mosfets starting to transition between the saturated to linear region, and should be considered when designing high side dc sensing applications operating at the positive supply rail. since the device is railtorail on both input and output, high dynamic range single battery cell applications are now possible.
mc33502 6 motorola analog ic device data 1.0 100 0 1000 100 0 t, time (1.0 m s/div) a vol , gain (db) f, frequency (hz) 20 mv/div t, time (500 m s/div) i ib , input current (pa) t a , ambient temperature ( c) v sat , output saturation voltage (mv) figure 2. output saturation versus load resistance r l , load resistance (k w ) v cc = 2.5 v v ee = 2.5 v r l = 10 k v cc = 0.5 v v ee = 0.5 v a cl = 1.0 c l = 10 pf r l = 10 k t a = 25 c v cc = 2.5 v v ee = 2.5 v a cl = 1.0 c l = 10 pf r l = 600 w t a = 25 c v cc phase gain phase margin = 60 1.0 v/div (mv) f m , excess phase (degrees) 0 80 60 45 40 90 180 135 20 0 100 200 10 400 1.0 600 0.1 600 0.01 400 0.001 200 0 1.0 k 10 25 10 k 100 50 100 k 1.0 k 75 1.0 m 10 k 100 10 m 100 k 1.0 m 10 m 125 v ee v cc = 5.0 v v ee = 0 v r l to v cc /2 figure 3. drive output source/sink saturation voltage versus load current source saturation t a = 55 c i o , output current (ma) v cc v ee t a = 25 c t a = 125 c sink saturation t a = 125 c t a = 25 c t a = 55 c v cc v ee = 5.0 v 0 0.5 1.0 1.0 0.5 0 8.0 0 4.0 12 16 20 24 v sat , output saturation voltage (v) figure 4. input current versus temperature figure 5. gain and phase versus frequency figure 6. transient response figure 7. slew rate
mc33502 7 motorola analog ic device data f, frequency (khz) 100 0 1.0 2.0 3.0 8.0 4.0 5.0 1.0 k 10 k 100 k 1.0 m v cc = 2.5 v v ee = 2.5 v a v = 1.0 r l = 600 w t a = 25 c 10 6.0 7.0 55 25 0 25 50 75 100 125 t a , ambient temperature ( c) figure 8. maximum power dissipation versus temperature 0 200 400 600 800 1000 1200 1400 1600 dip pkg so8 pkg figure 9. open loop voltage gain versus temperature f, frequency (khz) 100 1.0 k 10 k 100 k 10 20 60 80 120 40 100 0 0 0.5 1.0 1.5 2.0 2.5 0 20 40 60 80 100 source sink pd max , maximum power dissipation (mw) v o , output voltage (v pp ) |v s | |v o | (v) ii sc i, output short circuit current (ma) f, frequency (khz) 100 1.0 k 10 k 10 100 k psr, power supply rejection (db) 1.0 m v cc = 2.5 v v ee = 2.5 v t a = 25 c cmr, common mode rejection (db) 55 25 50 75 100 125 t a , ambient temperature ( c) 025 120 110 100 90 80 70 60 50 40 30 20 d a vol , open loop gain (db) v cc = 2.5 v v ee = 2.5 v r l = 600 w v cc = 2.5 v v ee = 2.5 v t a = 25 c figure 10. output voltage versus frequency figure 11. common mode rejection versus frequency figure 12. power supply rejection versus frequency figure 13. output short circuit current versus output voltage 0 40 60 100 20 80 120 140 either v cc or v ee t a = 25 c v cc = 0.5 v v ee = 0.5 v v cc = 2.5 v v ee = 2.5 v
mc33502 8 motorola analog ic device data tc vio , input offset voltage temperature coefficient ( m v/ c) 0 10 20 30 40 50 50 v cc = 3.0 v v o = 1.5 v v ee = 0 v 60 amplifiers tested from 2 wafer lots 55 25 0 25 50 75 100 125 t a , ambient temperature ( c) 100 0 figure 14. output short circuit current versus temperature 20 40 60 80 sink source v cc = 2.5 v v ee = 2.5 v v cc , |v ee |, supply voltage (v) 2.5 0 0.5 1.0 0 0.5 1.0 1.5 figure 15. supply current per amplifier versus supply voltage with no load 1.5 2.0 2.0 2.5 t a = 125 c 100 k f, frequency (hz) 0.001 0.01 100 1.0 k 10 k 10 10 0.1 1.0 a v = 1000 v cc v ee = 1.0 v ii sc i, output short circuit current (ma) t a = 25 c t a = 55 c i cc , supply current per amplifier (ma) 40 30 20 10 0 10 20 30 40 50 percentage of amplifiers (%) input offset voltage (mv) 0 10 20 30 40 50 5.0 v cc = 3.0 v v o = 1.5 v v ee = 0 v t a = 25 c 60 amplifiers tested from 2 wafer lots 4.0 3.0 2.0 1.0 0 1.0 2.0 3.0 4.0 5.0 percentage of amplifiers (%) a v = 100 a v = 10 a v = 1.0 thd, total harmonic distortion (%) 100 k f, frequency (hz) 0.001 0.01 100 1.0 k 10 k 10 10 0.1 1.0 a v = 1000 v cc v ee = 5.0 v a v = 100 a v = 10 a v = 1.0 thd, total harmonic distortion (%) figure 16. input offset voltage temperature coefficient distribution figure 17. input offset voltage distribution figure 18. total harmonic distortion versus frequency with 1.0 v supply figure 19. total harmonic distortion versus frequency with 5.0 v supply v out = 0.5 v pp r l = 600 w v out = 0.4 v pp r l = 600 w
mc33502 9 motorola analog ic device data 0 1.0 2.0 3.0 4.0 5.0 25 0 25 50 75 100 125 t a , ambient temperature ( c) 55 0 20 40 60 20 40 1.0 m 10 m f, frequency (hz) 10 k 100 k figure 20. slew rate versus temperature 55 25 0 25 50 75 100 125 t a , ambient temperature ( c) 0 1.0 2.0 3.0 4.0 v cc v ee = 5.0 v + slew rate 25 0 25 50 75 100 125 55 0 20 40 0 20 40 60 80 100 60 80 100 v cc v ee = 5.0 v r l = 600 w c l = 100 pf 10 1.0 k 1.0 m 100 100 k 10 k 0 20 40 60 70 r t , differential source resistance ( w ) phase margin gain margin c l , capacitive load (pf) 3.0 10 100 1000 3000 30 300 0 10 20 50 60 30 40 v cc v ee = 1.0 v + slew rate v cc v ee = 1.0 v slew rate v cc v ee = 5.0 v slew rate sr, slew rate (v/ s) m v cc v ee = 5.0 v f = 100 khz gbw, gain bandwidth product (mhz) a vol , gain (db) v cc v ee = 1.0 v v cc v ee = 5.0 v v cc v ee = 5.0 v v cc v ee = 1.0 v r l = 600 w c l = 0 t a = 25 c 0 20 40 60 70 m , phase margin ( ) f a v , gain margin (db) phase margin gain margin t a , ambient temperature ( c) m , phase margin ( ) f a v , gain margin (db) v cc v ee = 5.0 v r l = 600 w c l = 100 pf t a = 25 c 0 10 20 50 60 30 40 m , phase margin ( ) f a v , gain margin (db) figure 21. gain bandwidth product versus temperature figure 22. voltage gain and phase versus frequency figure 23. gain and phase margin versus temperature figure 24. gain and phase margin versus differential source resistance figure 25. feedback loop gain and phase versus capacitive load v cc v ee = 5.0 v r l = 600 w t a = 25 c 50 30 10 phase margin gain margin 10 30 50
mc33502 10 motorola analog ic device data 1234567 v cc v ee , supply voltage (v) 0 0 20 40 20 40 60 80 100 60 80 100 phase margin gain margin r l = 600 w c l = 0 t a = 25 c 10 1.0 k 100 100 k 10 20 30 40 50 60 70 10 k f, frequency (hz) v cc v ee = 5.0 v t a = 25 c 55 25 0 25 50 75 100 125 0 0.4 0.8 1.2 1.6 a vol 10 db r l = 600 w v cc v ee , supply voltage (v) 0 1.0 2.0 3.0 4.0 0 20 40 60 120 5.0 6.0 r l = 600 w t a = 25 c 80 100 v cc , |v ee |, supply voltage (v) 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 2.0 4.0 6.0 8.0 r l = 600 w t a = 25 c figure 26. channel separation versus frequency 30 100 10 k 100 k 300 k 300 30 k a v = 100 0 20 40 100 120 60 80 v cc v ee = 5.0 v r l = 600 w v o = 4.0 v pp t a = 25 c f, frequency (hz) a v = 10 cs, channel separation (db) 0 en, equivalent input noise voltage (nv/ hz) 0 m , phase margin ( ) f a v , gain margin (db) t a , ambient temperature ( c) v cc v ee , useable supply voltage (v) a vol , open loop gain (db) figure 27. output voltage swing versus supply voltage figure 28. equivalent input noise voltage versus frequency figure 29. gain and phase margin versus supply voltage figure 30. useable supply voltage versus temperature figure 31. open loop gain versus supply voltage v o , output voltage (v pp )
mc33502 11 motorola analog ic device data r t 470 k r2 220 k r1b 360 k r1a 360 k c t 1.0 nf 1.0 v f o 1.0 khz 1.0 v pp r1 10 k r f 100 k r2 10 k c2 400 pf 0.5 v 0.5 v c1 80 nf v o a f f l figure 32. 1.0 v oscillator figure 33. 1.0 v voiceband filter f l 1 2 r1c1 200 hz f h 1 2 r f c f 4.0 khz a f 1 r f r2 11 + + f h f o 1 2r t c t in 2(r1a r1b) r2
mc33502 12 motorola analog ic device data 15 v 10 79 mc34025 5 15 13 output a output b 22 k 470 pf 100 k 1.0 k from current sense 3320 1.0 k mc33502 provides current sense amplification and eliminates leading edge spike. fb 4.7 4.7 0.1 figure 34. power supply application r2 3.3 k r3 1.0 k r1 1.0 k i o 1.0 v r4 1.0 k r5 2.4 k r l 75 v l 8 7 4 5 6 v o for best performance, use close tolerance resistors. i o d i o / d i l mc33502 i l figure 35. 1.0 v current pump + + 12 8 14 11 4 16 6 1 3 2 i l 435 ma 463 m a 212 ma 492 m a 120 x 10 6 5.0 v v ref
mc33502 13 motorola analog ic device data p suffix plastic package case 62605 issue k d suffix plastic package case 75106 (so8) issue t outline dimensions notes: 1. dimension l to center of lead when formed parallel. 2. package contour optional (round or square corners). 3. dimensioning and tolerancing per ansi y14.5m, 1982. 14 5 8 f note 2 a b t seating plane h j g d k n c l m m a m 0.13 (0.005) b m t dim min max min max inches millimeters a 9.40 10.16 0.370 0.400 b 6.10 6.60 0.240 0.260 c 3.94 4.45 0.155 0.175 d 0.38 0.51 0.015 0.020 f 1.02 1.78 0.040 0.070 g 2.54 bsc 0.100 bsc h 0.76 1.27 0.030 0.050 j 0.20 0.30 0.008 0.012 k 2.92 3.43 0.115 0.135 l 7.62 bsc 0.300 bsc m 10 10 n 0.76 1.01 0.030 0.040 seating plane 1 4 5 8 a 0.25 m cb ss 0.25 m b m h c x 45 l dim min max millimeters a 1.35 1.75 a1 0.10 0.25 b 0.35 0.49 c 0.19 0.25 d 4.80 5.00 e 1.27 bsc e 3.80 4.00 h 5.80 6.20 h 0 7 l 0.40 1.25 0.25 0.50 notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. dimensions are in millimeter. 3. dimension d and e do not include mold protrusion. 4. maximum mold protrusion 0.15 per side. 5. dimension b does not include dambar protrusion. allowable dambar protrusion shall be 0.127 total in excess of the b dimension at maximum material condition. d e h a b e b a1 c a 0.10
mc33502 14 motorola analog ic device data motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. atypicalo parameters which may be provided in motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the motorola product could create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and are registered trademarks of motorola, inc. motorola, inc. is an equal opportunity/affirmative action employer.
mc33502 15 motorola analog ic device data mfax is a trademark of motorola, inc. how to reach us: usa / europe / locations not listed : motorola literature distribution; japan : nippon motorola ltd.: spd, strategic planning office, 141, p.o. box 5405, denver, colorado 80217. 13036752140 or 18004412447 4321 nishigotanda, shagawaku, tokyo, japan. 0354878488 customer focus center: 18005216274 mfax ? : rmfax0@email.sps.mot.com touchtone 1 6022446609 asia / pacific : motorola semiconductors h.k. ltd.; 8b tai ping industrial park, motorola fax back system us & canada only 18007741848 51 ting kok road, tai po, n.t., hong kong. 85226629298 http://sps.motorola.com/mfax/ home page : http://motorola.com/sps/ mc33502/d ?

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