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1/15 www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. middle power class-d speaker amplifiers analog input / btl output class-d speaker amplifier BD5427MUV description BD5427MUV is a 7w + 7w stereo class-d power amplifie r ic, developed for space-saving and low heat-generation applications such as low-profile tv sets. the ic employ s state-of-the-art bipolar, cmos, and dmos (bcd) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. with this technology, the ic has achieved high efficiency of 80% (7w + 7w output with 8 ? load), which is the top class in the industry. the ic, in addition, employs a comp act back-surface heat radiation type power package to achieve low power consumption and low heat generati on and eliminates necessity of installing an external radiator, up to a total output of 14w. this product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system. features 1) a high efficiency of 80% (7w + 7w output with 8 ? load), which is the highest grade in the industry and low heat-generation. 2) driving a lowest rating load of 6 ? is allowed. 3) pop noise upon turning power on/off and power interruption has been reduced. 4) high-quality audio muting is implemented by soft-switching technology. 5) high-reliability design provided with built-in protection circuits against high temperatures, against vcc shorting and gnd shorting, against reduced-voltage, and against applying dc voltage to speaker. 6) a master/slave function allowing synchroniza tion of multiple devices reduces beat noises. 7) adjustment of internal pwm sampling clock frequencie s (250khz to 400khz) allows easy protective measures against unwanted radio emission to am radio band. 8) a compact back-surface heat radiation type power package is employed. vqfn048v7070 7.0mm 7.0mm 1.0mm, pitch 0.5mm absolute maximum ratings a circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability. the following values assume ta =25 . for latest values, refer to delivery specifications. parameter symbol rating unit conditions supply voltage v cc +20 v pin 2, 14, 15, 22, 23, 38, 39, 46, 47 (note 1, 2) power dissipation p d 3.28 w (note 3) 4.8 w (note 4) input voltage for signal pin v in -0.2 ~ +7.2 v pin 6, 7 (note 1) input voltage for control pin v cont -0.2 ~ vcc+0.2 v pin 28, 32 (note 1) input voltage for clock pin v osc -0.2 ~ +7.2 v pin 31 (note 1) operating temperature range t opr -40 ~ +85 storage temperature range t stg -55 ~ +150 maximum junction temperature t jmax +150 (note 1) a voltage that can be applied with reference to gnd (pins 5, 18, 19, 42, and 43) (note 2) pd and tjmax=150 must not be exceeded. (note 3) 114.3mm 76.2mm 1.6mm fr4 2- layer glass epoxy board (copper area 5505mm 2 ) installed. if used under ta=25 or higher, reduce 26.2mw for increase of every 1 . the board is provided with thermal via. (note 4) 114.3mm 76.2mm 1.6mm fr4 4- layer glass epoxy board (copper area 5505mm 2 ) installed. if used under ta=25 or higher, reduce 38.4mw for increase of every 1 . the board is provided with thermal via. no.10075ebt07
technical note 2/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. the following values assume ta =25 . check for latest values in delivery specifications. parameter symbol rating unit conditions supply voltage v cc +10 ~ +16.5 v pin 2, 14, 15, 22, 23, 38, 39, 46, 47 load resistance r l 6 ~ 16 ? (note 5) (note 5) pd should not be exceeded. except otherwise specified t a = 25 , v cc = 12v, f in = 1khz, r g = 0 ? , r l = 8 ? mutex="h", ms="l" for latest values, refer to delivery specifications. parameter symbol limits unit conditions whole circuit circuit current 1 (sampling mode) icc1 25 ma with no signal circuit current 2 (muting mode) icc2 10 ma mutex = ?l? control circuit ?h? level input voltage vih 2.3 ~ 12 v mutex, ms ?l? level input voltage vil 0 ~ 0.8 v mutex, ms audio circuit voltage gain g v 28 db p o = 1w maximum output power (note 6) p o 7 w thd+n = 10% total harmonic distortion (note 6) thd 0.1 % p o = 1w, bw=20hz ~ 20khz crosstalk ct 85 db p o = 1w, rg = 0 ? , bw = ihf-a output noise voltage (sampling mode) v no 80 vrms rg = 0 ? , bw = ihf-a residual noise voltage (muting mode) v nom 1 vrms rg = 0 ? , bw = ihf-a, mutex = ?l? internal sampling clock frequency f osc 250 khz ms = ?l? (in master operation) (note 6) the rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components, and power supplies. the reference values are those applicable to the device and components directly installed on a board spec ified by us.
technical note 3/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 0.01 0.1 1 10 100 0.001 0.01 0.1 1 10 100 output power (w) thd+n (%) 100hz 1khz 6khz vcc=12v r l =8 bw=2020khz 0.01 0.1 1 10 100 10 100 1000 10000 100000 frequency (hz) thd+n (%) vcc=12v r l =8 po=1w bw=2020khz 0 5 10 15 20 25 30 35 40 10 100 1000 10000 100000 frequency (hz) voltage gain (db) vcc=12v r l =8 po = 1 w l=33h c=0.47f c= 0 . 1 f -100 -80 -60 -40 -20 0 10 100 1000 10000 100000 frequency (hz) crosstalk (db) vcc=12v r l =8 po=1w bw=2020khz -100 -80 -60 -40 -20 0 0.001 0.01 0.1 1 10 100 output power (w) crosstalk (db) vcc=12v r l =8 fin=1khz bw=2020khz 0 5 10 15 20 8 1012141618 vcc (v) output power (w) r l =8 fin=1khz thd=1 0% electrical characteristic curves (reference data) (1) under stereo operation(r l =8 ? ) fig. 1 thd+n output power fig. 2 thd+n frequency fig. 3 voltage gain - frequency fig. 4 crosstalk - frequency fig. 5 crosstalk - output power fig. 6 output power - power supply voltage
technical note 4/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 output power (w/ch) efficiency (%) vcc=10v r l =8 fin=1khz 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 output power (w/ch) efficiency (%) vcc=12v r l =8 fin=1khz 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 output power (w/ch) efficiency (%) vcc=16.5v r l =8 fin=1khz 0 1 2 3 0 5 10 15 20 25 30 35 40 total output power (w) i cc (a) vcc=10v vcc=12v vcc=16.5v r l =8 fin=1khz 0 10 20 30 40 50 60 70 80 90 100 8 1012141618 vcc (v) icc (ma) sampling mute r l =8 o??r -140 -120 -100 -80 -60 -40 -20 0 10 100 1000 10000 100000 frequency (hz) noi se fft (dbv) vcc=12v r l =8 o??r bw=2020khz electrical characteristic curves (reference data) ? continued fig. 7 efficiency - output power fig. 8 efficiency - output power fig. 9 efficiency - output power fig. 10 current consumption - output power fig. 11 current consumption - power supply voltage fig. 12 fft of output noise voltage without signal without signal
technical note 5/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. electrical characteristic curves (reference data) ? continued mutex pin 28 tm pin 34 10msec/div 2v/div 5v/div 10v/div vcc=12v r l =8 po=500mw fin=500hz mutex pin 28 tm pin 34 10msec/div 2v/div 5v/div 10v/div vcc=12v r l =8 po=500mw fin=500hz speaker output speaker output fig. 13 wave form when releasing soft-mute fig. 14 wave form when activating soft-mute vcca vhold pin 35 vcc=12v r l =8 po=500mw fin=3khz 20msec/div 2v/div 5v/div 5v/div tm pin 34 vcca vhold pin 35 vcc=12v r l =8 po=500mw fin=3khz 2msec/div 2v/div 5v/div 5v/div tm pin 34 speaker output speaker output fig. 15 wave form on instantaneous power interruption (20msec / div) fig. 16 wave form on instantaneous power interruption (2msec / div)
technical note 6/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 0 5 10 15 20 25 8 1012141618 vcc (v) output power (w) r l =6 fin=1khz thd=10% 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 output power (w/ch) efficiency (%) vcc=10v r l =6 fin=1khz 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 output power (w/ch) efficiency (%) vcc=12v r l =6 fin=1khz 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 output power (w/ch) efficiency (%) vcc=16.5v r l =6 fin=1khz 0 1 2 3 4 0 5 10 15 20 25 30 35 40 tota l output power (w) icc (a) vcc=10v vcc=12v vcc=16.5v r l =6 fin=1khz electrical characteristic curves (reference data) (2) under stereo operation (r l =6 ? ) fig. 17 output power - power supply voltage fig. 18 efficiency - output power fig. 19 efficiency - output power fig. 20 efficiency - output power fi g. 21 current consumption - output power dotted lines of the graphs indicate c ontinuous output power to be obtained on musical signal source or by installing additional heat sinks.
technical note 7/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. pin assignment top view 1 2 3 4 5 6 7 8 9 10 11 12 48 47 46 45 44 43 42 40 41 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 ramp generator clock control driver 2p driver 2n pwm1 pwm2 13 14 15 16 17 18 19 21 20 22 23 24 driver 1p driver 1n mute control n.c. warning error soft mute n.c. n.c. gnda fila filp vcca under voltage protection high temperature protection protections & logic output short protection output dc voltage protection n.c. n.c. n.c. power limit power-off detector n.c. vccp1p vccp1p out1p out1p gndp1 gndp1 out1n out1n vccp1n vccp1n n.c. n.c. vccp2p vccp2p out2p out2p gndp2 gndp2 out2n out2n vccp2n vccp2n n.c. bsp1p n.c. in1 in2 gnda fila filp vcca bsp2p bsp1n warning error mutex n.c. n.c. osc ms rosc tm vhold bsp2n n.c. n.c. n.c. n.c. n.c. n.c. n.c. fig. 22 pin assignment diagram outer dimensions and inscriptions bd5427 lot no. type 1pin mark fig. 23 outer dimensions and inscriptions of vqfn048v7070 package
technical note 8/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 2 5 3 2 5 4 2 6/7 5 20k explanation of pin functions (provided pin voltages are typical values.) no. symbol pin voltage pin description internal equalizing circuit 2 vcca vcc analog system power pin 3 filp vcc+35 12 pwm system bias pin connect a capacitor. 4 fila 3.5v analog signal system bias pin connect a capacitor. 5 gnda 0v analog system gnd pin 6 7 in2 in1 3.5v ch2 analog signal input pin ch1 analog signal input pin input audio signal via a capacitor.
technical note 9/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 12 14 , 15 25 16,17 18,19 22,23 20,21 18,19 2 5 26 2k 2 5 27 2k explanation of pin functions - continued no. symbol pin voltage pin description internal equalizing circuit 12 bsp1p - ch1 positive bootstrap pin connect a capacitor. 14, 15 vccp1p vcc ch1 positive power system power supply pin 16, 17 out1p vcc ~ 0v ch1 positive pwm signal output pin connect with output lpf. 18, 19 gndp1 0v ch1 power system gnd pin 20, 21 out1n vcc ~ 0v ch1 negative pwm signal output pin connect with output lpf. 22, 23 vccp1n vcc ch1 negative power system power supply pin 25 bsp1n - ch1 negative bootstrap pin connect a capacitor 26 warning h: 5v l: 0v warning output pin pin to notify operation warning. h: under warning l: normal operation connect a resister. 27 error h: 5v l: 0v error output pin a pin for notifying operation errors. h: error l: normal operation connect a resister.
technical note 10/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 2 5 28 1 20k 80k 2 5 32 120k 80k 2 6/7 5 20k explanation of pin functions - continued no. symbol pin voltage pin description internal equalizing circuit 28 mutex - audio mute control pin h: mute off l: mute on 8, 9 10, 11 13, 24 29, 30 37, 48 n.c. - n.c. pin nothing is connected with ic internal circuit. 31 osc - sampling clock signal input/output pin when using two or more sampling clocks, connect via a capacitor. 32 ms - master/slave switching pin switching of master/slave functions on a sampling clock signal. h: slave operation l: master operation 33 rosc 5.6v internal pwm sampling clock frequency setting pin usually the pin is used open. to adjust an internal sampling clock frequency, connect a resister.
technical note 11/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. 42,43 46,47 1 44,45 42 ,4 3 38,39 36 40,41 2 5 35 180k 39 0 k 2 5 34 explanation of pin functions - continued no. symbol pin voltage pin description internal equalizing circuit 34 tm 0 ~ 5v audio muting constant setting pin connect a capacitor. 35 vhold 0.68vcc instantaneous power interruption detecting voltage setting pin connect a capacitor. to adjust a detecting voltage, connect a resister. 36 bsp2n - ch2 negative bootstrap pin connect a capacitor. 38, 39 vccp2n vcc ch2 negative power system power supply pin 40, 41 out2n vcc ~ 0v ch2 negative pwm signal output pin connect an output lpf. 42, 43 gndp2 0v cch2 power system gnd pin 44, 45 out2p vcc ~ 0v ch2 positive pwm signal output pin connect an output lpf. 46, 47 vccp2p vcc ch2 positive power system power supply pin 1 bsp2p - ch2 positive bootstrap pin connect a capacitor.
technical note 12/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. application circuit diagram ? vcc=10v ~ 16.5v 8 9 10 11 12 48 47 46 45 44 43 42 40 41 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 ramp generator clock control driver 2p driver 2n pwm 1 pwm 2 13 14 15 16 17 18 19 21 20 22 23 24 driver 1p driver 1n mute control n.c. warning error soft mute n.c. n.c. under voltage protection high temperature protection protections & logic output short protection output dc voltage protection n.c. n.c. power - off det ect or 0.1 f 0.1 f vccp1 gndp 1 sp 1 ch (8 ) 0.1 f 0.1 f 3 3 h 3 3 h 0. 6 8 f 0. 6 8 f + 0. 4 7 f 1 0 f 0.1 f 0.1 f vccp2 gndp 2 sp 2 ch (8 ) 0.1 f 0.1 f 3 3 h 3 3 h 0. 6 8 f 0. 6 8 f + 0. 4 7 f 1 0 f mutex warning output error output slave master career i/o 0.1 f 3.3 f gndd open n.c. n.c. n.c. n.c. n.c. gndd 100k 100k gndd c 2 2 c 1 4 c 1 2 c 2 5 l 4 0 c 1 6 c 2 0 l 1 6 l 2 0 c 1 7 c 1 5 c1 c 4 6 c 3 8 c 3 6 l 4 4 c 4 4 c 4 0 c 4 1 c35 c34 r27 r26 c 3 9 c31 0.1 f n.c. n.c. n.c. n.c. n.c. n.c. n.c. n.c. n.c. n.c. 1 2 3 4 5 6 7 gnda fila filp vcca gnda vcca 1 f 10 f + 10 f 0.1 f 2.2 f sp input 1ch sp input 2ch 2.2 f c7 c6 c4 c3 c5 c2 fig. 24 circuit diagram of stereo operation with 8 ? load
technical note 13/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. table 1 bom list of stereo operation with 8 ? load no. item part number vendor configuration value rated voltage tolerance temperature characteristics quantity reference mm inch 1 ic BD5427MUV rohm vqfn048v7070 - - - - 1 ic1 2 c grm219b31e684ka88 murata 2012 0805 0.68f 25v 10% 10% 4 c1, c12, c25, c36 3 c grm188r11h104ka93 murata 1608 0603 0.1f 50v 15% 15% 5 c5, c14, c22, c38, c46 4 c grm21bb11h104ka01 murata 2012 0805 0.1f 50v 10% 10% 4 c16, c20, c40, c44 5 c 25st225m3225 rubycon 3225 1210 2.2f 25v 20% 5% 2 c6, c7 6 c 50st474m3225 rubycon 3225 1210 0.47f 50v 20% 5% 2 c17, c41 7 c grm21bb31e335ka75 murata 2012 0805 3.3f 25v 10% 10% 1 c35 8 c grm188b11e104ka01 murata 1608 0603 0.1f 25v 10% 10% 2 c31, c34 9 c grm21bb11c105ka01 murata 2012 0805 1f 16v 10% 10% 1 c3 10 c grm21bb31c106ke15 murata 2012 0805 10f 16v 10% 10% 1 c4 11 c 25svpd10m sanyo 6666 2626 10f 25v 20% 25% 3 c2, c15, c39 12 r mcr01mzpf1003 rohm 1005 0402 100k ? 50v 1% 200ppm/ 2 r26, r27 no. item part number vendor configuration value tolerance dc resistance rated dc current quantity reference mm 13 l 7g09b-330m sagami 10910 33h2 20% 52m ? max. 2.0a max. 2 l16, l20, l40, l44
technical note 14/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. ordering part number 1. about absolute maximum ratings if an applied voltage or an operating temperature exceeds an absolute maximum rating, it may cause destruction of a device. a result of destruction, whether it is short mode or open mode, is not predictable. ther efore, provide a physical safety measure such as fuse, against a special mode that may violate conditions of absolute maximum ratings. 2. about power supply line as return of current regenerated by bac k emf of output coil happens, take steps such as putting capacitor between power supply and gnd as a electric pathway for the regenerated current. be sure that there is no problem with each property such as emptied capacity at lo wer temperature regarding electrolytic capacitor to decide capacity value. if the connected power supply does not have suff icient current absorption capacity, rege nerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and gnd pins. 3. potential of gnd (5 , 18, 39, 42, and 43 pins) potential of the gnd terminal must be t he lowest under any operating conditions. 4. about thermal design perform thermal design with sufficient margins, in consideration of maximum power dissipation pd under actual operating conditions. this product has an exposed fram e on the back of the package, and it is assumed that the frame is used with measures to improve efficiency of heat dissi pation. in addition to front surface of board, provide a heat dissipation pattern as widely as possible on the back also. a class-d power amplifier has heat dissipation efficiency far higher than that of conventi onal analog power amplifier and generates less heat. however, extra attention must be paid in thermal design so that a power dissipation pdiss should not exceed the maximum power dissipation pd. maximum power dissipation w ta -t pd aj jmax ? tjmax: maximum temperature junction = 150[ ] ta: operating ambient temperature [ ] ja: package thermal resistance [ /w] po: output power [w] : efficiency power dissipation w 1- 1 pp o diss ? ? ? ? ? ? ? ? ? ? ? 5. about operations in strong electric field note that the device may malfuncti on in a strong electric field. 6. thermal shutdown (tsd) circuit this product is provided with a built-in thermal shutdown circuit. when the the rmal shutdown circuit operates, the output transistors are placed under open status. the thermal shutdown circuit is primarily intended to shut down the ic avoiding thermal runaway under abnormal conditions with a chip temperature exceeding tjmax = 150 , and is not intended to protect and secure an electrical appliance. accordingly, do not use this circuit function to protect a customer's electrical appliance. 7. about shorting between pins and installation failure be careful about direction and displacement of an lsi when installing it onto the board. faulty installation may destroy the lsi when the device is energized. in addition, a foreign matter getting in between lsi pins, pins and power supply, and pins and gnd may cause shorting and destruction of the lsi. 8. about power supply startup and shutdown when starting up a power supply, be sure to place the mutex pin (pin 28) at ?l? level. when shutting down a power supply also, be sure to place the pin at ?l? level. those processes reduce pop noises generated upon turning on and off the power supply. in addition, all power supply pins must be started up and shut down at the same time. 9. about warning output pin (pin 26) and error output pin (pin 27) a warning flag is output from the warni ng output pin upon operati on of the high-temperatur e protection function and under-voltage protection function. and an error flag is output from the erro r output pin upon operation of vcc/gnd shorting protection function and speaker dc voltage applying protection function. these flags are the function which the condition of this product is shown in. the use which aimed at the protection except for this product is prohibition. 10. about n.c. pins (pins 8, 9, 10, 11, 13, 24, 29, 30, 37, and 48) the n.c. (non connection) pins are not c onnected with an internal circuit. leave the pins open or connect them to gnd.
technical note 15/15 BD5427MUV www.rohm.com 2010.05 - rev.b ? 2010 rohm co., ltd. all rights reserved. ordering part number b d 5 4 2 7 m u v - e 2 part no part no. package muv: vqfn048v7070 packaging and forming specification e2: embossed tape and reel (unit : mm) vqfn048v7070 0.08 s s 1pin mark 11 2 13 24 25 36 37 48 0.02 +0.03 - 0.02 c0.2 0.5 0.75 1.0max (0.22) 0.25 +0.05 - 0.04 7.0 0.1 4.7 0.1 4.7 0.1 7.0 0.1 0.4 0.1 ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 1500pcs e2 () direction of feed reel 1pin
r1010 a www.rohm.com ? 2010 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the products. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospac e machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

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