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| 1/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. sound processors for boom box / mini-component stereo single power supply sound processors with built-in pre amplifier for tape recording and play back (with integrated 2-/3- band equalizer) BD3401KS2,bd3402ks2 description the sound processor with built-in record/play functions for casse tte players, is suited for sound quality products such as, boom box, mini- and micro-audio systems. it incorporates various functions ranging from audio source selectors to preamplifiers at the front stage, pr eamplifier for cassette recording/playing, and a 2-wire serial bus. features 1) provides surround and bass boost with the soft-switching feature to reduce the shock sound at switching (BD3401KS2) 2) provides a specialized power supply terminal in a digital ci rcuit, in order to set and maintain the state inside the ic by the minute stand-by current. 3) built-in preamplifier for cassette recording/playing allows for minimal external components, freeing up board space. 4) arranges all i/o terminals to a singl e point and allows easy pcb routing. 5) volume and tone implemented with a resistance ladder circ uit; achieving high performance with low noise and low distortion 6) energy-saving design resulting in low current consumption, by utilizi ng the bicmos process. it has the advantage in quality over the scaling down the power heat control of the internal regulators. applications boom box, mini-audio systems, and micro-audio systems. product lineup parameter BD3401KS2 bd3402ks2 equalizer 3 band(bass, middle, treble) 2 band(bass, treble) volume 0 to -44db/2db step -44 to -76db/4db step, - db 0 to -44db/2db step -44 to -76db/4db step, - db cassette recording/playing amplifier karaoke - microphone input - subwoofer output - output for spectrum analyzer - surround - bass boost - package sqfp-t64 sqfp-t64 absolute maximum ratings (ta=25 ) items symbol ratings unit power supply voltage vcc 10 v vdd 6 v power dissipation pd 1200* mw input voltage range vin gnd-0.3 to vcc+0.3 v operating temperature ra nge topr -25 to +75 storage temperature range tstg -55 to +125 * reduced by 12 mw/ over 25 , when installed on the standard board (size: 70 70 1.6mm). operating voltage range device name symbol range unit BD3401KS2 bd3402ks2 vcc 8 to 9.5 v vdd 3 to 5.5 no.10086eat03
technical note 2/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ? ? ? - - - - ? ? - ? - ? - ? ? - - - - - ? - - - - ? technical note 3/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 parameter symbol limits unit conditions min typ. max mic total harmonic distortion ratio thdmic - - - - - technical note 4/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ? - - - - - - - - - - - - - - - - - - ? ? ? technical note 5/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ? ? ? ? - - - - - - - - - - - - - - - - - - - - technical note 6/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ? ? technical note 7/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 (bd3402ks2) ? ? ? ? * ?* ? ? ? ??? ? ? technical note 8/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ? ? ? ??? ? ??? technical note 9/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 technical note 10/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 technical note 11/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 technical note 12/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 technical note 13/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 input voltage(vrms) output voltage(vrms) -15 -10 -5 0 5 10 15 10 100 1000 10000 100000 frequency(hz) gain(db) +8db(100hz) -8db(100hz) -8db ( ) ( ) frequency(hz) gain(db) technical note 14/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 0 10 20 30 40 50 60 70 80 90 10 100 1000 10000 100000 frequency(hz) gain(db) 0.01 0.1 1 10 0.0001 0.001 0.01 input voltage(vrms) output voltage(vrms) 0.01 0.1 1 10 0.1 1 10 output voltage(vrms) thd+n(%) fig.16 amp gain - frequency (pb) fig.17 output voltage ? input voltage (pb) fig.18 total harmonic distortion ratio - output voltage (pb) -15 -10 -5 0 5 10 15 10 100 1000 10000 100000 frequency(hz) gain(db) 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 input voltage(vrms) output voltage(vrms) 0.01 0.1 1 10 0.001 0.01 0.1 1 output voltage(vrms) thd+n(%) -20 -10 0 10 20 30 40 10 100 1000 10000 100000 frequency(hz) gain(db) fig.19 amp gain - frequency (rec) fig.20 output voltage ? input voltage (rec) fig.21 to t a l harmonic distortion ratio ? output voltage (rec) fig.22 ams gain - frequency (BD3401KS2) technical note 15/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 technical note 16/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 13) constraints of serial control (1) on soft-switching of the bass boost, surround and am s functions, data must not be serially sent to the functions involved before the swit ching operation is completed. data (1) to (8) can be serially sent immediately after sending data (9). fig.23 (2) when switching ams on and off, a shock sound will be generated. using mute provided on volume, control data should be sent in order to avoid outputting the shock sound from volout1,2 (pin32,33) as described in the figure below: fig.24 t data(9) data (9) direction for functions that need to use soft-switch, data (data (9)) can be serially sent on the same select address. the time interval: t(sec) between data (9) must be set to have a suffiecient delay time. for example, 100ms or more when c on pin57 is 0.33f. volume mute data direction ams off t 2 volume setting data t 1 ams on ams off ? ? technical note 17/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ambient temper atur e: ta( ) power dissipation : pd mw) technical note 18/18 www.rohm.com 2010.10 - rev. a ? 2010 rohm co., ltd. all rights reserved. BD3401KS2,bd3402ks2 ? order quantity needs to be multiple of the minimum quantity. 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 specied herein is subject to change for improvement without notice. the content specied 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 specications, 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 specied 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 specied 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 specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied 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, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re 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 specied 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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