sound processor for cd radio cassette player BD3871FS description dimension (units : mm) BD3871FS is a sound processor for cd/md radio cassette player . this ic provides all functions, such as input selector (3 input sources), an input gain amplifier (25db, 27db, 29db),and a surround, tone (bass, treble). this ic can be controlled by a 2-wire serial data interface. 00w073a 1) can select center frequency and q value of bass characteristics by external components. 2) mute switch at the input terminal can reduce cross talk. 3) surround function is composed without external components. 4) ideal for energy-saving designs with low current consumption due to the adoption of the bicmos process, allowing easy-design of the regulator blocks in the set. ssop-a24 cd radio cassette player , md radio cassette player , micro component stereo september , 2000 features applications absolute maximum ratings (t a=25 ? c) power supply voltage power dissipation operating temperature range storage temperature range parameter symbol limits unit vcc pd t opr t stg 10 800 +75 +125 25 55 ~ ~ mw ? c ? c v operating voltage v dd 8 4.5 9.5 v recommended operating conditions (t a=25 ? c) parameter min. max. unit t yp. symbol * * derating : 8.0mw/ ? c for operation above t a=25 ? c 24 1 0.8 7.8 0.3 5.4 0.2 1.8 0. 1 0. 1 1 0.36 0. 1 12 0.3min 10.0 0.2 13 0.15 0. 1 0. 15
application circuit circuit current i q ? 22 ? 1.6 ? ? e 90 +12 e 16 +14 e 14 +12 e 12 +16 e 12 +14 e 10 +10 e 14 8 8 24 0.01 2.1 4.5 40 e 87 10 21 26 0.1 ? 15 80 e 84 12 ma db % v rms v rms v rms db db db db g v thd v omax vno vmno vri gb tb vsur output voltage gain t otal harmonic distortion maximum output voltage residual noise voltage output residual noise voltage v olume control range bass control range t reble control range surround gain (antiphase) no signal v out =1v rms, bw=400~30khz thd=1%, bw=400~30khz rg=0 ? , v ol= e , bw=ihf e a rg=0 ? , v ol=0db, bw=ihf e a v in =1v rms, 1db/step v in =100mv rms, 2db/step v in =100mv rms, 2db/step v in =100mv rms electrical characteristics symbol min. max. unit conditions t yp. parameter (unless otherwise noted ; t a=25 ? c, vcc=8v , f=1khz, v i=50mv rms, rl=10k ? , rg=600 ? , input gain=24db, v ol=0db, bass,treble=0db, surround=off) unit resistance : ? capacitor : f + 10 c2 + 47 c1 b2 b1 a2 a1 + 10 + 10 + + 10 clock data latch vcc out2 10 out1 0.0022 0.0022 0.1 0.1 5.6k 390k surround 13 14 15 16 17 18 19 20 21 22 23 24 12 11 10 9 8 7 6 5 4 3 2 1 treble 1 fc=8khz treble2 fc=8khz bass 2 f 0 =80hz bass 1 f 0 =80hz logic vcc/2 vcc/2 vcc/2 vcc/2 vcc/2 BD3871FS 0db ~ e 87db e 50k 4.7k 0.33 0.1 0.1 5.6k 390k + 10 + 10 4.7k + 10 + 10 + 10 50k 50k 50k 50k 50k
appendix appendix1-rev1.0 the products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document use silicon as a basic material. products listed in this document are no antiradiation design. about export control order in japan products described herein are the objects of controlled goods in annex 1 (item 16) of export trade control order in japan. in case of export from japan, please confirm if it applies to "objective" criteria or an "informed" (by miti clause) on the basis of "catch all controls for non-proliferation of weapons of mass destruction.
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