00W073A Sound processor for CD radio cassette player BD3871FS Description 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. Dimension (Units : mm) 10.0±0.2 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. 0.8 0.15±0. 1 7.8±0.3 1.8±0. 1 0. 1 1 1 Features 13 5.4±0.2 24 12 0.36±0. 1 0.3Min 0. 15 SSOP-A24 Applications CD radio cassette player, MD radio cassette player, Micro component stereo Absolute Maximum Ratings (Ta=25˚C) Parameter Symbol Limits Vcc 10 Power supply voltage Pd Power dissipation 800 Unit V * mW Operating temperature range Topr –25 ~ +75 Storage temperature range Tstg –55 ~ +125 ˚C ˚C * Derating : 8.0mW/˚C for operation above Ta=25˚C Recommended Operating Conditions (Ta=25˚C) Parameter Operating voltage Symbol Min. Typ. Max. Unit VDD 4.5 8 9.5 V September, 2000 Electrical characteristics (Unless otherwise noted ; Ta=25˚C, Vcc=8V, f=1kHz, Vi=50mVrms, RL=10kΩ , Rg=600Ω , INPUT GAIN=24dB, Vol=0dB, bass,treble=0dB, surround=OFF) Parameter Symbol Min. Typ. Max. Unit Circuit current IQ — 8 21 mA Output voltage gain GV 22 24 26 dB Total harmonic distortion THD — 0.01 0.1 % Maximum output voltage Vomax 1.6 2.1 — Vrms Vno — 4.5 15 µVrms Rg=0Ω , Vol=–•, Bw=IHF–A Rg=0Ω , Vol=0dB, Bw=IHF–A Residual noise voltage Conditions No signal VOUT=1Vrms, Bw=400~30kHz THD=1%, Bw=400~30kHz Vmno — 40 80 µVrms VRI –90 –87 –84 dB VIN=1Vrms, 1dB/STEP Bass control range GB +16 –12 +14 –10 VIN=100mVrms, 2dB/STEP TB +14 –14 +12 –12 dB Treble control range +12 –16 +10 –14 dB VIN=100mVrms, 2dB/STEP Vsur 8 10 12 dB VIN=100mVrms Output residual noise voltage Volume control range Surround gain (Antiphase) Application Circuit OUT1 OUT2 0.33 µ 0.0022 µ 0.0022 µ 0.1µ 5.6K 0.1µ Surround 23 22 Treble1 fc=8kHz Treble2 fc=8kHz 21 20 19 10µ + 390K 390K 24 5.6K 0.1µ 0.1µ 18 DATA CLOCK LATCH Vcc 10µ + 17 16 15 14 13 Logic Bass 2 Bass 1 f 0 =80Hz f 0 =80Hz Vcc/2 Vcc/2 0dB ~ –87dB –• Vcc/2 Vcc/2 Vcc/2 BD3871FS 50k 1 2 3 + 10µ 4 5 50k 6 50k 7 50k 50k 8 9 50k 10 11 + + + + + + + 10µ 10µ 10µ 10µ 10 µ 10µ 47µ 4.7K 4.7K + 10µ A1 A2 B1 B2 C1 C2 12 UNIT RESISTANCE : Ω CAPACITOR : F Appendix 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. 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. 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. Appendix1-Rev1.0