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Audio ICs
Audio sound controller
BH3864F
The BH3864F has been developed for use in mini-component stereo systems. Switching is done using a resistor ladder to suppress DC offset at switching. Two-line serial control is available, and external three-line serial control is also possible. The package is a compact 24-pin SOP. FApplications Mini-and micro-component stereo systems, CD radio cassette players and TVs. FFeatures 1) Volume, tone, and dynamic bass boost control possible by a serial link to a microprocessor. 2) Left and right channel volume can be controlled independently. FAbsolute maximum ratings (Ta = 25_C)
3) Resistor-ladder type volume control uses BiCMOS process for low distortion and noise. 4) Dynamic bass and linked ALC are provided on chip.
FRecommended operating conditions (Ta = 25_C)
534
Audio ICs
FBlock diagram
BH3864F
535
Audio ICs
FPin descriptions
BH3864F
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 9V, f = 1kHz, Rg = 600, RL = 10k, FBW = 20Hz to 20kHz, VIN = 200mVrms, volume = 0dB, tone = 0dB, dynamic bass = 0dB, and gain select = 14dB)
536
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

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