Audio ICs Pre-power amplifier for headphone stereos BA3612AKV The BA3612AKV is configured of a pre-amplifier and a headphone amplifier, and contains internal AMS, B.B, AVLS, and BEEP amplifier functions. Also, this IC can be used in combination with the BA3641FV to enable configuration of recording and playback sets. Applications Portable cassette players Features 1) Low current consumption. 2) Internal AMS function. 3) Internal B.B function. 4) Internal AVLS function. 5) Internal BEEP amplifier. 6) Supports Dolby-B. 7) Supports OCL output. Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 355 Audio ICs Block diagram 356 BA3612AKV Audio ICs BA3612AKV Pin descriptions (The pin voltage of VCC = 2.3V, B = 1.3V is the standard value for the measurement circuit under quiescent conditions. Modes: PWR-ON, TC, FWD, NOR, Mute-OFF, B.B-OFF, AVLS-OFF) 357 Audio ICs 358 BA3612AKV Audio ICs BA3612AKV 359 Audio ICs 360 BA3612AKV Audio ICs BA3612AKV 361 Audio ICs 362 BA3612AKV Audio ICs BA3612AKV Electrical characteristics (unless otherwise noted, B = 1.3V, VCC = 2.3V, f = 1kHz, PreOutRL = 5k, PWROutRL = 16 (OCL), Ta = 25C, and measurement condition pertaining to ripple: VCC and B are common-mode input) 363 Audio ICs BA3612AKV (unless otherwise noted, B = 1.3V, VCC = 2.3V, f = 1kHz, PreOutRL = 5k, PWROutRL = 16 (OCL), Ta = 25C, and measurement condition pertaining to ripple: VCC and B are common-mode input) 364 Audio ICs BA3612AKV (unless otherwise noted, B = 1.3V, VCC = 2.3V, f = 1kHz, PreOutRL = 5k(OCL), PWROutRL = 16 (OCL), Ta = 25C) 365 Audio ICs BA3612AKV Conditions applied to control pins (Unless otherwise noted, B = 0.9V, VCC = 1.7V, f = 1kHz, PreOutRL = 5k ,PWROutRL = 16 (OCL), Ta = 25C) 366 Audio ICs BA3612AKV Measurement circuit 367 Audio ICs Electrical characteristic curves External dimensions (Units: mm) 368 BA3612AKV 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