BA5948FP Optical Discs 4-channel BTL driver for CD players BA5948FP BA5948FP is a 4-channel BTL driver for CD players. The adoption of HSOP28 package enables to make sets smaller. This IC incorporates thermal shutdown circuit and mute function with two mute pins. Gain can be controlled by external resistor in driver block. !Applications CD players !External dimensions (Unit : mm) 18.5 ± 0.2 !Features 1) 4-channel BTL driver 2) Set space saving by adoption of HSOP28 3) Built-in thermal shutdown circuit 4) Gain control by external resistor 15 0.5 ± 0.2 7.5 ± 0.2 9.9 ± 0.3 28 0.11 2.2 ± 0.1 1 5.15 ± 0.1 0.8 0.35 ± 0.1 0.08 M 14 0.25 ± 0.1 0.1 S 16.0 ± 0.2 HSOP28 !Absolute maximum ratings (Ta=25°C) Parameter Supply voltage Symbol Limits Vcc, PVcc1, PVcc2 18 Power dissipation Pd Unit V 1700 ∗ mW Operating temperature range Topr −35 to +85 C Storage temperature range Tstg −55 to +150 C ∗ Derating : 13.6mW/ C for operation above Ta=25 C. !Recommended Operating Conditions (Ta=25°C) Parameter Supply voltage Symbol Min. Typ. Max. Unit Vcc, PVcc1, PVcc2 4.5 8 14 V 1/2 BA5948FP Optical Discs !Electrical characteristics (Unless otherwise noted : Ta=25°C、VCC=8V, BIAS=2.5V, RL=8Ω, Rin=10kΩ) Symbol Parameter Current consumption at no signal ICC Min. − Typ. Max. Unit 7.5 15 mA mV VOO1 −50 − 50 Maximum output amplitude VOM1 5.1 5.6 6.1 V Close loop gain GVC1 12.5 15.0 17.5 dB mV CH1 output offset voltage VOO2 −50 − 50 Maximum output amplitude VOM2 4.0 4.6 5.1 V Close loop gain GVC2 12.5 15.0 17.5 dB CH 2,3,4 output offset voltage Mute OFF voltage VMTOFF − − 0.5 V Mute ON voltage VMTON 2.0 − − V Conditions No load !Application Circuit BIAS 10k 0.1µF Vcc=8V FOCUS 10k FOCUS COIL 47µF TRACKING 28 27 26 25 24 23 22 21 N.C. N.C. N.C. N.C. 20 19 17 16 CH4 Vcc 30k 15 CH3 PVcc2 Level Shift 30k SERVO PRE AMP 18 TRACKING COIL Level Shift T.S.D. Level Shift Level Shift 30k 15k BA5948FP 10k 10k CH2 MUTE 1 10k SPINDLE 10k TRAVERSE 2 MUTE ON-HIGH OFF-LOW CH1 MUTE 3 PVcc1 N.C. N.C. N.C. N.C. 5 6 7 8 4 MUTE ON-HIGH OFF-LOW 10k 9 10 CH1 11 CH2 10k 12 M TRAVERSE MOTOR 13 14 M SPINDLE MOTOR 2/2 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