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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 !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
!External dimensions (Unit : mm)
18.5 0.2
28 15
9.9 0.3
7.5 0.2
1
5.15 0.1
14
2.2 0.1
0.11
0.8 0.35 0.1 0.08 M 16.0 0.2
0.1 S
HSOP28
!Absolute maximum ratings (Ta=25C)
Parameter Supply voltage Power dissipation Operating temperature range Storage temperature range Symbol
Vcc, PVcc1, PVcc2
Limits 18 1700 -35 to +85 -55 to +150
Unit V mW C C
Pd Topr Tstg
Derating : 13.6mW/ C for operation above Ta=25 C.
!Recommended Operating Conditions (Ta=25C)
Parameter Supply voltage Symbol
Vcc, PVcc1, PVcc2
Min. 4.5
Typ. 8
Max. 14
Unit V
0.5 0.2
0.25 0.1
1/2
BA5948FP
Optical Discs
!Electrical characteristics (Unless otherwise noted : Ta=25CVCC=8V, BIAS=2.5V, RL=8, Rin=10k)
Parameter Current consumption at no signal CH1 output offset voltage Maximum output amplitude Close loop gain CH 2,3,4 output offset voltage Maximum output amplitude Close loop gain Mute OFF voltage Mute ON voltage Symbol ICC VOO1 VOM1 GVC1 VOO2 VOM2 GVC2 VMTOFF VMTON Min. - -50 5.1 12.5 -50 4.0 12.5 - 2.0 Typ. 7.5 - 5.6 15.0 - 4.6 15.0 - - Max. 15 50 6.1 17.5 50 5.1 17.5 0.5 - Unit mA mV V dB mV V dB V V Conditions No load
!Application Circuit
BIAS
10k
FOCUS
10k
0.1F Vcc=8V 47F
28 27 26 25 24 23 22 21 20 19 FOCUS COIL TRACKING COIL
TRACKING
18
CH4
17
16
15
CH3
N.C. Vcc 30k
N.C.
N.C.
N.C. PVcc2
30k
Level Shift Level Shift Level Shift
SERVO PRE AMP
T.S.D.
30k 15k
BA5948FP 10k
Level Shift
10k
CH2 MUTE
1 10k 2 MUTE ON-HIGH OFF-LOW 3
CH1 MUTE
4
PVcc1
N.C.
5
N.C.
6
N.C.
7
N.C.
8 9
10k
CH1
10k
CH2
10
11
12
13
14
SPINDLE
10k
MUTE ON-HIGH OFF-LOW
M TRAVERSE MOTOR
M SPINDLE MOTOR
TRAVERSE
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

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