ROHM BA5948FP

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.
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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