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Structure
Product Name
:
:
Silicon Monolithic Integrated Circuit
BTL Driver For CD-ROM
Device Name
:
BA5983FM
Features
:
•
•
•
•
•
Driver exclusively for the 4-ch BTL
HSOP-M28 PIN power package
A wide dynamic range [PreVcc=8V, PowVcc=5V, 4V(Typ.) when RL=8Ω]
A built-in thermal shutdown circuit installed.
The power supplies such as PreVcc, PowVcc of CH1 and CH2, and PowVcc of
CH3 and CH4 are supplied independently to achieve an efficient drive.
• The standby mode can be controlled independently in CH1 to 3 and CH4.
• Setting all of CH1-4 to the standby mode leads the entire circuit to the standby
mode.
• The driver pre-stage OP-amp features GND-sense and output rail-to-rail to
make this IC suitable for a low voltage DSP.
{ ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Parameter
Symbol
Power Supply Voltage PREVcc,POWVcc
Power Dissipation
Pd
Output current
IOMAX
Operating
Topr
Temperature Range
Storage Temperature
Tstg
Range
Limits
13.5
2.2 *1
*2
1
Unit
V
W
A
-35 to 85
°C
-55 to 150
°C
*1 When mounted on the glass/epoxy board with the size: 70 mm×70 mm, the thickness: 1.6 mm, and
the rate of copper foil occupancy area: 3% or less.
Over Ta=25°C, derating at the rate of 17.6mW/°C.
*2 The power dissipation should be specified within the ASO range.
{ OPERATING POWER SUPPLY VOLTAGE RANGE
(To determine a power supply voltage, the power dissipation must be taken into consideration.)
PREVcc
POWVcc
4.5 to 13.2(V)
4.5 to PREVcc (V)
This product has not been checked for the strategic materials (or service) defined in the Foreign
Exchange and Foreign Trade Control Low of Japan so that a verification work is required before
exporting it.
Not designed for radiation resistance.
REV. A
2/5
{ ELECTRIC CHARACTERISTICS (Ta=25°C, Vcc=12V, PVcc1=PVcc2=5V, BIAS=2.5V, RL=8Ω, Rd=0.5Ω,
C=100pF, unless otherwise noted.)
Parameter
Quiescent Consumption
Current
CH1, 2, 3 Standby IQST
CH4 Standby IQST
All CHs Standby IQST
<Driver>
Output Offset Voltage
Maximum Output Amplitude
1
Maximum Output Amplitude
2
Voltage Gain 1
Voltage Gain 2
Symbol
MIN.
TYP
MAX.
Unit
IQ
-
20
30
mA
No load applied
IQST1
IQST2
IQST3
-
6.2
16
-
13
26
1
mA
mA
mA
No load applied (IQ of Pre only)
No load applied (IQ of Pre only)
No load applied (IQ of Pre only)
VOOF
-70
0
70
mV
VOM1
3.6
4.0
-
V
CH1,2 VIN=VBIAS ± 1.65V
VOM2
7.5
9
-
V
CH3,4 VIN=VBIAS ± 1.65V *
GVC1
GVC2
10
16
12
18
14
20
dB
dB
Slew Rate
SRDRV
-
2
-
V/µs
CH1,2 VIN=VBIAS ± 0.5V
CH3,4 VIN=VBIAS ± 0.5V *
Input square wave, 100kHz,
2VP¯P
2.0
-
-
0.5
0.7
V
V
V
1.3
-
-
V
0
-6
9
-
0
11
-
9
6
300
0.3
V
mV
nA
V
V
Standby ON Voltage
VSTON
Standby OFF Voltage
VSTOFF
Bias Drop Mute ON Voltage
VBMON
Bias Drop Mute OFF
VBMOFF
Voltage
<Pre-stage Operational Amplifier>
Input Range (buffer in use)
VICM
Input Offset Voltage
VOFOP
Input Bias Current
VBOP
High-level Output Voltage
VOHOP
Low-level Output Voltage
VOLOP
Output Driving Current Sink
ISI
1
-
-
mA
Output Driving Current
Source
ISO
300
500
-
µA
SROP
-
2
-
V/µs
Slew Rate
Condition
VBIAS=6V
VBIAS=6V
VBIAS=6V VCC with 50Ω
attached
VBIAS=6V GND with 50Ω
Input square wave, 100kHz,
2VP¯P
{ OUTLINE DIMENSIONS, SYMBOLS
(MAX 18.85 include BURR)
Product
number
BA5983FM
Lot No.
REV. A
3/5
{ APPLICATION CIRCUIT DIAGRAM
Resistance unit: [Ω]
{ PIN NUMBERS, PIN NAMES
No.
1
Pin Name
BIASIN
Description
Bias amp input terminal
CH1 pre-stage amp non-inverted
input terminal
CH1 pre-stage amp inverted input
terminal
CH1 pre-stage amp output terminal
CH2 pre-stage amp non-inverted
input terminal
CH2 pre-stage amp inverted input
terminal
CH2 pre-stage amp output terminal
No.
15
Pin Name
VO4(+)
Description
Driver CH4 positive output
2
OPIN1(+)
16
VO4(-)
Driver CH4 negative output
3
OPIN1(-)
17
VO3(+)
Driver CH3 positive output
4
OPOUT1
18
VO3(-)
Driver CH3 negative output
5
OPIN2(+)
19
PowVcc2
6
OPIN2(-)
20
STBY2
7
OPOUT2
21
GND
8
GND
GND
22
OPOUT3
9
STBY1
CH1 to 3 standby control terminal
23
OPIN3(-)
10
PowVcc1
PowVcc (CH1,2)
24
OPIN3(+)
11
VO2(-)
Driver CH2 negative output
25
OPOUT4
12
VO2(+)
Driver CH2 positive output
26
OPIN4(-)
13
VO1(-)
Driver CH1 negative output
27
OPIN4(+)
VO1(+)
Driver CH1 positive output
28
PreVcc
14
Note)
PowVcc (CH3, 4)
CH4 standby control terminal
GND
CH3 pre-stage amp output
terminal
CH3 pre-stage amp inverted input
terminal
CH3 pre-stage amp non-inverted
input terminal
CH4 pre-stage amp output
terminal
CH4 pre-stage amp inverted input
terminal
CH4 pre-stage amp non-inverted
input terminal
PreVcc
The positive or negative polarity of driver outputs is determined by the input polarity.
(For example, when the pre-stage OPAMP is used as a buffer, the pin 14 shows a same polarity
output while the pin 13 an opposite polarity output.)
REV. A
4/5
{ CAUTIONS ON USE
(1) When the voltage applied on the Bias terminal (pin 1) has dropped to 0.7V (Typ.) or less, the mute
function will be activated. Under conditions of normal use, it should be set to 1.3V or above.
(2) When the power supply voltage drops to 3.8V (Typ.) or less, the internal circuit will be OFF and, when
recovering to 4.0V (Typ.) or above, the circuit will startup again.
(3) Thermal shutdown (TSD), bias terminal voltage drop or power supply voltage drop will activate the
mute functions for the circuits in all channels, where the output terminals will show the value of the
internal bias voltage (Vcc/2).
(4) Setting the Standby terminal to open or 0.5V or less leads all the circuits in the channel to the standby
mode. Under conditions of normal use, the Standby terminal should be pulled-up to 2V or above.
(5) Setting both two Standby terminals to open or 0.5V or less allows the circuit current to be in the
standby mode. The switched threshold voltage is approximately 1.4V.
(6) Vcc of the pre part must be provided with the same voltage as Vcc of the power part or higher.
(7) The source current of the pre-stage OP-amp is a constant current and the input resistance of the
next-stage driver: 10kΩ is also internally connected as a load.
Careful consideration must be given when determining the external load resistance value of the
OP-amp.
(8) Even though a radiating fin is connected to the GND inside of the package, it must be connected to the
external GND.
(9) About absolute maximum ratings
Exceeding the absolute maximum ratings, such as the applied voltage or the operating temperature
range, may cause permanent device damage. As these cases cannot be limited to the broken short
mode or the open mode, if a special mode where the absolute maximum ratings may be exceeded is
assumed, it is recommended to take mechanical safety measures such as attaching fuses.
(10) About power supply lines
As a measure against the back current regenerated by a counter electromotive force of the motor, a
capacitor to be used as a regenerated-current path can be installed between the power supply and
GND and its capacitance value should be determined after careful check that any problems, for
example, a leak capacitance of the electrolytic capacitor at low temperature, are not found in various
characteristics.
(11) About GND potential
The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states.
(12) About thermal design
With consideration of the power dissipation (Pd) under conditions of actual use, a thermal design
provided with an enough margin should be done.
(13) About operations in a strong electric field
When used in a strong electric field, note that a malfunction may occur.
(14) ASO
When using this IC, the output Tr must be set not to exceed the values specified in the absolute
maximum ratings and ASO.
(15) Thermal shutdown circuit
This IC incorporates a thermal shutdown circuit (TSD circuit). When the chip temperature reaches the
value shown below, the coil output to the motor will be set to open.
The thermal shutdown circuit is designed only to shut off the IC from a thermal runaway and not
intended to protect or guarantee the entire IC functions.
Therefore, users cannot assume that the TSD circuit once activated can be used continuously in the
subsequent operations.
TSD ON Temperature
[°C] (typ.)
175
Hysteresis Temperature
[°C] (typ.)
25
(16) About earth wiring patterns
When a small signal GND and a large current GND are provided, it is recommended that the large
current GND pattern and the small signal GND pattern should be separated and grounded at a single
point of the reference point of the set in order to prevent the voltage of the small signal GND from being
affected by a voltage change caused by the resistance of the pattern wiring and the large current.
Make sure that the GND wiring patterns of the external components will not change, too.
REV. A
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+
(17) This IC is a monolithic IC which has a P isolations and P substrate to isolate elements each other.
This P layer and an N layer in each element form a PN junction to construct various parasitic elements.
Due to the IC structure, the parasitic elements are inevitably created by the potential relationship.
Activation of the parasitic elements can cause interference between circuits and may result in a
malfunction or, consequently, a fatal damage. Therefore, make sure that the IC must not be used
under conditions that may activate the parasitic elements, for example, applying the lower voltage than
the ground level (GND, P substrate) to the input terminals.
In addition, do not apply the voltage to input terminals without applying the power supply voltage to the
IC. Also while applying the power supply voltage, the voltage of each input terminal must not be over
the power supply voltage, or within the guaranteed values in the electric characteristics.
REV. A
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 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 which 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.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
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Appendix1-Rev2.0