MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Simplified SRS 3D Sound Processor
OUTLINE
M62455FP is an SRS 3D sound processor
for PC, TV and audio equipment.
This IC has only simplified SRS circuit and
packed in a small 14-pin DIP and SOP.
FEATURES
SRS 3D sound circuit
SRS on/off function switch included
Noise level=25µVrms(When SRS on)
APPLICATION
PC, TV, Mini Stereo, etc
RECOMMENDED OPERATING CONDITION
Supply voltage range 4.5 ~ 12.0V
Rated supply voltage 9V
M62455P/FP
SRS 3D SOUND PROCESSOR
PACKAGE OUTLINE
14Pin DIP
Size:19 mmX6.3mmX2.54mm
14Pin SOP
Size:10.1 mmX5.3mmX1.8mm
SRS,the SRS logo,Sound Retrieval System and
"everything else is only stereo" are registered trademarks
of SRS Labs, Inc.
This device available only to licensees of SRS
Lab,Inc. Licensing and application information
may be obtained from SRS Lab, Inc.
Mitsubishi Electric Corporation assumes no responsibility
for any damage,or infringement of any third-party's rights,
originating in the use of any product data, diagrams, charts
or circuit application examples contained in these
materials.
Note !!
SYSTEM BLOCK DIAGRAM
L
SRS 3D Sound
R
SRS on/off
MITSUBISHI
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1
MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
BLOCK DIAGRAM
RP
Lout
8
910
REF
M62455P/FP
SRS 3D SOUND PROCESSOR
7
LP
6
REF IN
LN
Rout
F2
RN
F3
11
12
13
14
SRS 3D SOUND
5
GND
4
Lin
3
Rin
2
Vcc
SRS
1
ON/OFF
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MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Conditions Ratings Unit
Vcc Supply Voltage 13.0 V
Pd Power Dissipation
K Thermal Derating
Topr Operating Temperature
Ta>25
M62455P/FP
SRS 3D SOUND PROCESSOR
500
5
-20 ~ 75
mWTa<25
mW/ C
C
Storage Temperature -40 ~ 125Tstg
Thermal Derating
500
400
300
200
100
Power Dissipation Pd [ mW ]
C
25 50 75 100
125 150
AMBIENT TEMPERATURE Ta [ C ]
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MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
RECOMMENDED OPERATING CONDITION
Symbol Parameter Conditions Unit
Vcc Supply Voltage V
VIH
VIL
ELECTRICAL CHARACTERISTICS
(1) Power Supply Characteristics
Symbol Parameter Conditions Unit
High Level
Input Voltage
Low Level
Input Voltage
Pin-1
(SRS on)
Pin-1
(SRS off)
Min.
M62455P/FP
SRS 3D SOUND PROCESSOR
Min.
4.5
2.1
Typ. Max.
9.0 12.0
0
Typ. Max.
VDD
0.8
V
V
Icc Circuit Current mA
(2) -1 Input / Output Characteristics (Vcc=9V, Ta=25°C, Vi=500mVrms)
Symbol
Gv1
Gv2
Gv3
Gv4
VOM
THD
Parameter
Input - Output
Voltage Gain1
Input - Output
Voltage Gain2
Input - Output
Voltage Gain3
Input - Output
Voltage Gain4
Maximum
Output Voltage
Total
Harmonic
Distortion
Conditions
Input Output
f=1kHz RL=10KΩ
f=1kHz
f=100Hz
f=10KHz RL=10KΩ
f=1kHz
f=1kHz
Vi=-10dBv
RL=10KΩ SRS on
RL=10KΩ SRS on
THD=1%
IHF-A filter
RL=10KΩ
DIN-A filter
RL=10KΩ
Conditions
SRS off
SRS on
SRS on/off
SRS off
10 20
Min.
4.0
8.0
7.0
Limit
Typ. Max.
0-3
7.0
11.0
10.0
2.21.8
+3 dB
10.0 dB
14.0 dB
13.0 dB
Unit
Vrms
%0.01 0.05
VNO1
VNO1
Output Noise
Voltage1
Output Noise
Voltage2
IHF-A filter
IHF-A filter
MITSUBISHI
ELECTRIC
SRS off
SRS on
5 10
25 60
( / )
µVrms
µVrms
124
MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
APPLICATION EXAMPLE
470p 2.2µ
0.82µ
14
13
0.01µ
12
Rout
10k
2.2µ
470p
Lout
10k
91011
M62455P/FP
SRS 3D SOUND PROCESSOR
8
SRS on/off
21
Vcc
SRS 3D SOUND
3 4
GND
2.2µ2.2µ 22µ
Rin
Lin
REF
65
0.018µ
8.66k
7
Unit R:Ω
C: F
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5
MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Keep safety first in your circuit designs !
Mitsubishi Electric Corporation puts the maximum effort into making
semiconductor products better and more reliable, but there is always the
possibility that trouble may occur with them.Trouble with semiconductors
may lead to personal injury, fire or property damage. Remember to give due
consideration to safety when making your circuit designs, in order to
prevent fires from spreading, redundancy, malfunction or other mishap.
M62455P/FP
SRS 3D SOUND PROCESSOR
Notes regarding these materials
These materials are intended as a reference to assist our customers in the
selection of the Mitsubishi semiconductor product best suited to the
customer's application; they do not convey any license under any
intellectual property rights, or any other rights, belonging to Mitsubishi
Electric Corporation or a third party.
Mitsubishi Electric Corporation assumes no responsibility for any damage,
or infringement of any third-party's rights, originating in the use of any
product data, diagrams, charts or circuit application examples contained in
these materials.
If these products or technologies are subject to the Japanese export
control restrictions, they must be exported under a license from the
Japanese government and cannot be imported into a country other than
the approved destination.
Any diversion or reexport contrary to the export control laws and
regulations of Japan and/or the country of destination is prohibited.
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MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
M62455P/FP
Width Volume as a Function of Add External R.
100
90
80
70
M62455P/FP
SRS 3D SOUND PROCESSOR
60
50
40
30
20
10
SRS effect : Width Volume setting [%]
0
0 20 40 60 80 100 120 140 160
width vol setting
Add External R Value
(Between Pin 9/11 and Pin 10/13) [kΩ]
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MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Voltage Gain-Frequency
Ta=25°C,Vcc=9V,RL=10kΩ,SRS-OFF
40
30
20
10
0
M62455P/FP
SRS 3D SOUND PROCESSOR
M62455P/FP
-10
-20
-30
-40
-50
Voltage Gain[dB]
-60
-70
-80
-90
-100
Lin Lout
Lin Rout
-110
0.01 0.1 1 10 100
Frequency[kHz]
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MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Ta=25°C,BW=400 to 30kHz,RL=10kΩ
10
M62455P/FP
SRS 3D SOUND PROCESSOR
M62455P/FP
Vo-Vi
1
Vcc=12V
Vcc=9V
0.1
Vcc=8V
Vcc=5V
Maximum Output Voltage:Vomax[Vrms]
0.01
0.01 0.1 1 10
Intput Voltage:Vi[Vrms]
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9
MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Ta=25°C,THD=1%(BW=400 to 30kHZ)
10
M62455P/FP
SRS 3D SOUND PROCESSOR
M62455P/FP
Vomax-RL
1
Vcc=12V
Vcc=9V
0.1
Vcc=8V
Vcc=5V
Maximum Output Voltage:Vomax[Vrms]
0.01
0.1 1 10 100
Load Resistance:RL[k ]
MITSUBISHI
ELECTRIC
Ω
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10
12
MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Ta=25°C,Vcc=9V,BW=400 to 30kHz,RL=10kΩ,SRS-OFF
10
1
M62455P/FP
SRS 3D SOUND PROCESSOR
M62455P/FP
THD-Vo
0.1
0.01
Total Harmonic Distortion[%]
0.001
0.0001
0.1 1 10
Output Voltage[Vrms]
MITSUBISHI
ELECTRIC
M62455P/FP
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MITSUBISHI SOUND PROCESSOR
PRELIMINARY
Notice ; This is not a final specification.
some parametric limits are subject to change.
Ta=25°C,Vcc=9V,Vi=0mVrms(Rg=0Ω),JIS-A filter
20
18
16
µ
14
M62455P/FP
SRS 3D SOUND PROCESSOR
M62455P/FP
No-Vcc
12
10
8
6
Output Noise Voltage:No[ Vrms]
4
2
0
4 5 6 7 8 9 10 11 12 13
SRS-OFF
SRS-ON
Supply Voltage:Vcc[V]
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