Datasheet M62438FP Datasheet (Mitsubishi)

Simplified SRS 3D Sound Processor

OUTLINE

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

M62438FP is an SRS 3D sound processor
for PC, TV and audio equipment.
This IC has only simplified SRS circuit and
packed in a small 10-pin SOP.

FEATURES

• SRS 3D sound circuit

• SRS on/off function switch included

APPLICATION

• PC, TV, Mini Stereo, etc

RECOMMENDED OPERATING CONDITION

• Supply voltage range 4.5 to 12.0V

• Rated supply voltage 9V

PACKAGE OUTLINE

10Pin SOP

Note !!

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.

SYSTEM BLOCK DIAGRAM

L

SRS 3D Sound

R

on/off

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1

BLOCK DIAGRAM

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

GND

CNTL

OUT L

IN L

REF IN

6

7

8

9

10

REF

SRS 3D SOUND

5

OUT R

FILTER

4

DIFF

3

IN R

1 2

Vcc

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2

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Conditions Ratings Unit

Vcc Supply Voltage 13.0 V

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

Pd Power Dissipation 400

K

Topr Operating Temperature

Thermal Derating 4

Ta>25

-20 to 75

Thermal Derating

500

400

300

mWTa<25

mW/°C

°C

°CStorage Temperature -40 to 125Tstg

200

100

Power Dissipation Pd [ mW ]

25 50 75 100

AMBIENT TEMPERATURE Ta [ °C ]

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125 150

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3

RECOMMENDED OPERATING CONDITION

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

Symbol Parameter Conditions

Vcc Supply Voltage V

VIH

VIL

ELECTRICAL CHARACTERISTICS

(1) Power Supply Characteristics

Symbol Parameter Conditions Unit

Icc Circuit Current mA

(2) -1 Input / Output Characteristics (Vcc=9V, Ta=25°C, Vi=500mVrms)

Symbol

Gv1

Parameter

Input - Output
Voltage Gain1

High Level
Input Voltage

Low Level
Input Voltage

Conditions

Input Output

f=1kHz RL=10KΩ

Pin-7

(SRS on)

Pin-7

(SRS off)

SRS off

Min. Typ. Max.

4.5 9.0 12.0

2.1

0

Min.

Conditions

Typ. Max.

15 30

VDD

Min.

0.8

Limit

Typ. Max.

0-3

Unit

V

V

Unit

+3 dB

Gv2

Gv3

Gv4

VOM

THD

VNO1

VNO2

Input - Output
Voltage Gain2

Input - Output
Voltage Gain3

Input - Output
Voltage Gain4

Maximum
Output Voltage

Total
Harmonic
Distortion

Output Noise
Voltage1

Output Noise
Voltage2

f=1kHz RL=10KΩ

f=100Hz RL=10KΩ

f=10KHz RL=10KΩ

THD=1%

f=1kHz

f=1kHz

Vi=-10dBv

IHF-A filter

RL=10KΩ

DIN-A filter

RL=10KΩ

IHF-A filter

IHF-A filter

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ELECTRIC

SRS on

SRS on

SRS on

SRS on/off

SRS off

SRS off

SRS on

+6.5+3.5 +9.5

+12.5+9.5 +15.5

+10+7 +13

2.21.8

5 10

50 100

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dB

dB

dB

Vrms

%0.01 0.05

µVrms

µVrms

124

APPLICATION EXAMPLE

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

IN L

22µF

10

REF

SRS on/off

2.2µ

2.2µ

789

SRS 3D SOUND

OUT L

GND

6

IN R

1 2

VCC

1K

2.2µ

4.7K

100K

0.0047µ

0.47µ

1.5K

47K

3.6K

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ELECTRIC

31.6K

0.47µ

5

2.2µ

OUT R

43

Unit R:Ω
C: F

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125

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

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.

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

SRS 3D SOUND PROCESSOR

M62438FP

Space Volume as a Function of Add External R.

100

90

80

M62438FP

70

Space vol setting

60

50

40

30

SRS effect : Space Volume setting [%]

20

10

0

0 20 40 60 80 100

Add External R Value
(Between Pin 4 and 31.6 kΩ) [kΩ]

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7

40
30
20

10

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

M62438FP

Voltage Gain—Frequency

Ta=25°C,Vcc=9V,RL=10KΩ,SRS–OFF

0

-10

-20

-30

-40

-50

-60

Voltage Gain [dB]

-70

-80

-90

-100

-110

-120

0.01 0.1 1 10 100

Lin—>Lout
Lin—>Rout

Frequency [KHz]

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8

10

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

M62438FP

Vo – Vi

Ta=25°C,BW=400 to 30KHz,RL=10KΩ

1

Vo [Vrms]

0.1

Output Voltage :

0.01

0.01 0.1 1 10

Vcc=12V
Vcc=9V
Vcc=8V
Vcc=5V

Input Voltage : Vi [Vrms]

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9

10

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

M62438FP
Vomax–RL

Ta=25°C,THD=1%(BW=400 to 30KHz)

1

0.1

Maximum Output Voltage : Vomax [Vrms]

0.01

0.1 1 10 100

Vcc=12V
Vcc=9V
Vcc=8V
Vcc=5V

Load Resistance : RL [KΩ]

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MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

M62438FP

THD—Vo

Ta=25°C,Vcc=9V,BW=400 to 30KHz,RL=10KΩ,SRS–OFF

10

1

0.1

0.01

Total Harmonic Distortion : THD [%]

0.001

0.01 0.1 1 10

Output Voltage [Vrms]

M62438FP

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12

70

60

MITSUBISHI SOUND PROCESSOR

M62438FP

SRS 3D SOUND PROCESSOR

M62438FP

No – Vcc

Ta=25°C,Vcc=9V,Vi=0mVrms(Rg=0Ω),JIS-A filter

50

40

30

20

Output Noise Voltage : No [uVrms]

10

SRS-OFF
SRS-ON

0

4 5 6 7 8 9 10 11 12 13

Supply Voltage : Vcc [V]

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