Datasheet NJM2188V, NJM2188D, NJM2188M Datasheet (JRC)

NJM2188

t r

PRELIMINARY

Passive Matrix TruSurr oundTM 3D Audio Processor

■■■■

GENERAL DESCRIPTION

The NJM2188 is a Passive Matrix TruSurround audio processor. It regenerates the full surround sound field directly from any kinds of surround enc oded stereo input(Lt/Rt) signals.

After the internal passive matrix circuit decodes Lt/R signal into 4 channel s ignals, the TruSurrou nd virtualize encodes them into 2 channel surround signals again.

Accordingly any pre-processors decoding into 4 channel signals are not required.

The NJM2188 also includes the SRS 3D-STEREO, and regenerates a 3D sound field from normal L/R input.

The NJM2188 is suitab le for TV, mini component, C D radio cassette, multimedia speaker system ,and others.

TM

■■■■

FEATURES

●●●●Operating Voltage (4.7 to 13V)

●●●●Maximum Input Voltage (1.5Vrms typ. at V

●●●●Low Output Noise (32

●●●●SRS 3D-STEREO FUNCTION (Two-grade Switch for 3D Effect)

●●●●BYPASS FUNCTION (THROUGH)

●●●●Bipolar Technology

●●●●Package Outline DIP16, DMP16, SSOP16

Vrms typ. at TRU mode)

µ

The TruSurround technology right incorporated in the NJM2188 are owned by SRS Labs, a U.S. Corporation and licensed to New Japan Radio Co., Ltd. SRS is protected under U.S. and foreign patents issued and/or pending. TruSurround and the , are trademarks of SRS Labs, Inc. in the United States and s elected foreign countries. Neither the purchase of the NJM2188, nor the corresponding sale of audio enhancement equipment conveys the right to sell commerciali zed recordings m ade with any TruSurround technology. SRS Labs requires that all users of the NJM2188 must enter into a license agreement directly with SRS Labs if the royalty is not included in the purchase price. SRS Labs also requires any users to comply with all rules and regulations as outlined in the SRS Trademark Usage Manual.

For further information, pl ease contact:

SRS Labs ., Inc. 2909 Daimler Street. Santa Ana, CA 92705 USA Tel:949-442-1070 Fax:949-852-1099 http://www.srslabs.com

3D

+

≥11V)

■■■■PACKAGE

NJM2188D NJM2188M

NJM2188V

- 1 -A

NJM2188

■■■■BLOCK DIAGRAM

Lch in

■■■■

50K

VREF

Rch in

50K

VREF

PIN CONFIGRATION

MODE 1

MODE 2

VREF

FIL2_OUT

FIL2_IN

FIL2_IN2

GND

1

2

+

V

3

4

5

6

7

8

SW1 SW2 SW3 SW4

SW Control

MODE1

MODE2

NJM2188

FIL1_OUT FIL1_IN2 FIL1_IN1

15K

1K

3.9K VREF

VREF

20K

6.18K

VREF

50K

FIL2_OUT

16

15

14

13

12

11

10

9

FIL1_IN3

51K

20K 150K 11K

5K

TRU

45K

SRS 3D1

VREF

SRS 3D-2

50K

VREF

Lch in Rch in

FIL1_OUT

FIL1_IN1

FIL1_IN2 FIL1_IN3

Lch out

Rch out

FIL2_IN

SW4

BYPASS

TRU

(SRS 3D)

BYPASS

TRU

(SRS 3D)

50K

SW1

Lch out

SW2

V+

VREF

Rch out

V+

VREF

GND

TRU

SW3

MIX

SRS 3D-1 SRS 3D-2

12.5K

37.5K

VREF

FIL2_IN2

No. Symbol Function

1 MODE1 Mode Switch 2 MODE2 Mode Switch 3 V+ Supply Voltage 4.5V to 13V 4 V 5 FIL2_OUT Perspective Network_2 output 6 FIL2_IN Perspective Network_2 input 7 FIL2_IN2 Perspective Network_2 input2 8 GND Ground

9 R 10 L 11 FIL1_IN3 Perspective Network_1 INPUT3 12 FIL1_IN2 Perspective Network_1 INP UT2 13 FIL1_IN1 Perspective Network_1 INP UT1

14 FIL1_OUT 15 R

16 L

REF

V

ch OUT

R

ch OUT

L

ch IN

R

ch IN

L

+

/2 OUTPUT

ch

OUTPUT

ch

OUTPUT

Perspective Network_1

OUTPUT

ch

INPUT

ch

INPUT

- 2 -

■■■■ABSOLUTE MAXIMUM RATING (Ta=25°°°°C)

PARAMETER SYMBOL RATING UNIT

Supply Voltage V+ 15 V

Power Dissipation

Operating Temperature Range T Storage Temperature Range T

■■■■

ELECTRICAL CHARACTERISTICS(V

PARAMETER SYMBOL

Operating Voltage

Supply Current

+

V

- - - - 4.7 12.0 13.0 V

I

No Signal

cc

IN L R

P

D

opr stg

+

=12V,Ta=25°°°°C)

(DIP16) 500 (DMP16) 300 (SSOP16) 300

-40 to +85

-40 to +125

CONDITION

0 0 - BYPASS 0 0 - TRU 0 0 - SRS 3D-1

OUT MODE

mW

°C °C

MIN TYP MAX UNIT

- 9.0 13.5 mA

NJM2188

Reference Voltage

Maximum Input Voltage

V

V+/2 - - - - 5.5 6.0 6.5 V

REF

V

INMAX

f=1kHz THD=3%

f=125Hz THD=3%

VIN 0 L

0 V

VIN 0 L

VIN 0 R

V

IN

VIN 0 L

VIN 0 R

V

IN

VIN 0 L

VIN 0 R

V

IN

R

IN

VIN L

BYPASS

TRU

SRS3D-1

SRS3D-2

11.0

(3.55)

4.5

(1.67)

7.3

(2.32)

3.9

(1.57)

7.5

(2.37)

7.3

(2.32)

4.0

(1.58)

7.5

(2.37)

7.5

(2.37)

4.5

(1.68)

12.0

(3.98)

6.5

(2.11)

9.3

(2.92)

5.9

(1.97)

9.5

(3.0)

9.3

(2.92)

6.0

(2.0)

9.5

(3.0)

9.5

(3.0)

6.5

(2.11)

-

dBV

(Vrms)

- 3 -

NJM2188

■■■■ELECTRICAL CHARACTERISTICS(V

PARAMETER SYMBOL

+

=12V,Ta=25°°°°C)

CONDITION IN L R

OUT MODE

MIN TYP MAX UNIT

Output Noise

Total Harmonic Distortion

Bypass Gain

V

THD

G

Bypass2

NOISE

f=1kz

A- Weighting Rg=0Ω

f=1kHz V

=-10dB

IN

0 0 L

BYPASS -

0 0 R 0 0 L

TRU -

0 0 R

0 0 L

SRS3D-1 -

0 0 R

-110

(3.16)

-90

(31.6)

-90

(31.6)

-100

(10.0)

-84

(63.1)

-84

(63.1)

VIN 0 L - 0.01 -

BYPASS

0 VIN R

- 0.01 -

VIN 0 L - 0.10 -

TRU

VIN 0 R

- 0.20 -

VIN 0 L - 0.10 -

SRS3D-1

0 R

V

IN

- 0.20 -

VIN 0 L -1.0 0.0 1.0

BYPASS

0 VIN R

-1.0 0.0 1.0

dBV

(µVrms)

%

dB

Passive Gain

SRS 3D Gain G

MODE Select Control Voltage

G

f=1kHz VIN 0 L 0.2 2.2 4.2

Lt/Rt-L

TRU

G

f=1kHz VIN 0 R

Lt/Rt-R

-14.0 -12.0 -10.0

VIN 0 L -4.8 -2.8 -0.8

SRS3D

f=1kHz

VIN 0 R -15.1 -13.1 -11.1

0 V

L

IN

SRS3D-1

-15.1 -13.1 -11.1

VIN 0 L -5.8 -3.8 -1.8

f=1kHz

VIN 0 R -21.1 -19.1 -17.1

0 V

L

IN

SRS3D-2

-21.1 -19.1 -17.1

VIN=High Level - - - - 2.0 - V+

V

MODE

VIN=Low Level - - - - 0.0 - 0.7

dB

V

- 4 -

■■■■MODESELECT SWITCH

t

V

MODE MODE1 MODE2 NOTE

BYPASS L L INPUT THROUGH MODE

TRU L H Passive Matrix TruSurround

NJM2188

SRS 3D-1 H L

SRS 3D-2 H H

SRS 3D STEREO MODE Space 100% Center 90%

SRS 3D STEREO MODE Space 90% Center 70%

■■■■APPLICATION CIRCUIT

VREF

Lch in

Rch in

10uF/50V

C10

C11

10uF/50V

0.01uF C1

C2

0.22uF

C3

0.0047uF

C4

0.22uF

Lch in

Rch in

FIL1_IN1

FIL1_OUT

FIL1_IN3

FIL1_IN2

12

100uF/25V

C13

V+

GND

MODE1 MODE2

H

GND

L H L

R16

10K

R17 10K

C14

10uF/50V

C15

GND

NJM2188

V+ VREF

C12

100uF /25V

VREF

GND

10uF/50V

GND

0.01uF

1.8K

FIL2_IN

FIL2_OUT

56K

R9

C5

0.0047uF

R11

51K

C6

1.5K R14

VREF

VREF VREF

PARTS NO. VALUE Tolerance PARTS NO. VALUE Tolerance

C1,C6 0.01µF C2,C4 0.22µF

C3,C5,C7 0.0047µF

±5% ±5% ±5%

R12 56k R13 33k R14 1.5k

C8,C9,C10,C11 10µF R15 75k

C14,C15 10µF R16,R17 10k C12,C13 100µF

R9 1.8k

R10 2M

R11 51k

±5% ±5% ±5%

Lch out

Rch out

Lch ou

C8

10uF/50V

C9

10uF/50V

Rch ou

GND

FIL2_IN2

R12

GND

R10

2M

R13 33K

R15 75K

C7

0.0047uF

±5% ±5% ±5%

±5% ±5%

- 5 -

NJM2188

■■■■TYPICAL CHARACTERISTICS

Vout

(dBV)

Vout

(dBV)

FREQUENCY RESPONS E

+5

+0

-10

-15

-20

-25

-30 20

50 100 200

a: Vin = 0dBV Lch ⇒ Vout = Lch b: Vin = 0dBV Rch ⇒ Vout = Rch

+

V

=12V, 0dB V = 1Vrms

FREQUENCY RESPONS E

+10

+5

+0

-5

-10

-15

-20

-25

BYPASS MODE

500 1k 2k

f(Hz)

SRS 3D-1 MODE

b, d

a, c

FREQUENCY RESPONSE

TRU(Lt/Rt) MODE

+10

+5

+0

Vout

(dBV)

-5

-10

-15

-20

-25

-30 20

50 100 200

500 1k 2k

a, c

b, d

5k 10k

20k

a, b

5k 10k

20k

f(Hz)

a: Vin = 0dBV Lch ⇒ Vout = Lch b: Vin = 0dBV Lch ⇒ Vout = Rch c: Vin = 0dBV Rch ⇒ Vout = Rch d: Vin = 0dBV Rch ⇒ Vout = Lch

+

=12V, 0dBV = 1Vrms

V

FREQUENCY RESPONSE

SRS 3D-2 MODE

+10

+5

+0

-5

Vout

(dBV)

-10

-15

-20

-25

a, c

b, d

- 6 -

-30 20

50 100 200 500 1k 2k

a: Vin = 0dBV Lch ⇒ Vout = Lch b: Vin = 0dBV Lch ⇒ Vout = Rch c: Vin = 0dBV Rch ⇒ Vout = Rch d: Vin = 0dBV Rch ⇒ Vout = Lch

+

V

=12V, 0dBV = 1Vrms

f(Hz)

-30

5k 10k

20k

20

50 100 200 500 1k 2k

5k 10k

20k

f(Hz)

a: Vin = 0dBV Lch ⇒ Vout = Lch b: Vin = 0dBV Lch ⇒ Vout = Rch c: Vin = 0dBV Rch ⇒ Vout = Rch d: Vin = 0dBV Rch ⇒ Vout = Lch

+

=12V, 0dBV = 1Vrms

V

THD(

THD(%)

%)

0.05

0.02

0.01

TOTAL HARMONIC DISTORTION vs. INPUT VOLTAGE

5 2

1

0.5

0.2

0.1

0.05

0.02

0.01

0.005

0.002

0.001

0.0005

0.0002

0.0001

-30

-25 -20 -15 -10 -5 +0 +5 +10

a: Vin = 1kHz Lch ⇒ Vout = Lch b: Vin = 1kHz Lch ⇒ Vout = Rch

+

=12V

V

TOTAL HARMONIC DISTORTION vs. INPUT VOLTAGE

10

5

2

1

0.5

0.2

0.1

BYPASS MODE

a, b

INPUT LEVEL(dBV)

SRS 3D-1 MODE

a

b

-30

-25 -20 -15 -10 -5 +0 +5 +10

a: Vin = 1kHz Lch ⇒ Vout = Lch b: Vin = 1kHz Lch ⇒ Vout = Rch

+

=12V

V

INPUT LEVEL(dBV)

NJM2188

TOTAL HARMONIC DISTORTION vs. INPUT VOLTAGE

10

5

2

1

0.5

THD(%)

0.2

0.1

0.05

0.02

0.01

+15

THD(%)

+15

-30

-25 -20 -15 -10 -5 +0 +5 +10

a: Vin = 1kHz Lch ⇒ Vout = Lch b: Vin = 1kHz Lch ⇒ Vout = Rch

+

=12V

V

TOTAL HARMONIC DISTORTION vs. INPUT VOLTAGE

10

5

2

1

0.5

0.2

0.1

0.05

0.02

0.01

-30

-25 -20 -15 -10 -5 +0 +5 +10

a: Vin = 1kHz Lch ⇒ Vout = Lch b: Vin = 1kHz Lch ⇒ Vout = Rch

+

V

=12V

a

TRU MODE

a

b

INPUT LEVEL(dBV)

SRS 3D-2 MODE

b

INPUT LEVEL(dBV)

[CAUTION]

The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.

+15

- 7 -