NJM2198
- 1 -
SRS 3D SURROUND AUDIO PROCESSOR
The SRS technology right incorporated in the NJM2198 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. SRS and the
, are trademarks of SRS
Labs, Inc. in the United States and selected foreign countries. Neither the purchase of the NJM2198, nor the corresponding sale of
audio enhancement equipment conveys the right to sell commercialized recordings made with any SRS technology.
SRS Labs requires that all users of the NJM2198 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, please contact:
SRS Labs, Inc.
2909 Daimler Street. Santa Ana, CA 92705 USA
Tel:714-442-1070 Fax:714-852-1099 http://www.srslabs.com
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GENERAL DESCRIPTION
The NJM2198 is a SRS 3D surround audio
processor regenerating the 3D surround sound with
only two speakers.
It regenerates 3D surround sound from both of
monaural and stereo input.
The features of wide operating voltage range, wide
dynamic range, low output noise are suitable for any
audio applications.
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PACKAGE OUTLINE
NJM2198L
NJM2198M
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FEATURES
q
Operating Voltage
(4.7 to 13V)
q
Low Supply Current
(7.8mA typ. at 3D Stereo mode)
q
Low Output Noise
(32Vrms typ. at 3D Stereo mode)
q
BYPASS Gain
(0dB typ.)
q
BYPASS FUNCTION
(Through)
q
WIDTH control
q
Internal Mode Control Switch
(2bit)
q
Bipolar Technology
q
Package Outline
SDIP22,DMP24
P R E L I M I N A R Y
NJM2198
- 2 -
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ABSOLUTE MAXIMUM RATING (Ta=25
C)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V
+
15
V
Power Dissipation
P
D
(SDIP22) 700
(SDMP24) 700
mW
Operating Temperature Range
T
opr
-40 to +85
C
Storage Temperature Range
T
stg
-40 to +125
C
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ELECTRICAL CHARACTERISTICS (V+=12V,Ta=25
C, V
IN
=-10dBV(316mVrms) unless otherwise noted)
TEST CONDITION
INPUT
PARAMETER
SYMBOL
L
R
OUTPUT
MODE
WIDTH
VOLUME
MIN.
TYP.
MAX.
UNIT
Operating
Voltage
V+
-
-
-
-
-
4.7
12.0
13.0
V
-
-
-
BYPASS
-
2.9
5.7
8.6
-
-
-
3D
Stereo
MAX
3.9
7.8
11.7
Operating
Current
I
cc
No Signal
-
-
-
3D Mono
-
3.5
7.0
10.5
mA
Reference
Voltage
V
REF
V+/2
-
-
-
-
-
5.8
6.0
6.2
V
f=1kHz
T.H.D.=3%
V
IN
-
-
V
IN
L
R
BYPASS
-
10.0
(2.51)
12.0
(3.98)
-
f=125Hz
T.H.D.=3%
V
IN
-
-
V
IN
L
R
3D
Stereo
MAX
-1.5
(0.84)
0.5
(1.06)
-
f=125Hz
T.H.D.=3%
V
IN
-
-
V
IN
L
R
3D
Stereo
MIN
-
11.5
(3.76)
-
f=125Hz
T.H.D.=3%
-
V
IN
V
IN
-
L
R
3D
Stereo
MAX
-
0.45
(1.05)
-
f=125Hz
T.H.D.=3%
V
IN
V
IN
V
IN
V
IN
L
R
3D
Stereo
MAX
-
11.9
(3.94)
-
f=125Hz
T.H.D.=3%
V
IN
V
IN
-V
IN
-V
IN
L
R
3D
Stereo
MAX
-7.5
(0.42)
-5.5
(0.53)
-
Maximum
Input Voltage
V
INMAX
f=1kHz
T.H.D.=3%
V
IN
V
IN
L
R
3D Mono
-
-4.6
(0.59)
0.0
(1.0)
-
dBV
(Vrms)
Channel
Balance
CH
BAL
f=1kHz
L-R Output
-
V
IN
V
IN
-
L
R
3D
Stereo
MAX
-1.0
0.0
1.0
dB
NJM2198
- 3 -
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ELECTRICAL CHARACTERISTICS (V+=12V,Ta=25
C, V
IN
=-10dBV(316mVrms) unless otherwise noted)
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MODE SWITCH
MODE
MODE1
BYPASS
L
3D-Sound
H
MODE
MODE2
3D Stereo
L
3D Mono
H
TEST CONDITION
INPUT
PARAMETER
SYMBOL
L
R
OUTPUT
MODE
WIDTH
VOLUME
MIN.
TYP.
MAX.
UNIT
Rg=0
A-Weight
0
0
L
R
BYPASS
-
-
-110
(3.16)
-95
(17.8)
Rg=0
A-Weight
0
0
L
R
3D
Stereo
MAX
-
-90
(31.6)
-85
(56.2)
Output Noise
V
NOISE
Rg=0
A-Weight
0
0
L
R
3D Mono
-
-
-90
(31.6)
-85
(56.2)
dB
(Vrms)
f=1kHz
V
IN
-
-
V
IN
L
R
BYPASS
-
-
0.005
0.01
f=1kHz
V
IN
-
-
V
IN
L
R
3D
Stereo
MAX
-
0.1
1.0
Total
Harmonic
Distortion
T.H.D
f=1kHz
V
IN
-
-
V
IN
L
R
3D Mono
-
-
0.1
1.0
%
Bypass Gain
G
Bypass
f=1kHz
V
IN
-
-
V
IN
L
R
BYPASS
-
-1.0
0.0
1.0
dB
f=125Hz
V
IN
-
-
V
IN
L
R
3D
Stereo
MAX
9.4
11.4
13.4
f=125Hz
V
IN
-
-
V
IN
L
R
3D
Stereo
MIN
-1.5
0.5
2.5
f=125Hz
-
V
IN
V
IN
-
L
R
3D
Stereo
MAX
6.8
8.8
10.8
f=1kHz
V
IN
V
IN
L
3D Mono
-
1.3
3.3
5.3
SRS Gain
G
SRS
f=1kHz
V
IN
V
IN
R
3D Mono
-
-6.9
-4.9
-2.9
dB
V
IN
=
High Level
-
-
-
-
-
2.0
-
V+
Mode Select
Control
Voltage
V
MODE
V
IN
=
Low Level
-
-
-
-
-
0.0
-
0.7
V
NJM2198
- 4 -
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PIN CONFIGURATION
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BLOCK DIAGRAM (DMP-24)
1.FIL4
2.FIL5
3.FIL6
4.FIL7
5.FIL8
6.FIL9
7.VrefIN
8.Vref
9.V+
10.GND
11.MODE1
SDIP- 22
DMP- 24
1.TP1
2.FIL4
3.FIL5
4.FIL6
5.FIL7
6.FIL8
7.FIL9
8. VrefIN
9. Vref
10. V+
11. GND
12. MODE1
13. MODE2
14. TP2
15.ROUT
16.LOUT
17.VOL2
18.VOL1
19.TP3
20.FIL3
21.FIL2
22.FIL1
23.RIN
24.LIN
12.MODE2
13.ROUT
14.LOUT
15.VOL2
16.VOL1
17.TP
18.FIL3
19.FIL2
20.FIL1
21.RIN
22.LIN
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10
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11
22
17
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24
23
LIN
RIN
LOUT
ROUT
Vref
VrefIN
FIL1
FIL2
FIL3
VOL2
VOL1
MODE1
MODE2
FIL4
FIL5
FIL6
FIL7
FIL8
FIL9
V+
GND
50k
50k
VREF
VREF
VREF
BYPASS
VREF
3D-STEREO
3D-MONO
BYPASS
3D-STEREO
3D-MONO
VREF
50k
50k
GND
V+
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