JRC NJM2188V, NJM2188D, NJM2188M Datasheet
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
50K
SW1
Lch out
SW2
V+
VREF
Rch out
V+
VREF
GND
TRU
SW3
MIX
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%
f=125Hz
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
VIN L
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 -
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