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NJM2187
Passive Matrix TruSurroundTM 3D AUDIO PROCESSOR
s GENERAL DESCRIPTION s PACKAGE OUTLINE TM *) The NJM2187 is a Passive Matrix TruSurround 3D audio processor. It regenerates the full surround sound field directly from any kind of surround encoded stereo signal input. The internal passive matrix circuit decodes the surround encoded stereo signal, then the TruSurround Virtualizer encodes into two speaker virtual surround signal. Therefore no front processor which decode the surround encoded stereo signal to the 4 channel signals is required. The NJM2187 also includes the SRS 3D-STEREO, and regenerates a 3D sound field from normal L/R input. The NJM2187 is suitable for TV, mini component, CD radio cassette, NJM2187L multimedia speaker systems and others.
sFEATURES qOperating Voltage (4.7 to 13V) + qMaximum Input Voltage (2.1Vrms typ. at TRU mode, V 11V) qLow Output Noise (35Vrms typ. at TRU mode) qSRS 3D-STEREO FUNCTION qBYPASS FUNCTION (THROUGH) qBipolar Technology qPackage Outline SDIP30,SDMP30
NJM2187M
The TruSurround technology right incorporated in the NJM2187 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 selected foreign countries. Neither the purchase of the NJM2187, nor the corresponding sale of audio enhancement equipment conveys the right to sell commercialized recordings made with any TruSurround technology. SRS Labs requires that all users of the NJM2187 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:949-442-1070 Fax:949-852-1099 http://www.srslabs.com
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NJM2187
CENTER_OUT 17 14 FIL2_IN
s PIN CONFIGURATION
SPACE_OUT SPACE_IN FIL1_OUT FIL1_IN CE_IN2 F_OUT Rch IN Lch IN FI_IN
30
29
28
27
26
25
24
23
22
21
20
19
18
16
NJM2187
1 MO3
2 MODE2
3 MODE1
4 VREF
5 GND
6 V+
7 T1
8 T2
9 T3
10 T4
11 Rch out
12 Lch out
13 FIL2_IN2
15 FIL2_OUT
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
SYMBOL MO3 MODE2 MODE1 VREF GND + V T1 T2 T3 T4 Rch OUT Lch OUT FIL2_IN2 FIL2_IN FIL2_OUT
+
FUNCTION V IN Mode Switch Mode Switch + V /2 output Ground Supply Voltage 4.5 to 13V test pin test pin test pin test pin Right channel output Left channel output Perspective Network_2 input Perspective Network_2 input Perspective Network_2 output
No. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
SYMBOL CENTER_IN CENTER_OUT SPACE_IN SPACE_OUT FIL1_IN FIL1_OUT Lch in Rch in FI in T5 CE in T6 T7 F_IN F_OUT
CENTER_IN
F_IN
T7
T6
T5
FUNCTION CENTER gain adjustment CENTER gain adjustment SPACE gain adjustment SPACE gain adjustment Perspective Network_1 input Perspective Network_1 output Left channel input Right channel input Perspective Network input Test pin CENTER input Test pin Test pin Perspective Network_3 input Perspective Network_3 output
s BLOCK DIAGRAM
BY PASS TRU
Lch out
TRU BY PASS
Lch in Rch in
EXT FIL 1
TRU 3D STERE
R
3D STEREO
R
SPACE VR
MIX
TRU
Rch out
CENTER VR EXT FIL 2
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NJM2187
s ABSOLUTE MAXIMUM RATING (Ta=25C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL + V PD TOPR Tstg
+
RATING 15 700 -20 to +75 -40 to +125
UNIT V mW C C
sELECTRICAL CHARACTERISTICS(V =12V,Ta=25C, 0dBu=775mVrms)
PARAMETER Operating Voltage Supply Current Reference Voltage Maximum Input Voltage SYMBOL V
+
TEST CONDITION
MIN. 4.7
TYP. 12.0 20.0 6.0 13.5 (3.7) 11.3 (2.8) 8.5 (2.1) -98.0 (13) -89.0 (35) -89.0 (35) 0.01 0.1 0.1 0.0 2.3 -11.4
MAX. 13.0 30.0 6.5 15.5 (4.6) 13.3 (3.6) 10.5 (2.6) -84.0 (63) -84.0 (63) -84.0 (63) 1.0 3.3 -10.4
UNIT V mA V
Icc VREF VINMAX
No Signal V /2 VIN=L,Rch f=1kHz VOUT=L,Rch at THD=3% VIN=L,Rch f=125Hz VOUT=L,Rch at THD=3% VIN=L,Rch f=125Hz VOUT=L,Rch at THD=3%
+
BYPASS MODE
10.0 5.5
BYPASS MODE 3D-STEREO MODE TRU MODE BYPASS MODE 3D-STEREO MODE TRU MODE BYPASS MODE 3D-STEREO MODE TRU MODE BYPASS MODE TRU MODE TRU MODE
11.5 (2.9) 9.3 (2.3) 6.5 (1.6) -1.0 1.3 -12.4
dBu (Vrms)
Output Noise
VNOISE
CCIR-ARM VIN=GND VOUT=L,Rch CCIR-ARM VIN=GND VOUT=L,Rch CCIR-ARM VIN=GND VOUT=L,Rch
dBV (uVrms)
Total Harmonic Distortion
THD
VIN=-10dBu Lch f=1kHz,VOUT=Lch VIN=-10dBu Lch f=1kHz,VOUT=Lch VIN=-10dBu Lch f=1kHz,VOUT=Lch
%
BYPASS Gain Passive Gain Passive Gain
GBypass GPASV-L GPASV-R
VIN=0dBu Lch f=1kHz,VOUT=L,Rch VIN=0dBu Lch f=1kHz,VOUT=Lch VIN=0dBu Lch f=1kHz,VOUT=Rch
dB dB dB
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NJM2187
s ELECTRICAL CHARACTERISTICS(V =12V,Ta=25C, 0dBu=775mVrms)
+
PARAMETER Feed Through Gain
SYMBOL GTHROUGH
L+R Gain
GL+R
L-R Gain
GL-R
TEST CONDITION VIN=0dBu Lch 3D-STEREO f=1kHz,VOUT=Lch MODE SPACE VR Min CENTER VR Min VIN=0dBu Lch 3D-STEREO f=1kHz,VOUT=Rch MODE SPACE VR Min CENTER VR Max VIN=0dBu Lch 3D-STEREO f=125Hz,VOUT=Rch MODE SPACE VR Max CENTER VR Min VIN=High Level VIN=Low Level
MIN
TYP.
MAX
UNIT
-19.2
-18.2
-17.2
dB
-14.0
-13.0
-12.0
dB
-2.0
0.0
2.0
dB
MODE Select Control Voltage
VMODE
2.0 0.0
-
V
+
V 0.7
sMODE SELECT FUNCTION
MODE BYPASS TSV 3D-STEREO Passive Matrix TruSurround(TRU) MODE1 L L H H MODE2 L H L H NOTE INPUT THROUGH MODE TRU MODE + Variable effects by SPACE and CENTER VR SRS 3D-STEREO MODE (Normal STEREO Source) Variable effects by SPACE and CENTER VR Lt/Rt input MODE
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NJM2187
s PIN DESCRIPTION 1,2,3 PIN
V+
4,7,8,9,10,11,12,15,17,21,28 PIN
V+
50
150k
50
13,19,30 PIN
V+
22,23,24,25,26,27 PIN
V+
50
50
50 k
VREF
14,20,29 PIN
V+
16,18 PIN
V+
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NJM2187
s APPLICATION CIRCUIT
R7 150K R1 C2 0.22uF C3 0.0047uF R8 15K 0.01uF 0.22uF 3.9K C1 R2 R4 1K C4 R5 R6
SW1 Lch in Rch in
C16 10uF/50V R28 2.4K R30 R31 6.8K 51K C15 10uF/50V 2.4K R29 6.8K 1K
20K 11K
SW2
R32
8.2K
R3
VREF VREF R33
VREF
VREF VR1 R27 10K 10KB
VREF
VREF
5.6K VREF
SPACE VR VR2 10KB
CENTER VR
FIL1_OUT
FI_IN
CENTER_OUT
SPACE_OUT
T7
T6
T5
FIL1_IN
CE_IN
Rch IN
SPACE_IN
CENTER_IN
F_OUT
Lch IN
F_IN
VREF
NJM2187
Rch OUT FIL2_IN2 VREF GND MO3 T1 T2 T3 T4 FIL2_OUT Lch OUT MODE2 MODE1 FIL2_IN V+ R10 2M 10uF/50V 10uF/50V 12V R9 1.8K R12 0.01uF 39K C6 C5 0.0047uF R11 51K C7 0.0047uF R14 1.5K R13 33K R15 75K
H L H L
R35 10K 100uF/25V
V+
C21
R34 10K C24 10uF/50V C23 10uF/50V
100uF/25V
C26
C27
C22
Rch out
GND
Lch out
VREF GND
GND
Gain control SW (SW1, SW2) TRU 3D-Stereo Bypass OFF ON ON
GND GND GND
VREF
PARTS No. C1,C6 C2,C4 C3,C5,C7 C15,C16,C21,C22,C23,C24 C26,C27 R1,R4,R34,R35 R2 R3,R11 R5 R6 R7 R8
VALUE 0.01F 0.22F 0.0047F 10F 100F 1k 3.9k 51k 20k 11k 150k 15k
TOLERANCE 5% 5% 5%
PARTS No. R9 R10 R12 R13 R14 R15 R27 R28,R30 R29,R31 R32 R33
5% 5% 5% 5% 5% 5% 5%
VALUE 1.8k 2M 39k 33k 1.5k 75k 10k 2.4k 6.8k 8.2k 5.6k
TOLERANCE 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
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NJM2187
s TYPICAL CHARACTERISTICS
5 0 -5 Gain (dBu) -10 -15 -20 -25 -30 10 100
TruSurround G STRUCTURE AIN BYPASS Mode (V+=12V) a:Vin=0dBu(Front Lch) Vout=Lch b:Vin=0dBu(Front Rch) Vout=Rch
a,b
1k Frequency f (Hz)
10k
100k
Passive
10 5 0 -5 -10 -15 -20 -25 -30 10 100
Matrix TruSurround (Lt/Rt) Tru Mode (V +=12V) a:Vin=0dBu(Front Lch) Vout=Lch b:Vin=0dBu(Front Lch) Vout=Rch c:Vin=0dBu(Front Rch) Vout=Lch d:Vin=0dBu(Front Rch) Vout=Rch
GAIN
a,d
Gain ( dBu)
b,c
1k Frequency f (Hz)
10k
100k
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NJM2187
s TYPICAL CHARACTERISTICS
TruSurround GAIN STRUCTURE 3D-STEREO Mode (V + =12V) a:Vin=0dBu(Lch) Vout=Lch, SPACE VR max, CENTER VR max b:Vin=0dBu(Lch) Vout=Rch, SPACE VR max, CENTER VR min c:Vin=0dBu(Lch) Vout=Rch, SPACE VR min, CENTER VR max d:Vin=0dBu(Lch) Vout=Lch, SPACE VR min, CENTER VR min 5 a 0 -5 Gain (dBu) -10 c -15 d -20 -25 -30 10 100 1k Frequency f (Hz) 10k 100k b
[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.
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