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NJM2190
SRS HEADPHONE 3D SURROUND PROCESSOR
sGENERAL DESCRIPTION The NJM2190 is a headphone surround processor based on SRS technology. It provides a realistic and spacious listening experience through standard headphones. The features of low operating voltage, low output noise, low operating current are very suitable for portable audio applications. sPACKAGE OUTLINE
NJM2190D
sFEATURES qOperating Voltage qLow Operating Current qLow Output Noise qWIDTH Control qBipolar Technology qPackage Outline
(1.8 to 6.0V) (1.3mA typ. at SRS mode) (12.0Vrms typ. at SRS mode)
NJM2190M
NJM2190V DIP16, DMP16, SSOP16
sPIN CONFIGURATION
sBLOCK DIAGRAM
Lch Input WIDTH Control Output WIDTH Control Output Mode Switch Filter Filter Lch Output Ground
1 Lin 2 Wout 3 Win 4 MODE 5 C1 6 C2 7 Lout 8 GND
Rin 16 Rch Input VREF 15 Reference Voltage Output
16
15
14
13
12
11
10
9
BYPASS
REFin 14 V+/2 13 C4 12 C3 11 Rout 10 V+ 9
Reference Voltage Input
SRS
V+/2 output Filter Filter Rch Output 1.8 to 6.0V Supply 1 2 3
MODE CONTROLLER
EXT. FILTER
MATRIX
BIAS
SRS
BYPASS
4
5
6
7
8
The SRS HEADPHONE technology right incorporated in the NJM2190 are owned by SRS Labs, a U.S. Corporation and licensed to New Japan Radio Co., Ltd. SRS HEADPHONE is protected under U.S. and foreign patents issued and/or pending. SRS HEADPHONEand the , are trademarks of SRS Labs, Inc. in the United States and selected foreign countries. Neither the purchase of the NJM2190, 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 NJM2190 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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NJM2190
sABSOLUTE MAXIMUM RATING (Ta=25C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBO L V+ PD Topr Tstg RATINGS 7 (DIP16) 500 (DMP16) 300 (SSOP16) 300 -20 to +75 -40 to +125 UNIT V mW C C
sELECTRICAL CHARACTERISTICS (V+=3V,VIN=-26dBV(50mVrms),Ta=25C, unless otherwise specified.)
CONDITION PARAMETER Operating Voltage Operating Current SYMBO L V+ I cc No Signal 0 0 0 Reference Voltage Maximum Input Voltage V REF V+/2 VI M f=1kHz THD=1% f=100Hz THD=1% f=100Hz THD=1% V+=1.8V f=1kHz THD=1% V+=1.8V f=100Hz THD=1% V+=1.8V f=100Hz THD=1% V IN 0 V IN 0 V IN 0 V IN 0 V IN 0 V IN 0 0 V IN 0 V IN 0 V IN 0 V IN 0 V IN 0 VIN L BYPASS R L SRS R L SRS R L BYPASS R L SRS R L SRS R MAX -22.5 (75) MIN -6.7 (462) MAX MIN 1.3 1.5 0.1 (1012) -11.8 (257) -15.8 (162) -4.7 (582) -16.7 (146) -20.5 (94) 1.7 V 0 0 0 BYPASS SRS SRS MIN MAX 1.8 3.0 0.7 1.3 1.3 6.0 1.0 1.8 1.8 mA V INPUT L R OUTPUT MODE WIDTH VR(*1) MIN TYP MAX UNIT
-
-
dBV (mVrms) -
-
-
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NJM2190
sELECTRICAL CHARACTERISTICS (V+=3V,VIN=-26dBV(50mVrms),Ta=25C, unless otherwise specified.)
CONDITION PARAMETER Maximum Input Voltage(*2) SYMBO L VI N V+=1.8V f=1kHz THD=1% V+=1.8V f=1kHz THD=1% V+=1.8V f=100Hz THD=1% V+=1.8V f=100Hz THD=1% Output Noise VN O 0 0 R Rg=0 A-Weighted L 0 0 R L 0 Total Harmonic Distortion THD VI N 0 V+=1.8V f=1kHz VI N 0 VI N 0 BYPASS Gain L+R Gain G VBYP f=1kHz 0 G L+R VI N f=1kHz L VI N VI N R SRS MAX -1.0 0.0 1.0 VI N R dB VI N R L SRS MIN 0.0 VI N 0 R 0 VI N 0 VI N 0 VI N 0 L BYPASS R L SRS R L SRS R L BYPASS -1.0 0.0 1.0 dB MAX 0.25 0.5 MIN 0.10 % 0.02 SRS MAX SRS MIN INPUT L VI N R VI N R L VI N VI N R L VI N -V I N R L VI N -V I N R L BYPASS SRS MAX -28.5 (38) SRS MIN SRS MAX OUTPUT L SRS MIN MODE WIDTH VR(*1) MIN TYP MAX UNIT
-16.7 (146) -16.7 (146) -22.9 (72) -26.5 (47) -110 ( 3.0) -98 (12.0) -98 (12.0)
-
dBV (mVrms) -
-
-104 ( 6.0) dBV (Vrms)
-
-92 (24.0)
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NJM2190
sELECTRICAL CHARACTERISTICS (V+=3V,VIN=-26dBV(50mVrms),Ta=25C, unless otherwise specified.)
CONDITION PARAMETER L-R Gain (*2) SYMBO L G L- R V IN f=100Hz L V IN Channel Separation MODE Select Control Voltage CS f=1kHz V IN V IH V IL High Level Low Level 0 R 1.3 0.0 V+ V 0.5 0 -V IN R V IN L BYPASS 60.0 80.0 dB SRS MAX 19.3 21.3 23.3 -V IN R dB INPUT L R OUTPUT L SRS MIN 3.7 5.7 7.7 MODE WIDTH VR(*1) MIN TYP MAX UNIT
(*1) Refer to application circuit 1. (*2) The word `-VIN` signifies opposite phase of `VIN'.
sMODE Switch BYPASS MODE SRS MODE MODE L H
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NJM2190
sTERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE
V+
1 16
Lin Rin
Audio Input
150
V+/2
50k
VREF
V+
V+
20k
2
Wout
WIDTH Control Output
V+/2
V+
V+
3
Win
WIDTH Control Input
150
V+/2
V+
V+
150
4
MODE
Mode Switch
150k
-
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NJM2190
sTERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT
V+
VOLTAGE
V+
5
C1
Capacitor Terminal 1 for Filter
2.2k
V+/2
V+
V+
6
C2
Capacitor Terminal 2 for Filter
33k
V+/2
V+
V+
10k
7 10
Lout Rout
Audio Output
400
V+/2
8
GND
Ground
0V
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NJM2190
sTERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE
9
V+
Power Supply
V+
V+
V+ 10k
11
C3
Capacitor Terminal 3 for Filter
10k 200
V+/2
V+
V+
12
C4
Capacitor Terminal 4 for Filter
12k
V+/2
V+
V+
80k
13
V+/2
V+/2 Output
80k
V+/2
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NJM2190
sTERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT
V+
VOLTAGE
14
REFin
Reference Voltage Input
150
V+/2
V+
V+
50
15
VREF
Reference Voltage Output
400
V+/2
50
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NJM2190
sAPPLICATION CIRCUIT 1 Rin
C11 C10
V+/2
C9 C8
Rout
C7
V+
C6
16
15
14
13
12
11
10
9
BYPASS
SRS
EXT. FILTER
MATRIX
BIAS
SRS
BYPASS
MODE CONTROLLER
1
2 Max C1 50k Min 10k
3
4
5
6
7
8
R1
C2
C3
C4
C5
WIDTH VR MODE Lout GND
Lin
Parts No. R1 C1 C2 C3 C4 C5
Value 22k 10F 10F 3.3nF 0.1F 10F
Tolerance 5% 20% 20% 5% 5% 20%
Parts No. C6 C7 C8 C9 C10 C11
Value 22 to 100F 10F 4.7nF 1 to 10F 10 to 7F 10F
Tolerance 20% 5% 20%
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NJM2190
sAPPLICATION CIRCUIT 2 (Without using internal V+/2.)
Rin
Vref
C10
Rout
V+
C8
C6
16
15
14
13
12
11
10
9
BYPASS
SRS
EXT. FILTER
MATRIX
BIAS
SRS
BYPASS
MODE CONTROLLER
1
2 Max 50k Min 10k
3
4
5
6
7
8
R1
C2
C3
C4
WIDTH VR MODE Lout GND
Lin
Parts No. R1 C2 C3 C4
Value 22k 10F 3.3nF 0.1F
Tolerance 5% 20% 5% 5%
Parts No. C6 C8 C10
Value 22 to 100F 4.7nF 10 to 47F
Tolerance 5% -
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NJM2190
sTYPICAL CHARACTERISTICS
GAIN STURUCTURE(WIDTH VR:MAX)
Conditions : SRS MODE , WIDTH VR=MAX , V+=3V a:Vin=-26dBV (Lch.) Vout=Lch. b:Vin=-26dBV (Rch.) Vout=Lch. c:Vin=-26dBV (L+Rch.) Vout=Lch. 25 d:Vin=-26dBV (L-Rch.) Vout=Lch.
20
d
15
a
Gain [dB]
b
10
5
0
c
-5 10 100 1000 10000 100000
Frequency
GAIN STRUCTURE(WIDTH VR:MIN)
Conditions : SRS MODE , WIDTH VR=MIN , V+=3V a:Vin=-26dBV(Lch.) Vout=Lch. b:Vin=-26dBV(Rch.) Vout=Lch. c:Vin=-26dBV(L+Rch.) Vout=Lch. d:Vin=-26dBV(L-Rch.) Vout=Lch. 10
5
d a
0 Gain [dB]
c
-5
-10
b
-15
-20 10 100 1000 10000 100000
Frequency
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NJM2190
sTYPICAL CHARACTERISTICS Maximum Input Voltage vs. Supply Voltage
Maximum Input Voltage vs. Supply Voltage conditions : SRS MODE , WIDTH VR=MAX , f=100Hz a.Vin=Lch. Vout=Lch.(at THD=1%) b.Vin=L-Rch. Vout=Lch.(at THD=1%)
-5
a
-10 Maximum Input Voltage [dBV]
-15
b
-20
-25
-30 1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
Supply Voltage V+[V]
Maximum Input Voltage vs. WIDTH VR
Conditions : SRS MODE , V+=1.8V , f=100Hz a:Vin=Lch. Vout=Lch.(at THD=1%) b:Vin=Lch. Vout=Rch.(at THD=1%) c:Vin=L-Rch. Vout=Lch.(at THD=1%) d:Vin=L-Rch. Vout=Rch.(at -15
Maximum Input Voltage [dBV]
a
-20
b
-25
c d
-30 0 MIN 10 20 WIDTH VR [ohm] 30 40 MAX 50
[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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