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NJM2192A
PRELI M I NARY
SRS TruBass Bass Enhancement Processor
sGENERAL DESCRIPTION The NJM2192A is a Bass Enhancement Processor, based on SRS TruBass technology. The NJM2192A eliminates the need for large speakers to create low frequency fundamental tones, and it enhances and complements subwoofer performance. The NJM2192A is suitable for audio applications which are speaker system for mini components, CD radio cassette, multimedia speaker systems, TV and others. sPACKAGE OUTLINE
NJM2192AL
NJM2192AM
sFEATURES qOperating Voltage 4.7 to 13V qPunch Control qInternal Bass Gain Control Switch qBypass Function (Through) qInternal Mode Switch qExternal Adjustment for Speaker Size (Small, Medium, Large) qBipolar Technology qPackage Outline SDIP30, SDMP30
The TruBass technology right incorporated in the NJM2192A are owned by SRS Labs, a U.S. Corporation and licensed to New Japan Radio Co., Ltd. TruBass is protected under U.S. and foreign patents issued and/or pending. TruBass and the , are trademarks of SRS Labs, Inc. in the United States and selected foreign countries. Neither the purchase of the NJM2192A, 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 NJM2192A 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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NJM2192A
sPIN CONFIGURATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. FILOUT FIL1 FIL2 FIL3 FIL4 FIL5 FIL6 FIL7 PCOUT PCIN FIL8 FIL9 C1 C2 GND 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. V+ VREFOUT VREFIN GAINSW MODE2 MODE1 BASSOUT OUTR OUTL BASSINR INR BASSINL INL C3 C4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
sTruBass BLOCK DIAGRAM
MODE SW
OUTL
INL
50K VREF
INR
a b c a b c
50K VREF
BASSINL
OUTR
GAIN SW
50K VREF
a b c
BYPASS BASS2 BASS1
BASSOUT
+6dB
BASSINR
Filter
()
50K VREF
VCA
+6dB Punch VR
VREF
()
Set the speaker size.
sSPEAKER SIZE SETTING The standard setting of speaker size is as follows.(Reference) *Large Mode : fo 80Hz *Medium Mode : 80Hz < fo 150Hz *Small Mode : 150Hz < fo 250Hz Set the speaker size by TruBass effect of your application.
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NJM2192A
sABSOLUTE MAXIMUM RATINGS (Ta=25C)
PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL V PD Topr Tstg
+
+
RATING 15 700 -40 to +85 -40 to +125
UNIT V mW C C
sELECTRICAL CHARACTERISTICS (V =12V,Ta=25C,VIN=-20dBV(100mVrms), Speaker Size : Medium)
TEST CONDITION PARAMETER SYMBOL
IN L R 0 0 0 0 VIN VIN VIN VIN VIN 0
OUT L
MODE BYPASS BASS1 BASS2 -
PUNCH VR MAX MAX -
MIN.
TYP.
MAX.
UNIT
Operating Voltage Supply Current
V
+
No Signal 0 0 0
4.7 6.6 6.6 6.6 5.8 10.7 (3.1) -6.3 (0.5) -4.7 (0.6) -
12.0 11.6 11.6 11.6 6.0 11.7 (3.8) -4.3 (0.6) -2.7 (0.7) -105 (5.6) -94 (20.0)
13.0 16.6 16.6 16.6 6.2 -
V
ICC
mA
Reference Voltage Maximum Input Voltage
VREF VIM
V /2 f=1kHz THD=3% f=100Hz THD=3% Gain "L" f=100Hz THD=3% Gain "L"
+
0 VIN VIN VIN VIN VIN 0
V
BYPASS
R L
BASS1
MAX
-
dBV
(Vrms)
R L
BASS2
MAX
-98 (12.6) -88 (40.0)
R L R L
BYPASS
Output Noise
VNO
Rg=0 A-Weighted Rg=0 A-Weighted Gain "L"
-
dBV
(uVrms)
0 VIN -
0 R VIN VIN VIN VIN VIN VIN L
BASS2
MAX
-
Total Harmonic Distortion
THD
f=1kHz VIN =-10dBV f=100Hz Gain "L" f=100Hz Gain "L"
BYPASS
-
-
0.005
0.01
R L
BASS1
VIN VIN VIN VIN
MAX
-
0.1
1.0
%
R L
BASS2
MAX
-
0.1
1.0
R L
BYPASS
BYPASS Gain
GVBYP
f=1kHz
VIN -
-
-1.0
0.0
1.0
dB
R
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NJM2192A
sELECTRICAL CHARACTERISTICS (V =12V,Ta=25C,VIN=-20dBV(100mVrms), Speaker Size : Medium )
TEST CONDITION
PARAMETER SYMBOL PUNCH VR
+
IN f=100Hz Gain "L" f=100Hz Gain "L" f=100Hz Gain "H" f=100Hz Gain "L" f=100Hz Gain "H" VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN VIN -
OUT L
MODE
MIN.
TYP.
MAX.
UNIT
BASS Gain
GVBASS
BASS1
MAX
11.2
13.2
15.2
R L
BASS1
MIN
-18.4
-14.4
-10.4
R L
BASS1
MAX
15.7
17.7
19.7
dB
R L
BASS2
MAX
12.8
14.8
16.8
R L
BASS2
MAX -
16.6 2.0 0.0
18.6 -
20.6 V
+
R V 0.7
Switch Control Voltage
VIH VIL
19,20,21pin 19,20,21pin
sMODE SWITCH FUNCTION
MODE1 BYPASS (a) BASS1 (c) BASS2 (b) L H H MODE2 L H NOTES Input Through Low Frequency Content of TruBass TruBass Mode
(2) (1)
(1) BASS1:The output signal is low frequency content of TruBass derived from the stereo audio signal. (2) BASS2:TruBass Mode. sBASS INPUT AMP GAIN SWITCH FUNCTION To Increase the TruBass effect with the GAIN Switch.
GAIN Gain Low Gain High L H NOTES Normal Position Gain +6dB
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NJM2192A
sINPUT TERMINAL OPERATING INSTRUCTION
NJM2192As input equip 4 terminals INL(28pin), INR(26pin), BASSINL(27pin) and BASSINR(25pin).
"Normal Setting"
Short INL and BASSINL, INR and BASSINR at the normal TruBass mode.
Lch input
INL BASSINL
OUTL OUT
TruBass output signal
Rin input
NJM2192A
INR BASSINR
"Connect to the other surround ICs(TruSurround, SRS, etc.)" If NJM2192A is used with the other surround ICs, the low frequency signal is possible to be amplified by the other surround ICs. Then the audio stereo signal input into the BASSIN L/R, and the other surround signal input into INL/R.
Lch input Passive Matrix TruSurround NJM2188 etc.
INL BASSINL INR BASSINR
OUTL OUT
NJM2192A
Rch input
"Adjust TruBass effect" Insert an attenuator before the BASSIN L/R if necessary.
Lch input
RA RB
INL
OUTL 50k OUTR
BASSINL
50k
VREF () Input attenuator Rch input
RA RB
NJM2192A
INR 50k
BASSINR
50k
VREF
()
Set the attenuator : (RA+RB)50k
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NJM2192A
sPIN DESCRIPTION NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT
V+ V+
VOLTAGE
10 29
PCIN C3
PUNCH Control VR V+/2 Filter Input
V+
V+
3 30
FIL2 Filter Input C4 V+/2
V+
V+
V+
1 17 22
FILOUT VREFOUT BASSOUT
Filter Output Vref Output TruBass Output (Low Frequency Content)
50 50
V+/2 23 24 OUTR OUTL Rch Audio Output Lch Audio Output
V+
V+
V+
50
2
FIL1
Filter Input
50
V+/2
Vref
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NJM2192A
NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT
V+ V+
VOLTAGE
4 5 7
FIL3 FIL4 FIL6
50K 50K 11.6K
Filter Input
50K
V+/2
V+
V+
V+
6 8 11
FIL5 FIL7 FIL8 Filter Input
150
V+/2
V+
V+
9 12
PCOUT FIL9
PUNCH Control VR Filter Output
50
V+/2
50
V+
V+
V+
13
C1
Filter Input
10K
0V
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NJM2192A
NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT
V+ V+ V+
VOLTAGE
50
14
C2
Filter Input
10K
0V
V+
V+
V+
50K
18
VREFIN
Vref Input
50K
V+/2
V+
V+
V+
19 20 21
GAINSW MODE2 MODE1
Gain SW MODE2 SW MODE1 SW
150
0V
150K
V+
V+
V+
25 26 27 28
BASSINR INR Audio Input BASSINL INL
50K Vref 150
V+/2
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NJM2192A
NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE
15
GND
GND
0V
16
V+
V+
V+
-9-
NJM2192A
sBLOCK DIAGRAM
MODE 1 MODE 2 OUTR BASS INL BASS INR BASS OUT VREF IN VREF OUT OUTL
GAIN SW
INR
INL
C4
C3
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
+6dB
+6dB
a b c a:BYPASS b:BASS2 c:BASS1
e
d
e
d d:Nomal e:+6dB
a b c
FILTER FILTER
GND
50K
50K
FILTER MATRIX
VCA
1 FIL OUT
2 FIL1
3 FIL2
4 FIL3
5 FIL4
6 FIL5
7 FIL6
8 FIL7
9 PC OUT
10 PC IN
11 FIL8
12 FIL9
13 C1
14 C2
15 GND
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
SYMBOL FILOUT FIL1 FIL2 FIL3 FIL4 FIL5 FIL6 FIL7 PCOUT PCIN FIL8 FIL9 C1 C2 GND
FUNCTION Filter Output Filter Input Filter Input Filter Input Filter Input Filter Input Filter Input Filter Input Punch Control VR Punch Control VR Filter Input Filter Output Filter Input Filter Input GND
No. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
SYMBOL V+ VREFOUT VREFIN GAINSW MODE2 MODE1 BASSOUT OUTR OUTL BASSINR INR BASSINL INL C3 C4
FUNCTION Supply Voltage + V /2 Output + V /2 Input Gain Switch MODE2 Switch MODE1 Switch TruBass Output (1) (Low Frequency Content) Rch Output Lch Output (2) TruBass Input Rch Input (3) TruBass Input Lch Input Filter Input Filter Input
(1) The BASSOUT is low frequency signal derived from the stereo audio signal. (2),(3) Refer to "sINPUT TERMINAL OPERATING INSTRUCTION" s
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V+ VREF
R11 R4 30 1 R3 FILOUT GND C20 0.1uF C19 10uF GND Lch IN R2 29 2 R1 C1 28 3 FIL2 INL 13K H 56.2K L C3 3.09K C4 C21 0.01uF 21K
R10
sAPPLICATION CIRCUIT(1)
R6
R5
VREF
VREF
22.1K
2.32K
37.4K
L
8.87K
H
SW2
SW1
FIL1
C5 4 R12 FIL3 BASSINL 27 R13 26 L 5 FIL4 INR H 25 6 FIL5 BASSINR C4 7 FIL6 FIL7 0.1uF 57.6K 0.1uF 158K
0.1uF
R14
107K
C3
0.1uF
0.1uF C2
R15
45.3K
L
SW2
SW1
C18 10uF
Rch IN
H
C6
0.1uF
24
Lch OUT
C17 10uF 23 C16 10uF
Lch OUT
8
Rch OUT
Rch OUT C15 22 BASSOUT 10uF 21 MODE1 C14 10uF 20 MODE2 C13 10uF 19 GAINSW
Min 9 PCOUT 10KB 10 PCIN FIL8
Max
NJM2192A
VREF PUNCH VR 0.01uF
BASS OUT R9 10K R8 10K
MODE1 L H MODE2 L
SW
11 12 C22
SW2
SW1
Bypass
C7 1uF/ C8 10uF 15 13 GND 14 GND GND
BASS2 SPEAKER SIZE
BASS1
FIL9
C12 C1 10uF 18 VREFIN C2 GND VREFOUT GAIN C11 10uF 17 C10 10uF 16 V+ R7 VREF 10K L H H
LARGE
H
H
-
L
MODE2
H
L
MEDIUM
H
V+ 12V
C9 100uF
L
H
MODE1
H
L
L
3 MODE SPEAKER SIZE
FUNCTION SETTING
SMALL
NJM2192A
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NJM2192A
- 12 30 FILOUT GND C3 29 0.1uF GND Lch INPUT C19 10uF C20 C4 1 2 FIL1 C21 0.01uF C1 28 3 FIL2 INL 0.1uF C2 27 4 FIL3 BASSINL C18 10uF R1 C3 26 5 FIL4 INR 0.1uF Rch INPUT
sAPPLICATION CIRCUIT(2)
R2 25 6 0.1uF C5 C17 10uF C16 10uF C15 10uF 21 C14 10uF 11 FIL8 20 MODE2 C13 10uF 19 GAINSW C12 10uF 18 VREFIN VREFOUT GND C11 10uF 17 C10 10uF 15 16 V+ V+ 12V C22 24 7 FIL6 OUTL FIL5 BASSINR
0.1uF C4 R3
VREF R4 R5 R6 23 8 FIL7 OUTR 0.1uF Min 22 9 PCOUT BASSOUT 10KB 10 PUNCH VR PCIN MODE1 Max 0.1uF C6
Lch OUTPUT
Rch OUTPUT
NJM2192A
VREF VREF
BASS OUT R9 10K R8 10K
MODE1 L H MODE2 L H GAIN R7 VREF 10K L H
R
0.01uF
R6
12 FIL9 C7 13 C1 1uF C8 14 10uF C2 GND
R5 13K 158K LARGE 56.2K
GND GND
R4 21K 42K SPEAKER SIZE MEDIUM 3.09K 21K 42K SMALL 3.09K
R3
R2
R1
8.87K
37.4K
107K
37.4K
8.87K
107K
C9 100uF
22.1K
2.32K
32K
NJM2192A
sBASS1 MODE TYPICAL CHRACTERISITCS NJM2192(TruBass) GAIN STRUCTURE "Speaker Size : Small"
+16 +14 +12 +10 +8 +6 +4 dB +2 +0 -2 -4 -6 -8 -10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
Vin=-12.2dBV(245mVrms), Lch In Lch Out, Punch VR : MAX V+ = 12V NJM2192(TruBass) GAIN STRUCTURE "Speaker Size : Medium"
+16 +14 +12 +10 +8 +6 dB +4 +2 +0 -2 -4 -6 -8 -10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
Vin=-12.2dBV(245mVrms), Lch In Lch Out, Punch VR : MAX V+ = 12V
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NJM2192A
NJM2192(TruBass) GAIN STRUCTURE "Speaker Size : Large"
+16 +14 +12 +10 +8 +6 dB +4 +2 +0 -2 -4 -6 -8 -10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
Vin=-12.2dBV(245mVrms), Lch In Lch Out, Punch VR : MAX V+ = 12V
- 14 -
NJM2192A
sBASS2 MODE TYPICAL CHRACTERISITCS NJM2192(TruBass) GAIN STRUCTURE "Speaker Size : Small"
+16 +14 +12 +10 +8 +6 +4 dB +2 +0 -2 -4 -6 -8 -10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
a:MAX
b:MIN
Vin=-12.2dBV(245mVrms), Lch In Lch Out, Punch VR a:MAX, b:MIN V+ = 12V
NJM2192(TruBass) GAIN STRUCTURE "Speaker Size : Medium"
+16 +14 +12 +10 +8 +6 +4 dB +2 +0 -2 -4 -6 -8 -10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
a:MAX
b:MIN
Vin=-12.2dBV(245mVrms), Lch In Lch Out, Punch VR a:MAX, b:MIN V+ = 12V
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NJM2192A
NJM2192(TruBass) GAIN STRUCTURE "Speaker Size : Large"
+16 +14 +12 +10 +8 +6 +4 dB +2 +0 -2 -4 -6 -8 -10 20 50 100 200 500 Hz 1k 2k 5k 10k 20k
a:MAX
b:MIN
Vin=-12.2dBV(245mVrms) V+ = 12V
Lch In Lch Out, Punch VR a:MAX, b:MIN
[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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