NJRC NJM2192AM Srs trubass bass enhancement processor Datasheet

NJM2192A
PRELI M I NARY
SRS TruBass Bass Enhancement Processor
■GENERAL 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.
■PACKAGE OUTLINE
NJM2192AL
NJM2192AM
■FEATURES
●Operating Voltage
4.7 to 13V
●Punch Control
●Internal Bass Gain Control Switch
●Bypass Function (Through)
●Internal Mode Switch
●External Adjustment for Speaker Size (Small, Medium, Large)
●Bipolar Technology
●Package 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
- 1 –A
NJM2192A
■PIN CONFIGURATION
1
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11
20
12
19
13
18
14
17
15
16
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
■TruBass BLOCK DIAGRAM
a
b
c
INL
50K
VREF
GAIN
SW
BASSINL
( )
Filter ✼
VCA
50K
VREF
Punch VR
VREF
(✼)
■SPEAKER 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.
-2-
BYPASS
BASS2
BASS1
BASSOUT
BASSINR
+6dB
OUTR
a
b
c
50K
VREF
+6dB
OUTL
a
b
c
INR
50K
VREF
MODE SW
Set the speaker size.
NJM2192A
■ABSOLUTE MAXIMUM RATINGS (Ta=25°°C)
PARAMETER
SYMBOL
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
+
V
PD
Topr
Tstg
RATING
UNIT
15
700
-40 to +85
-40 to +125
V
mW
°C
°C
+
■ELECTRICAL CHARACTERISTICS (V =12V,Ta=25°C,VIN=-20dBV(100mVrms), Speaker Size : Medium)
TEST CONDITION
PARAMETER
Operating
Voltage
Supply
Current
Reference
Voltage
Maximum
Input Voltage
IN
SYMBOL
OUT
MODE
PUNCH
VR
MIN.
TYP.
MAX.
UNIT
-
-
-
-
4.7
12.0
13.0
V
0
0
-
BYPASS
-
6.6
11.6
16.6
0
0
-
BASS1
MAX
6.6
11.6
16.6
0
0
-
BASS2
MAX
6.6
11.6
16.6
V /2
0
0
-
-
-
5.8
6.0
6.2
f=1kHz
THD=3%
VIN
-
L
BYPASS
-
10.7
(3.1)
11.7
(3.8)
-
BASS1
MAX
-6.3
(0.5)
-4.3
(0.6)
-
BASS2
MAX
-4.7
(0.6)
-2.7
(0.7)
-
BYPASS
-
-
-105
(5.6)
-98
(12.6)
Total
Harmonic
Distortion
ICC
VREF
VIM
No Signal
+
-
VNO
THD
VIN
R
VIN
VIN
L
VIN
VIN
R
VIN
VIN
L
VIN
VIN
Rg=0Ω
A-Weighted
0
0
R
L
R
Rg=0Ω
A-Weighted
Gain ”L”
0
f=1kHz
VIN =-10dBV
VIN
-
L
-
VIN
R
VIN
VIN
L
VIN
VIN
R
VIN
VIN
L
VIN
VIN
R
VIN
-
L
-
VIN
R
f=100Hz
Gain “L”
GVBYP
-
f=100Hz
THD=3%
Gain “L”
f=100Hz
Gain “L”
BYPASS
Gain
R
+
V
f=100Hz
THD=3%
Gain “L”
Output Noise
L
f=1kHz
L
0
BASS2
MAX
-
-94
(20.0)
-88
(40.0)
BYPASS
-
-
0.005
0.01
BASS1
MAX
-
0.1
1.0
BASS2
MAX
-
0.1
1.0
BYPASS
-
-1.0
0.0
1.0
R
mA
V
dBV
(Vrms)
dBV
(uVrms)
%
dB
-3-
NJM2192A
+
■ELECTRICAL CHARACTERISTICS (V =12V,Ta=25°C,VIN=-20dBV(100mVrms), Speaker Size : Medium )
TEST CONDITION
PARAMETER
SYMBOL
BASS Gain
GVBASS
IN
f=100Hz
Gain “L”
f=100Hz
Gain “L”
f=100Hz
Gain “H”
f=100Hz
Gain “L”
f=100Hz
Gain “H”
Switch
Control
Voltage
OUT
VIN
VIN
L
VIN
VIN
R
VIN
VIN
L
VIN
VIN
R
VIN
VIN
L
VIN
VIN
R
VIN
VIN
L
VIN
VIN
R
VIN
VIN
L
VIN
VIN
R
VIH
19,20,21pin
-
-
-
VIL
19,20,21pin
-
-
-
MODE
PUNCH
VR
MIN.
TYP.
MAX.
BASS1
MAX
11.2
13.2
15.2
BASS1
MIN
-18.4
-14.4
-10.4
BASS1
MAX
15.7
17.7
19.7
BASS2
MAX
12.8
14.8
16.8
BASS2
MAX
16.6
18.6
20.6
-
-
2.0
-
V
0.0
-
0.7
dB
+
V
■MODE SWITCH FUNCTION
MODE1
MODE2
NOTES
BYPASS (a)
L
-
Input Through
BASS1 (c)
H
L
Low Frequency Content of TruBass
BASS2 (b)
H
H
TruBass Mode
(1)
(2)
(1) BASS1:The output signal is low frequency content of TruBass derived from the stereo audio signal.
(2) BASS2:TruBass Mode.
■BASS INPUT AMP GAIN SWITCH FUNCTION
To Increase the TruBass effect with the GAIN Switch.
-4-
UNIT
GAIN
NOTES
Gain Low
L
Normal Position
Gain High
H
Gain +6dB
NJM2192A
■INPUT 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
OUTL
INL
TruBass output signal
OUT
BASSINL
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
Rch input
OUTL
INL
Passive Matrix
TruSurround
NJM2188
etc.
OUT
BASSINL
NJM2192A
INR
BASSINR
“Adjust TruBass effect”
Insert an attenuator before the BASSIN L/R if necessary.
Lch input
INL
RA
RB
VREF
( )
Input attenuator ✼
Rch input
BASSINL
50kΩ
OUTR
50kΩ
NJM2192A
INR
50kΩ
RA
RB
OUTL
BASSINR
50kΩ
VREF
(✼)
Set the attenuator : (RA+RB)≥50kΩ
-5-
NJM2192A
■PIN DESCRIPTION
NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
10
PCIN
PUNCH Control VR
29
C3
Filter Input
VOLTAGE
V+
V+/2
V+
3
FIL2
30
C4
V+
Filter Input
V+/2
V+
1
FILOUT
Filter Output
17
VREFOUT
Vref Output
22
BASSOUT
TruBass Output
V+
V+
50
V+/2
(Low Frequency Content)
50
23
OUTR
Rch Audio Output
24
OUTL
Lch Audio Output
V+
V+
V+
50
2
FIL1
Filter Input
V+/2
50
Vref
-6-
NJM2192A
NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
4
FIL3
5
FIL4
7
FIL6
VOLTAGE
V+
50K
Filter Input
V+/2
50K
50K
11.6K
V+
6
FIL5
8
FIL7
11
FIL8
V+
150
Filter Input
V+/2
V+
9
PCOUT
PUNCH Control VR
12
FIL9
Filter Output
V+
V+
50
V+/2
50
V+
13
C1
V+
V+
Filter Input
0V
10K
-7-
NJM2192A
NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
V+
V+
VOLTAGE
V+
50
14
C2
Filter Input
0V
10K
V+
V+
V+
50K
18
VREFIN
Vref Input
V+
19
GAINSW
Gain SW
20
MODE2
MODE2 SW
21
MODE1
MODE1 SW
V+
BASSINR
26
INR
V+
150
0V
150K
V+
25
V+
V+
150
Audio Input
27
BASSINL
28
INL
V+/2
50K
Vref
-8-
V+/2
50K
NJM2192A
NO.
SYMBOL
FUNCTION
EQUIVALENT CIRCUIT
VOLTAGE
15
GND
GND
0V
16
V+
V+
V+
-9-
NJM2192A
C3
INL
BASS
INL
INR
BASS
INR
OUTL
OUTR
BASS
OUT
MODE 1
MODE 2
GAIN
SW
VREF
IN
VREF
OUT
V+
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
a
b
c
+6dB
+6dB
C4
■BLOCK DIAGRAM
e
d
e
d
50K
a:BYPASS
b:BASS2
c:BASS1
a
b
c
50K
d:Nomal
e:+6dB
FILTER
VREF
FILTER
GND
12
No.
1
2
3
4
5
6
SYMBOL
FILOUT
FIL1
FIL2
FIL3
FIL4
FIL5
FUNCTION
Filter Output
Filter Input
Filter Input
Filter Input
Filter Input
Filter Input
No.
16
17
18
19
20
21
SYMBOL
V+
VREFOUT
VREFIN
GAINSW
MODE2
MODE1
7
FIL6
Filter Input
22
BASSOUT
8
9
10
11
12
13
14
15
FIL7
PCOUT
PCIN
FIL8
FIL9
C1
C2
GND
Filter Input
Punch Control VR
Punch Control VR
Filter Input
Filter Output
Filter Input
Filter Input
GND
23
24
25
26
27
28
29
30
OUTR
OUTL
BASSINR
INR
BASSINL
INL
C3
C4
(1) The BASSOUT is low frequency signal derived from the stereo audio signal.
(2),(3) Refer to “■
■INPUT TERMINAL OPERATING INSTRUCTION”
- 10 -
13
14
15
GND
11
C2
10
C1
9
FIL9
8
FIL8
FIL3
7
PC
IN
FIL2
6
PC
OUT
FIL1
5
FIL7
4
FIL6
3
FIL5
2
VCA
FIL4
1
FIL
OUT
FILTER
MATRIX
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
45.3K
R15
SW2
SW2
0.1uF
0.1uF
C4
57.6K
PCIN
3
4
5
6
7
8
9
10
0.01uF
SW
C1
C2
GND
11
12
C22
MODE1
BASSOUT
Rch OUT
Lch OUT
GND
V+
VREFOUT
VREFIN
18
10uF
PCOUT
2
19
1uF/
C8
FIL7
1
20
C7
FIL6
BASSINR
INR
21
NJM2192A
GAINSW
FIL5
BASSINL
22
FIL9
FIL4
INL
23
MODE2
FIL3
C3
24
FIL8
FIL2
C4
25
PUNCH VR
Max
0.1uF
0.1uF
C2
C1
26
10KB
Min
SW1
SW1
FIL1
27
H
L
158K
R13
H
L
R12
13K
R1
C3
56.2K
R2
FILOUT
28
H
L
107K
R14
H
3.09K
R3
29
0.1uF
0.1uF
8.87K
R5
L
21K
R4
30
C6
C5
37.4K
R6
2.32K
R10
VREF
22.1K
VREF
R11
17
GND
LARGE
13
14
15
MODE2
100uF
C9
V+
12V
10uF
C10
C11
10uF
10uF
C12
10uF
C13
10uF
C14
10uF
C15
C16
10uF
10uF
C17
10uF
C18
10uF
C19
0.1uF
C20
C21
0.01uF
VREF 10K
R7
10K
10K
R8
R9
BASS OUT
Rch OUT
Lch OUT
Rch IN
Lch IN
GND
GND
GAIN
H
L
H
L
MODE2
H
L
MODE1
NJM2192A
■APPLICATION CIRCUIT(1)
16
GND
VREF
SPEAKER SIZE
MEDIUM
SMALL
SW1
H
L
L
SW2
H
H
L
3 MODE SPEAKER SIZE
MODE1
Bypass
-
L
BASS1
L
H
BASS2
H
H
FUNCTION SETTING
- 11 -
- 12 VREF
VREF VREF
3
4
5
6
7
8
9
10
11
R
GND
2
C2
1
BASSINR
OUTL
GND
18
V+
VREFOUT
VREFIN
GAINSW
MODE2
MODE1
BASSOUT
19
C8
INR
20
10uF
FIL8
BASSINL
21
C1
PCIN
INL
22
1uF
C7
PCOUT
C3
OUTR
C4
23
FIL9
FIL7
24
PUNCH VR
FIL6
25
Max
FIL5
26
Min
R6
FIL4
27
0.1uF
FIL3
28
0.1uF
C6
0.1uF
C5
R3
FIL2
29
10KB
C3
0.1uF
C4
FIL1
30
R5
R4
R2
R1
0.1uF
0.1uF
C2
C1
FILOUT
17
GND
12
13
14
15
100uF
C9
V+
12V
10uF
C10
C11
10uF
10uF
C12
10uF
C13
10uF
C14
10uF
C15
C16
10uF
10uF
C17
10uF
C18
10uF
C19
0.1uF
C20
C21
0.01uF
VREF 10K
R7
10K
10K
R8
R9
BASS OUT
Rch OUTPUT
Lch OUTPUT
Rch INPUT
Lch INPUT
GND
GND
GAIN
H
L
H
L
MODE2
H
L
MODE1
NJM2192A
■APPLICATION CIRCUIT(2)
16
NJM2192A
C22
0.01uF
GND
SPEAKER SIZE
LARGE
MEDIUM
R1
56.2K
21K
21K
R2
13K
3.09K
3.09K
SMALL
R3
158K
42K
42K
R4
37.4K
37.4K
22.1K
R5
8.87K
8.87K
2.32K
R6
107K
107K
32K
NJM2192A
■BASS1 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
1k
2k
5k
10k
20k
10k
20k
Hz
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
1k
2k
5k
Hz
Vin=-12.2dBV(245mVrms), Lch In → Lch Out, Punch VR : MAX
V+ = 12V
- 13 -
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
1k
2k
5k
Hz
Vin=-12.2dBV(245mVrms), Lch In → Lch Out, Punch VR : MAX
V+ = 12V
- 14 -
10k
20k
NJM2192A
■BASS2 MODE TYPICAL CHRACTERISITCS
NJM2192(TruBass) GAIN STRUCTURE
“Speaker Size : Small”
+16
+14
+12
a:MAX
+10
+8
+6
+4
dB
b:MIN
+2
+0
-2
-4
-6
-8
-10
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
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
a:MAX
+10
+8
+6
+4
dB
b:MIN
+2
+0
-2
-4
-6
-8
-10
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Vin=-12.2dBV(245mVrms), Lch In → Lch Out, Punch VR a:MAX, b:MIN
V+ = 12V
- 15 -
NJM2192A
NJM2192(TruBass) GAIN STRUCTURE
“Speaker Size : Large”
+16
+14
+12
a:MAX
+10
+8
+6
+4
dB
+2
b:MIN
+0
-2
-4
-6
-8
-10
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
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.
- 16 -
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