JRC NJM2192AL, NJM2192AM Datasheet
NJM2192A
PRELIMINARY
SRS TruBass Bass Enhancement Processor
■■■■
GENERAL DESCRIPTION
The NJM2192A is a Bass Enhanc em ent Proces sor,
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, multim edia speak er s ystems, T V and
others.
■■■■
FEATURES
●Operating Voltage 4.7 to 13V
■■■■
PACKAGE OUTLINE
NJM2192AL
●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
New Japan Radio Co., Ltd. TruBass is protected under U. S. and foreign pat ents is sued and/or pendi ng. TruBass and the
Tel:949-442-1070 Fax:949-852-1099 http://www.srslabs.com
, are trademarks of SRS Labs, Inc. in the United S tates and selected f oreign countries. Neither t he purchase of the
NJM2192A
recordings made with any SRS technology.
SRS Labs requires that all users of the
royalty is not included in the purchase price. SRS Labs also requires any users to com ply with all rul es and regulat ions as
outlined in the SRS Trademark Usage Manual.
For further information, pl ease contact:
, nor the corresponding sale of audio enhancement equipment conveys the right to sell commercialized
SRS Labs, Inc.
2909 Daimler Street. Santa Ana, CA 92705 USA
NJM2192A
NJM2192A
are owned by SRS Labs, a U.S. Corporation and licens ed to
must enter into a license agreement direc tly with SRS Labs if the
NJM2192AM
- 1 –A
(✼)
(✼)
NJM2192A
■■■■PIN CONFIGURATION
1
1 0
1 1
1 2
1 3
1 4
1 5
2
3
4
5
6
7
8
9
3 0
1. FILOUT 16. V+
2. FIL1 17. VREFOUT
2 9
2 8
3. FIL2 18. VREFIN
4. FIL3 19. GAINSW
5. FIL4 20. MODE2
2 7
2 6
6. FIL5 21. MODE1
7. FIL6 22. BASSOUT
8. FIL7 23. OUTR
2 5
2 4
2 3
2 2
9. PCOUT 24. OUTL
10. PCIN 25. BASSINR
11. FIL8 26. INR
12. FIL9 27. BASSINL
13. C1 28. INL
14. C2 29. C3
2 1
2 0
1 9
1 8
1 7
1 6
15. GND 30. C4
■■■■
TruBass BLOCK DIAGRAM
INL
INR
BASSINL
BASSINR
50K
VREF
50K
VREF
50K
VREF
50K
VREF
+6dB
+6dB
+6dB
GAIN
SW
Filter
Punch VR
■■■■
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.
VCA
VREF
Set the speaker size.
MODE SW
a
b
c
a
b
c
a BYPASS
b BASS2
c BASS1
OUTL
OUTR
BASSOUT
- 2 -
■■■■ABSOLUTE MAXIMUM RATINGS (Ta=25°°°°C)
PARAMETER SYMBOL RATING UNIT
Supply Voltage V+ 15 V
Power Dissipation PD 700 mW
Operating Temperature Range T
Storage Temperature Range T
-40 to +85 °C
opr
-40 to +125 °C
stg
NJM2192A
■■■■ELECTRICAL CHARACTERISTICS (V
PARAMETER SYMBOL
Operating
Voltage
Supply
Current
Reference
V
Voltage
Maximum
Input Voltage
Output Noise
Total
THD
Harmonic
Distortion
BYPASS
GV
Gain
V+
ICC No Signal
REF
VIM
V
NO
f=1kHz
BYP
- - -
+
/2 0 0 -
V
f=1kHz
THD=3%
f=100Hz
THD=3%
Gain “L”
f=100Hz
THD=3%
Gain “L”
Rg=0Ω
A-Weighted
Rg=0Ω
A-Weighted
Gain ”L”
f=1kHz
V
=-10dBV
IN
f=100Hz
Gain “L”
f=100Hz
Gain “L”
+
=12V,Ta=25°C,VIN=-20dBV(100mVrms), Speaker Size : Medium)
TEST CONDITION
IN
L R
OUT
0 0 0 0 0 0 -
V
- L
I N
- V
V
I N
V
I N
V
I N
V
I N
0 0
R
I N
V
L
I N
V
R
I N
V
L
I N
V
R
I N
L
R
L
0 0
R
V
- L
I N
- V
V
I N
V
I N
V
I N
V
I N
V
I N
- V
R
I N
V
L
I N
V
R
I N
V
L
I N
V
R
I N
- L
R
I N
MODE
-
BYPASS
BASS1
BASS2
-
BYPASS
BASS1
BASS2
BYPASS
BASS2
BYPASS
BASS1
BASS2
BYPASS
PUNCH
VR
- 4.7 12.0 13.0 V
- 6.6 11.6 16.6
MAX 6.6 11.6 16.6
MAX 6.6 11.6 16.6
- 5.8 6.0 6.2 V
-
MAX
MAX
- -
MAX -
- - 0.005 0.01
MAX - 0.1 1.0
MAX - 0.1 1.0
- -1.0 0.0 1.0 dB
MIN. TYP. MAX. UNIT
10.7
(3.1)
-6.3
(0.5)
-4.7
(0.6)
11.7
(3.8)
-4.3
(0.6)
-2.7
(0.7)
-105
(5.6)
-94
(20.0)
-
-
-
-98
(12.6)
-88
(40.0)
mA
dBV
(Vrms)
dBV
(uVrms)
%
- 3 -
NJM2192A
■■■■ELECTRICAL CHARACTERISTICS (V
PARAMETER SYMBOL
BASS Gain
Switch
Control
Voltage
GV
VIH 19,20,21pin
V
BASS
19,20,21pin
IL
IN OUT
f=100Hz
Gain “L”
f=100Hz
Gain “L”
f=100Hz
Gain “H”
f=100Hz
Gain “L”
f=100Hz
Gain “H”
■■■■MODE SWITCH FUNCTION
+
=12V,Ta=25°C,VIN=-20dBV(100mVrms), Speaker Size : Medium )
TEST CONDITION
PUNCH
VR
MAX 11.2 13.2 15.2
MIN -18.4 -14.4 -10.4
MAX 15.7 17.7 19.7
MAX 12.8 14.8 16.8
MAX 16.6 18.6 20.6
V
V
I N
V
V
I N
V
V
I N
V
V
I N
V
V
I N
V
V
I N
V
V
I N
V
V
I N
V
V
I N
V
V
I N
L
I N
R
I N
L
I N
R
I N
L
I N
R
I N
L
I N
R
I N
L
I N
R
I N
MODE
BASS1
BASS1
BASS1
BASS2
BASS2
- - - - - 2.0 - V
MIN. TYP. MAX. UNIT
+
- - - 0.0 - 0.7
dB
V
MODE1 MODE2 NOTES
BYPASS (a) L - Input Through
BASS1 (c) H L Low Frequency Content of TruBass
BASS2 (b) H H 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.
■■■■BASS INPUT AMP GAIN SWITCH FUNCTION
To Increase the TruBass effect with the GAIN Switch.
GAIN NOTES
Gain Low L Normal Position
Gain High H Gain +6dB
- 4 -
p
(✼)
(✼)
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
Rin input
INL
BASSINL
INR
BASSINR
NJM2192A
OUTL
OUT
TruBass output signal
“Connect to the other surround ICs(TruSurround, SRS, etc.)”
If NJM2192A is used with the other surround ICs, the low f requency 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 in
ut
Passive Matrix
TruSurround
NJM2188
etc.
INL
INR
BASSINL
BASSINR
NJM2192A
OUTL
OUT
“Adjust TruBass effect”
Insert an attenuator before the BASSIN L/R if necessary.
Lch input
INL
R
A
50kΩ
OUTL
OUTR
Input attenuator
Rch input
R
VREF
R
B
A
BASSINL
INR
50kΩ
NJM2192A
50kΩ
R
B
BASSINR
50kΩ
VREF
Set the attenuator : (RA+RB)≥50kΩ
- 5 -
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