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Электронный компонент: NJM2706M

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NJM2706
- 1 -
PRELIMINARY

3D Surround Audio Processor with Dynamic Bass Boost
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GENERAL DESCRIPTION
The NJM2706 is the 3D surround audio processor with
dynamic bass boost, regenerates rich sound field with only
small two speakers.
The NJM2706 performs NJRC original surround technology
realizing natural surround sound field regarded center
orientation and NJRC original dynamic bass boost technology
p r o v i d e s g r ac ef u l b as s s o u n d wi t h l o w d i s t o r t i o n .
It is suitable for mini-component, CD radio-cassette, TV,
speaker system and others.


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FEATURES
q
Operating Voltage
+4.7V to +13.0V
q
Wide Dynamic Range
3.1Vrms typ.
q
Low Output Noise
8.9
Vrms typ.
q
"eala" 3D Surround Function (Stereo only)
q
Dynamic Bass Boost Function
q
High Frequency Compensation (f=10kHz, GV=+3dB)
q
Variable Surround Effect by external resistor
q
Internal Mode Control Switch
q
Bipolar Technology
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Package Outline
DMP24, SSOP24


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BLOCK DIAGRAM


















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PACKAGE OUTLINE
NJM2706VE1 NJM2706M
H:eala_Bass
H:eala
L:BYPASS
H
L
L
H
H
L
1
50
K
50K
3D FILTER
LPF
2
3
4
5
11
12
16
17
18
19
20
21
22
Vref
50K
50
K
14
15
13
23
24
9
10
8
6
7
VC
HP
HP
H
L
L:BYPASS
SW
SW
SW
SW
SW
SW

NJM2706
- 2 -
PRELIMINARY
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PIN CONFIGURATION
















DMP24, SSOP24 (Top View)
1. LPF
13. V+
2. MIN
14. VREFOUT
3. MOUT
15. VREFIN
4. Ca
16. SW1
5. Cr
17. SW2
6. BASSFIL1
18. ealaFIL
7. BASSFIL2
19. HFFILL
8. BASSVRIN
20. HFFILR
9. BASSVROUT
21. ROUT
10. ealaVRIN
22. LOUT
11. ealaVROUT
23. RIN
12. GND
24. LIN
22
21
4
6
5
1
2
3
7
24
23
8
10
9
11
12
14
13
16
15
18
17
20
19
NJM2706
- 3 -
PRELIMINARY
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ABSOLUTE MAXIMUM RATING (Ta=25
C)
PARAMETER SYMBOL
RATINGS UNIT
Supply Voltage
V
+
15 V
Power Dissipation
P
D
(DMP24) 700
(SSOP24) 600
mW
Operating Temperature Range
T
opr
-40
to
+85
C
Storage Temperature Range
T
stg
-40
to
+125
C
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OPERATING VOLTAGE
PARAMETER
SYMBOL
TEST CONDITION
MIN
TYP
MAX
UNIT
Operating Voltage
V
+
- 4.7
12.0
13.0
V
s
s
s
s
ELECTRICAL CHARACTERISTICS (Ta=25
C, V+=12V unless otherwise specified)
TEST CONDITION
INPUT
PARAMETER
SYMBOL
L R
OUT
PUT
MODE
eala
VR
Bass
VR
MIN TYP MAX UNIT
0 0 - Bypass - -
- 15.4 23.0
Operating Current
I
CC
No Signal
0 0 - Bass MAX
-
- 15.4 23.0
mA
Reference Voltage
Vref
No Signal
0
0
-
-
-
-
5.8
6.0
6.2
V
q
AC CHARACTERISTICS (Ta=25
C, V
+
=12V, V
IN
=-20dBV(100mVrms) unless otherwise specified)
TEST CONDITION
INPUT
PARAMETER
SYMBOL
L R
OUT
PUT
MODE
eala
VR
Bass
VR
MIN TYP MAX UNIT
f=1kHz
THD=3%
V
IN
-
-
V
IN
L
R
Bypass - -
10.0
(3.2)
12.0
(4.0)
-
f=100Hz
THD=3%
V
IN
V
IN
*1
Bass
MAX
- -
6.0
(2.0)
-
f=1kHz
THD=3%
V
IN
-
-
V
IN
L
R
eala -
MAX -
7.9
(2.5)
-
f=10kHz
THD=3%
V
IN
-
-
V
IN
L
R
eala
Bass
MAX
MAX
7.8
(2.5)
9.8
(3.1)
-
Maximum
Input Voltage
V
IM
f=100Hz
THD=3%
V
IN
-
-
V
IN
L
R
eala
Bass
MAX
MAX
3.4
(1.5)
5.4
(1.9)
-
dBV
(Vrms)
Rg=0
A-Weighted
0 0
L
R
Bypass - -
-
-110
(3)
-100
(10)
Rg=0
A-Weighted
0 0
L
R
Bass MAX
-
-
-98
(13)
-
Rg=0
A-Weighted
0 0
L
R
eala -
MAX -
-100
(10)
-
Output Noise
V
NO
Rg=0
A-Weighted
0 0
L
R
eala
Bass
MAX
MAX -
-97
(14)
-92
(25)
dBV
(
Vrms)
f=1kHz
V
IN
-
-
V
IN
L
R
Bypass - -
- 0.005 0.01
f=100Hz
V
IN
V
IN
V
IN
V
IN
L
R
Bass
MAX
- - 0.05 -
f=1kHz
V
IIN
-
-
V
IN
L
R
eala
- MAX - 0.05 -
Total Harmonic
Distortion
THD
f=1kHz
V
IN
-
-
V
IN
L
R
eala
Bass
MAX
MAX - 0.05 0.5
%
*1:BASSVR2OUT

NJM2706
- 4 -
PRELIMINARY
q
AC CHARACTERISTICS (Ta=25
C, V
+
=12V, V
IN
=-20dBV(100mVrms) unless otherwise specified)
TEST CONDITION
INPUT
PARAMETER
SYMBOL
L R
OUT
PUT
MODE
eala
VR
Bass
VR
MIN TYP MAX UNIT
Bypass Gain
G
VBYP
f=1kHz
V
IN
-
-
V
IN
L
R
Bypass - - -1.0 0.0 1.0 dB
f=100Hz
V
IN
V
IN
V
IN
V
IN
L
R
Bass MAX
- 4.4 6.4 8.4
f=100Hz
V
IN
V
IN
V
IN
V
IN
L
R
Bass MIN - -2.0 0.0 2.0
f=1kHz
V
IN
-
-
V
IN
L
R
eala
- MAX 2.1 4.1 6.1
f=1kHz
V
IN
-
-
V
IN
L
R
eala
- MIN
-2.0 0.0 2.0
f=100Hz
V
IN
-
-
V
IN
L
R
eala
Bass
MAX
MAX 5.9 7.9 9.9
eala Gain
G
eala
f=10kHz
V
IN
-
-
V
IN
L
R
eala
Bass
MAX
MAX 0.0 2.0 4.0
dB
q
q
q
q
CONTROL CHARACTERISTICS (Ta=25
C, V
+
=12V, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITION
MIN
TYP
MAX
UNIT
V
IN
=High Level
2.0 - V
+
MODE Select
Control Voltage
V
MODE
V
IN
=Low Level
0.0 - 0.7
V
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SWITCH FUNCTION
MODE SW2 SW1
NOTES
Bypass L L
Input Through
eala L H
3D Surround mode
Bass H L
Bass Enhanced mode
eala Bass
H
H
3D Surround and Bass Enhanced mode
NJM2706
- 5 -
PRELIMINARY
!
TERMINAL DESCRIPTION
No. SYMBOL
FUNCTION
EQUIVALENT
CIRCUIT
VOLTAGE
1
LPF
Capacitor terminal for LPF
V+/2
2
MIN
Monaural Amplifier Input
V+/2
3
MOUT
Monaural Amplifier Output
V+/2
4
5
Ca
Cr
Capacitor Terminal for
Attack Time Constant
Capacitor Terminal for
Release Time Constant
0V
6
BASSFIL1
BASS Filter Terminal 1
0V

150
16k
V+
V+
150
V+
V+
V+
20k
V+
50
50
V+
16k
10k
100
10k
V+
V+
150
V+
V+
V+
10k
82k
VCA