NJW1176
- 1 -
AUDIO PROCESSOR with Subwoofer Output
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GENERAL DESCRIPTION
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PACKAGE OUTLINE
The NJW1176 is a sound processor with subwoofer output
includes all of functions processing audio signal for TV, such
as tone control, balance, volume, mute, and AGC functions.
Also the NJW1176 includes the LPF for subwoofer output
and bass boost function.
The original surround system reproduces natural surround
sound and clear vocal orientation.
All of internal status and variables are controlled by I
2
C
BUS interface.
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FEATURES
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Operating Voltage 7.5 to 13V
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3ch Output (Lch, Rch, Subwoofer ch) / 2ch Output(Lch, Rch)
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LPF Filter (Adjustable cut off frequency by external parts)
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AGC Circuit (It reduces volume difference among input sources.)
Adjustable AGC compression level by I
2
C BUS
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eala(NJRC Original Surround System)
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Simulated Stereo
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I
2
C BUS Interface
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Bi-CMOS Technology
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Package Outline SDIP30, SDMP30, SSOP32
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BLOCK DIAGRAM
NJW1176L
AGC
Bias
TONE
TONE
VOL2
LPF
eala
&
Simulated
Stereo
AGC
IN b
IN a
CVA
CVB
CVW
CTH
CTL
AUX1
AUX0
GND
V+
SCL SDA
Vref
TONE
-Ha
SUR
-
FIL
TONE
-Hb
TONE
-La
TONE
-Lb
LF1
LF2
LF3
OUTa
OUTb
OUTw
VOL2
VOL1
VOL1
I
2
CBUS
Interface
Trimmer
VOL2
TONE
-INb
TONE
INa
-
OUTb
SUR
OUTa
SUR
NJW1176M
NJW1176V
NJW1176
- 2 -
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PIN CONFIGURATION (SDIP30, SDMP30)
No. Symbol
Function
No
Symbol
Function
1
INa
Ach Input
16
Vcc
Power Supply Pin
2
CVW
Wch DAC output terminal for LPF trimmer
17
AUX1
Auxiliary Output1
3
LF1
LPF filter1 terminal
18
AUX0
Auxiliary Output0
4
SUR OUTa
Ach Output for the Other Accessories
19
CTL
DAC Output for Tone Low Frequency
5
TONE INa
Ach Input From the Other Accessories
20
CTH
DAC Output for Tone High Frequency
6
TONE-Ha
Ach Treble Filter
21
VREF
Reference Voltage
7
TONE-La
Ach Bass Filter
22
OUTw
Wch Output
8
OUTa
Ach Output
23
OUTb
Bch Output
9
AGC
AGC Filter
24
TONE-Lb
Bch Bass Filter
10
SUR-FIL
eala and Simulated Stereo Filter
25
TONE-Hb
Bch Treble Filter
11
CVB
DAC Output for Bch Volume & Balance
26
TONE INb
Bch Input from the Other Accessories
12
CVA
DAC Output for Ach Volume & Balance
27
SUR OUTb
Bch Output for the Other Accessories
13
SDA
SDA Data Input (I
2
C BUS)
28
LF3
LPF filter3 terminal
14
SCL
SCL Data Input (I
2
C BUS)
29
LF2
LPF filter2terminal
15 GND
GND
30
INb
Bch
Input
(
)
The AUX0 terminal should be connected via the protection resistance to 5V device.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
30
29
28
27
26
INa
CVW
LF1
TONE-Ha
TONE-La
SUR OUTa
TONE INa
OUTa
AGC
SUR-FIL
CVB
CVA
SDA
SCL
GND
INb
LF2
LF3
TONE-Hb
TONE-Lb
TONE INb
OUTb
OUTw
VREF
CTH
25
24
23
22
21
CTL
AUX0
AUX1
Vcc
20
19
18
17
16
SUR OUTb
NJW1176
- 3 -
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PIN CONFIGURATION (SSOP32)
No. Symbol
Function
No
Symbol
Function
1
INa
Ach Input
17
N.C.
No Connection
2
CVW
Wch DAC output terminal for LPF trimmer
18
Vcc
Power Supply Pin
3
LF1
LPF filter1 terminal
19
AUX1
Auxiliary Output1
4
SUR OUTa
Ach Output for the Other Accessories
20
AUX0
Auxiliary Output0
5
TONE INa
Ach Input From the Other Accessories
21
CTL
DAC Output for Tone Low Frequency
6
TONE-Ha
Ach Treble Filter
22
CTH
DAC Output for Tone High Frequency
7
TONE-La
Ach Bass Filter
23
VREF
Reference Voltage
8
OUTa
Ach Output
24
OUTw
Wch Output
9
AGC
AGC Filter
25
OUTb
Bch Output
10
SUR-FIL
eala and Simulated Stereo Filter
26
TONE-Lb
Bch Bass Filter
11
CVB
DAC Output for Bch Volume & Balance
27
TONE-Hb
Bch Treble Filter
12
CVA
DAC Output for Ach Volume & Balance
28
TONE INb
Bch Input from the Other Accessories
13
SDA
SDA Data Input (I
2
C BUS)
29
SUR OUTb
Bch Output for the Other Accessories
14
SCL
SCL Data Input (I
2
C BUS)
30
LF3
LPF filter3 terminal
15 GND
GND
31
LF2
LPF
filter2terminal
16
N.C.
No Connection
32
INb
Bch Input
(
)
The AUX0 terminal should be connected via the protection resistance to 5V device.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
32
31
30
29
28
INa
CVW
LF1
TONE-Ha
TONE-La
SUR OUTa
TONE INa
OUTa
AGC
SUR-FIL
CVB
CVA
SDA
SCL
GND
INb
LF2
LF3
TONE-Hb
TONE-Lb
TONE INb
OUTb
OUTw
VREF
CTH
27
26
25
24
23
CTL
AUX0
AUX1
Vcc
22
21
20
19
18
SUR OUTb
16
N.C.
N.C.
17
NJW1176
- 4 -
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ABSOLUTE MAXIMUM RATING (Ta=25C)
PARAMETER SYMBOL
RATING
UNIT
Supply Voltage
V
+
15
V
(L, M type) 700
Power Dissipation
P
D
(V type) 800
NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
mW
Operating Temperature Range
Topr
-20 to +75
C
Storage Temperature Range
Tstg
-40 to +125
C
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ELECTRICAL CHARACTERISTICS
( Ta=25C, V+=9V, Rg=600
, R
L
=47k
, Vin=100mVrms/1kHz unless otherwise specified)
Condition
Input
PARAMETER SYMBOL
INa
INb
Output
MIN. TYP. MAX.
UNIT
Operating Voltage
V
+
- -
- 7.5 9.0
13.0
V
Supply Current
I
CC
No
Signal
- - - - 13 25 mA
Reference Voltage
V
REF
No
Signal
- -
- 4.0 4.5 5.0 V
V
in
- OUTa
Maximum Input Voltage
V
IM
VOL=-20dB,THD=1%
- V
in
OUTb
2.8 3.0 - Vrms
V
in
- OUTa
Maximum
Output Voltage
V
OM
VOL=0dB,
THD=1%
- V
in
OUTb
- 2.5 - Vrms
Channel Balance
G
CB
VOL=0dB
- - - -1.5 0.0 1.5 dB
Balance Boost A
BA
BST
CHS="0",BAL="111111" V
in
V
in
OUTa
-2.0 0.0 2.0 dB
Balance Cut A
BA
CUT
CHS="1", BAL="111111"
Vin = 1Vrms
V
in
V
in
OUTa
-
- -70 dB
Balance Boost B
BB
BST
CHS="1",BAL="111111" V
in
V
in
OUTb
-2.0 0.0 2.0 dB
Balance Cut B
BB
CUT
CHS="0", BAL="111111"
Vin = 1Vrms
V
in
V
in
OUTb
-
- -70 dB
Trimmer Boost
TR
BST
VOL=0dB
TRIM = +18dB
V
in
V
in
OUTw
16.0 18.0 20.0
dB
Trimmer Cut
TR
CUT
VOL=0dB
TRIM = Mute
V
in
V
in
OUTw
-
-
-70
dB
V
in
- OUTa
Total Harmonic Distortion
THD
Vo=0.5Vrms,
BW=400Hz to 30kHz
- V
in
OUTb
- - 0.5 %
V
in
- OUTa
Maximum Gain
G
VMAX
VOL=0dB
- V
in
OUTb
-2.0 0.0 2.0 dB
V
in
- OUTa
Minimum Gain
G
VMIN
VOL=MUTE
Vin=1Vrms
- V
in
OUTb
- - -70 dB
V
in
- OUTb
Channel Separation
CS
Vin=1Vrms
A-weighted
- V
in
OUTa
- - -70 dB
Output Noise 1
V
NO1
VOL=0dB
A-weighted
- - - -
-90
(31.6)
-85
(56.2)
dBV
(
Vrms)
Output Noise 2
V
NO2
VOL=MUTE
A-weighted
- - - -
-106
(5.0)
-96
(15.8)
dBV
(
Vrms)
Output Noise 3
V
NO3
VOL=MUTE,TRIM=MUTE
A-weighted
- - - -
-100
(10.0)
-90
(30.0)
dBV
(
Vrms)
BW : Band Width
NJW1176
- 5 -
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ELECTRICAL CHARACTERISTICS
(Ta=25C, V+=9V, Rg=600
, R
L
=47k
, Vin=100mVrms/1kHz unless otherwise specified)
Condition
Input
PARAMETER SYMBOL
INa
INb
Output
MIN. TYP. MAX.
UNIT
TONE
V
in
- OUTa
High Frequency Boost
HF
BST
BCT="1"
TREB=+15dB, f=10kHz
- V
in
OUTb
12.5 15.0 17.5
dB
V
in
- OUTa
High Frequency Flat
HF
FLT
TREB=0,
f=10kHz
- V
in
OUTb
-2.0 0.0 2.0 dB
V
in
- OUTa
High Frequency Cut
HF
CUT
BCT="0"
TREB=-15dB, f=10kHz
- V
in
OUTb
-17.5 -15.0 -12.5
dB
V
in
- OUTa
Low Frequency Boost
LF
BST
BCB="1"
BASS=+15dB, f=100Hz
- V
in
OUTb
12.5 15.0 17.5
dB
V
in
- OUTa
Low Frequency Flat
LF
FLT
BASS=0,
f=100Hz
- V
in
OUTb
-2.0 0.0 2.0 dB
V
in
- OUTa
Low Frequency Cut
LF
CUT
BCB="0"
BASS=-15dB, f=100Hz
- V
in
OUTb
-17.5 -15.0 -12.5
dB
x
AGC
V
in
OUTa
AGC Boost
AGC
BST
Vin=50mVrms, f=1kHz
AGC="1"
V
in
V
in
OUTb
1.5 3.5 5.5 dB
V
in
V
in
OUTa
AGC Flat1
AGC
FLT1
Vin=100mVrms,f=1kHz
AGC="1", AGCL="00"
V
in
V
in
OUTb
-2.5 0.0 2.5 dB
V
in
V
in
OUTa
AGC Flat2
AGC
FLT2
Vin=200mVrms, f=1kHz
AGC="1", AGCL="01"
V
in
V
in
OUTb
-2.5 0.0 2.5 dB
V
in
V
in
OUTa
AGC Flat3
AGC
FLT3
Vin=300mVrms, f=1kHz
AGC="1", AGCL="10"
V
in
V
in
OUTb
-2.5 0.0 2.5 dB
V
in
V
in
OUTa
AGC Flat4
AGC
FLT4
Vin=400mVrms, f=1kHz
AGC="1", AGCL="11"
V
in
V
in
OUTb
-2.5 0.0 2.5 dB
V
in
V
in
OUTa
AGC Cut
AGC
CUT
Vin=2Vrms, f=1kHz
AGC="1"
V
in
V
in
OUTb
-14 -10 -6.0
dB
x
SURROUND
V
in
- OUTa
Surround Gain1
SR
GAIN1
f=100Hz
Surround Effect1
- V
in
OUTb
6.3 8.3 10.3
dB
V
in
- OUTb
Surround Gain2
SR
GAIN2
f=100Hz
Surround Effect1
- V
in
OUTa
2.1 4.1 6.1 dB
V
in
- OUTa
Surround Gain3
SR
GAIN3
f=100 Hz
Surround Effect2
- V
in
OUTb
10.7 12.7 14.7
dB
V
in
- OUTb
Surround Gain4
SR
GAIN 4
f=100Hz
Surround Effect2
- V
in
OUTa
8.4 10.4 12.4
dB
Simulated Stereo1
SR
SIM1
f=1kHz, Simulated Stereo
V
in
V
in
OUTa 1.0 3.0 5.0 dB
Simulated Stereo2
SR
SIM2
f=1kHz, Simulated Stereo
V
in
V
in
OUTb 1.0 3.0 5.0 dB
x
AUX
Logic Output : High
4.5
-
5.5
Logic Output : Mid
2.0
-
3.0
AUX0 Output Voltage
V
AUX0
Logic Output : Low
- - -
0 -
0.5
V
Logic Output : High
3.5
-
V+
AUX1 Output Voltage
V
AUX1
Logic Output : Low
- - -
0 -
0.5
V
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