NJW1144
AUDIO PROCESSOR
s
GENERAL DESCRIPTION
s
PACKAGE OUTLINE
The
NJW1144
is a sound processor includes all of the
functions required to process the audio signal for TV, such
as tone control, balance, volume, mute, and AGC functions.
Also the
NJW1144
performs BBE sound enhancement
and SRS 3D Stereo. The BBE regenerates high definitive
and nearly real sound, and SRS 3D Stereo regenerates 3D
surround sound with only two speakers.
All of the internal status and variables are controlled by
NJW1144GK1
2
I C BUS interface.
s
FEATURES
q
Operating Voltage
8 to 13V
2
q
I C BUS Interface
q
BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
q
Internal 6 Input Audio Selectors and Monitor Output
q
The AGC circuit reduces volume difference among input sources.
2
q
Variable AGC Compression Level via I C (4-levels)
q
SRS 3D Stereo and Simulated Stereo
2
q
Variable Surround Effect Level via I C
q
Low Noise VCA
q
Bi-CMOS Technology
q
Package Outline
SOP40
s
BLOCK DIAGRAM
MONa
AGC
TONE TONE
-Ha
-La
OUTa
-2dB
+4.5dB
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
SDA
SCL
CVA
CVB
CTH
CTL
CSR
CSB
SEL
VOL1
SRS
3D Stereo
&
Sim ulated
Stereo
VOL1
-2dB
BBE
TONE
VOL2
I
2
C BUS
Interface
AGC
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
SEL
BBE
TONE
VOL2
Bias
GND
Vcc
+4.5dB
MONb
TONE TONE
-Hb
-Lb
OUTb
Vref
-1-
NJW1144
s
PIN CONFIGURATION
Ach Input Terminal 1
Ach Input Terminal 2
Ach Input Terminal 3
Ach Input Terminal 4
Ach Input Terminal 5
Ach Input Terminal 6
Ach Monitor Output Terminal (-2dB)
Surround Filter 1
Ach BBE Filter 1
Ach BBE Filter 2
Ach Treble Filter
Ach Bass Filter
Ach Line Output Terminal (4.5dB)
Ach Output Terminal (0dB)
AGC Filter
Pop Noise Reduction Filter
f or Ach V olume & Balance
Pop Noise Reduction Filter
f or Bch V olume & Balance
I
2
C Bus Data Input
I
2
C Bus Clock Input
GND Terminal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
MONa
SRS/SS FIL1
BBE1a
BBE2a
TONE-Ha
TONE-La
LINEa
OUTa
A GC
CV a
CV b
SDA
SCL
GND
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
MONb
SRS FIL2
BBE1b
BBE2b
TONE-Hb
TONE-Lb
LINEb
OUTb
CSR
CTH
CTL
CSB
V ref
V+
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Bch Input Terminal 1
Bch Input Terminal 2
Bch Input Terminal 3
Bch Input Terminal 4
Bch Input Terminal 5
Bch Input Terminal 6
Bch Monitor Output terminal (-2dB)
Surround Filter 2
Bch BBE Filter 1
Bch BBE Filter 2
Bch Treble Filter
Bch Bass Filter
Bch Line Output Terminal (4.5dB)
Bch Output Terminal (0dB)
Pop Noise Reduction Filter
f or Surround ON/OFF Control
Pop Noise Reduction Filter
f or Treble Control
Pop Noise Reduction Filter
f or Bass Control
Pop Noise Reduction Filter
f or BBE ON/OFF Control
Ref erence Voltage Terminal
Pow er Supply Terminal
- 2-
NJW1144
s
ABSOLUTE MAXIMUM RATING
(Ta=25°C)
PARAMETER
SYMBOL
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
V
+
RATING
14
700
-20 to +75
-40 to +125
UNIT
V
mW
°C
°C
P
D
Topr
Tstg
s
ELECTRICAL CHARACTERISTICS
( Ta=25°C, V =9V, Rg=600Ω, R
L
=47kΩ, Vin=100mVrms/1kHz)
PARAMETER
Operating Voltage
Supply Current
Reference Voltage
Maximum Input Voltage
Maximum Output Voltage1
Maximum Output Voltage2
MON OUT Gain
LINEOUT Gain
Maximum Gain
Minimum Gain
Channel Balance
Balance Level A-A
Balance Level A-B
Balance Level B-B
Balance Level B-A
Total Harmonic Distortion
Input Selector Cross Talk
Channel Separation
Output Noise 1
Output Noise 2
Output Noise 3
Output Noise 4
SYMBOL
V
+
+
TEST CONDITION
MIN.
8.0
TYP.
9.0
13
4.5
3.0
2.5
2.5
-2.0
4.5
0.0
-
0.0
0.0
-
0.0
-
-
-
-
-90
(31.6)
-106
(5.0)
-85
(56.2)
-101
(8.9)
MAX.
13.0
25
5.0
-
-
-
-
6.5
2.0
-70
1.5
2.0
-70
2.0
-70
0.5
-70
-70
-85
(56.2)
-96
(15.8)
-80
(100)
-91
(28.2)
UNIT
V
mA
V
Vrms
Vrms
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
dB
dB
dBV
(µVrms)
dBV
(µVrms)
dBV
(µVrms)
dBV
(µVrms)
I
CC
V
REF
V
IM
V
OM1
V
OM2
G
VMON
G
VLINE
G
VMAX
G
VMIN
G
CB
BAL
AA
BAL
AB
BAL
BB
BAL
BA
THD
CT
CS
V
NO1
V
NO2
V
NO3
V
NO4
No Signal
No Signal
VOL=-20dB, THD=1%
OUTPUT
VOL=0dB, THD=1%
LINEOUT
VOL=0dB, THD=1%
MON OUT
LINEOUT, VOL=0dB
VOL=0dB
VOL=Mute, Vin=1Vrms
BW=400Hz to 30kHz
VOL=0dB
CHS=”0”,BAL=”11111”
CHS=”1”,BAL=”11111”
Vin = 1Vrms
BW=400Hz to 30kHz
CHS=”1”,BAL=”11111”
CHS=”0”,BAL=”11111”
Vin = 1Vrms
BW=400Hz to 30kHz
Vo=0.5Vrms
BW=400Hz to 30kHz
Vin=1Vrms
BW=400Hz to 30kHz
Vin=1Vrms
BW=400Hz to 30kHz
VOL=0dB
BW=400Hz to 30kHz
VOL=Mute
BW=400Hz to 30kHz
LINEOUT, VOL=0dB
BW=400Hz to 30kHz
LINEOUT, VOL=Mute
BW=400Hz to 30kHz
-
4.0
2.8
-
-
-
2.5
-2.0
-
-1.5
-2.0
-
-2.0
-
-
-
-
-
-
-
-
-
-
-
-
-3-
NJW1144
s
ELECTRICAL CHARACTERISTICS
( Ta=25°C, V =9V, Rg=600Ω, R
L
=47kΩ, Vin=100mVrms/1kHz)
q
TONE CONTROL
(Tone Control-ON)
PARAMETER
High Frequency Boost
High Frequency Flat
High Frequency Cut
Low Frequency Boost
Low Frequency Flat
Low Frequency Cut
SYMBOL
HF
BST
HF
FLT
HF
CUT
LF
BST
LF
FLT
LF
CUT
TEST CONDITION
TREBLE=+15dB, f=10kHz
TRBE=0dB, f=10kHz
TREBLE=-15dB, f=10kHz
BASS=+15dB, f=100Hz
BASS=0dB, f=100Hz
BASS=-15dB, f=100Hz
MIN.
12.5
-2.0
-17.5
12.5
-2.0
-17.5
TYP.
15.0
0.0
-15.0
15.0
0.0
-15.0
MAX.
17.5
2.0
-12.5
17.5
2.0
-12.5
UNIT
dB
dB
dB
dB
dB
dB
+
q
SUB-TONE CONTROL
(Sub-Tone Control-ON)
PARAMETER
High Frequency Boost
High Frequency Flat
High Frequency Cut
Low Frequency Boost
Low Frequency Flat
Low Frequency Cut
q
AGC
(AGC-ON)
PARAMETER
AGC BOOST
AGC FLAT 1
AGC FLAT 2
AGC FLAT 3
AGC FLAT 4
AGC CUT
q
BBE
(BBE-ON)
PARAMETER
BBE Low Frequency
Boost Level
BBE High Frequency
Boost Level
SYMBOL
BBE
LOW
BBE
HIGH
TEST CONDITION
BBE-Low=+15dB
BBE-High=+15dB
MIN.
-
-
TYP.
15.0
15.0
MAX.
-
-
UNIT
dB
dB
SYMBOL
AGC
BST
AGC
FLT1
AGC
FLT2
AGC
FLT3
AGC
FLT4
AGC
CUT
TEST CONDITION
Vin=50mVrms
Vin=300mVrms
Vin=400mVrms
Vin=500mVrms
Vin=600mVrms
Vin=2Vrms
MIN.
1.5
-2.5
-2.5
-2.5
-2.5
-14
TYP.
3.5
0.0
0.0
0.0
0.0
-10
MAX.
5.5
2.5
2.5
2.5
2.5
-6.0
UNIT
dB
dB
dB
dB
dB
dB
SYMBOL
SHF
BST
SHF
FLT
SHF
CUT
SLF
BST
SLF
FLT
SLF
CUT
TEST CONDITION
SUB-TREBLE=+3dB,
f=10kHz
SUB-TREBLE=0dB,
f=10kHz
SUB-TREBLE=-3dB,
f=10kHz
SUB-BASS=+3dB,
f=100Hz
SUB-BASS=0dB,
f=100Hz
SUB-BASS=-3dB,
f=100Hz
MIN.
2.0
-2.0
-4.0
2.0
-2.0
-4.0
TYP.
3.0
0.0
-3.0
3.0
0.0
-3.0
MAX.
4.0
2.0
-2.0
4.0
2.0
-2.0
UNIT
dB
dB
dB
dB
dB
dB
- 4-
NJW1144
s
ELECTRICAL CHARACTERISTICS
( Ta=25°C, V =9V, Rg=600Ω, R
L
=47kΩ, Vin=100mVrms)
q
SIMULATED SURROUND
PARAMETER
SURROUND SIM A
SURROUND SIM B
q
SRS 3D-Stereo
SRS GAIN HIGH 1
SRS GAIN HIGH 2
SRS GAIN LOW 1
SRS GAIN LOW 2
SRS GAIN HIGH 3
SRS GAIN HIGH 4
(Simulated Surround-ON, f=1kHz)
SYMBOL
SR
SIMA
SR
SIMB
TEST CONDITION
Ain+Bin
→
Aout
Ain+Bin
→
Bout
MIN.
1.0
1.0
TYP.
3.0
3.0
MAX.
5.0
5.0
UNIT
dB
dB
+
(SRS 3D Stereo-ON, f=125Hz)
SYMBOL
SRS
GH1
SRS
GH2
SRS
GL1
SRS
GL2
SRS
GH3
SRS
GH4
TEST CONDITION
Ain
→
Aout, Mode=High
Bin
→
Bout, Mode=High
Ain
→
Aout, Mode=Low
Bin
→
Bout, Mode=Low
Bin
→
Aout, Mode=High
Ain
→
Bout, Mode=High
MIN.
10.0
10.0
7.0
7.0
6.8
6.8
TYP.
12.0
12.0
9.0
9.0
8.8
8.8
MAX.
14.0
14.0
11.0
11.0
10.8
10.8
UNIT
dB
dB
dB
dB
dB
dB
PARAMETER
-5-
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