NJW1142
AUDIO PROCESSOR
s
GENERAL DESCRIPTION
s
PACKAGE OUTLINE
The
NJW1142
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
NJW1142
performs NJRC Surround "eala" which
is regenerated 3D surround sound with only two speakers.
2
All of the internal status and variables are controlled by I C
BUS interface.
NJW1142L
NJW1142M
s
FEATURES
q
Operating Voltage
8 to 10V
q
Internal 4 Input Audio Selectors and Monitor Output
q
Low Noise VCA
q
NJRC Surround "eala"
q
Simulated Stereo
2
q
Variable AGC Compression Level via I C (4-levels)
q
Bi-CMOS Technology
q
Package Outline
SDIP30, SDMP30
s
BLOCK DIAGRAM
MONa
AGC
TONE TONE
-Ha
-La
OUTa
-2dB
+4.5dB
SDA
SCL
CVA
CVB
CTH
CTL
CSR
IN1a
IN2a
IN3a
IN4a
SEL
VOL1
NJRC
Suuround
“eala”
&
Sim ulated
Stereo
VOL1
-2dB
TONE
VOL2
I2C BUS
Interface
AGC
IN1b
IN2b
IN3b
IN4b
SEL
TONE
VOL2
Bias
GND
Vcc
+4.5dB
MONb
TONETONE
-Hb -Lb
OUTb
Vref
-1–
NJW1142
s
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
IN1a
IN2a
IN3a
IN4a
MONa
SR FIL
TONE -Ha
TONE -La
LINEa
OUTa
CVa
CVb
SDA
SCL
GND
IN1b 30
IN2b 29
IN3b 28
IN4b 27
MONb 26
CSR
25
TONE -Hb 24
TONE -Lb 23
LINEb 22
OUTb 21
AGC 20
CTH 19
CTL 18
Vref
V+
17
16
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Symbol
IN1a
IN2a
IN3a
IN4a
MONa
SR FIL
TONE-Ha
TONE-La
LINEa
OUTa
CVA
CVB
SDA
SCL
GND
Ach Input 1
Ach Input 2
Ach Input 3
Ach Input 4
Ach Monitor Output
Surround Filter
Ach Treble Filter
Ach Bass Filter
Function
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Symbol
V+
Vref
CTL
CTH
AGC
OUTb
LINEb
TONE-Lb
TONE-Hb
CSR
MONb
IN4b
IN3b
IN2b
IN1b
Function
Power Supply Treminal
Reference Voltage
Pop Noise reduction for Bass Control
Pop Noise reduction for Treble Control
AGC Filter
Bch Output
Bch LINE Output (+4.5dB)
Bch Bass Filter
Bch Treble Filter
Pop Noise Reduction for Surround Control
Bch Monitor Output
Bch Input 4
Bch Input 3
Bch Input 2
Bch Input 1
Ach LINE Output (+4.5dB)
Ach Output
Pop Noise Reduction for Ach Volume & Balance
Pop Noise Reduction for Bch Volume & Balance
SDA Data Input (I C BUS)
SCL Clock Input (I
2
C BUS)
GND Terminal
2
-2-
NJW1142
s
ABSOLUTE MAXIMUM RATING
(Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
+
RATING
12
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 Boost A
Balance Cut A
Balance Boost B
Balance Cut B
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
10.0
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.
10.0
25.0
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
BA
BST
BA
CUT
BB
BST
BB
CUT
THD
CT
CS
V
NO1
V
NO2
V
NO3
V
NO4
No Signal
No Signal
VOL=-20dB, THD=3%
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-
NJW1142
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
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
q
AGC
(AGC-ON)
PARAMETER
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
AGC BOOST
AGC FLAT 1
AGC FLAT 2
AGC FLAT 3
AGC FLAT 4
AGC CUT
q
SURROUND
(SURROUND-ON)
PARAMETER
Simulated Stereo A
Simulated Stereo B
Surround 3D1
Surround 3D2
Surround 3D3
SYMBOL
SR
SIMA
SR
SIMB
SR
3D1
SR
3D2
SR
3D3
TEST CONDITION
Ain+Bin
→
Aout, f=1kHz
Ain+Bin
→
Bout, f=1kHz
Ain
→
Aout, f=100Hz
Ain
→
Aout, f=10kHz
Ain
→
Bout, f=100Hz
MIN.
1.0
1.0
8.0
-2.0
4.5
TYP.
3.0
3.0
10.0
0.0
6.5
MAX.
5.0
5.0
12.0
2.0
8.5
UNIT
dB
dB
dB
dB
dB
-4-
NJW1142
s
I C BUS BLOCK CHARACTERISTICS (SDA,SCL)
PARAMETER
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Low Level Output Voltage (3mA at SDA pin)
Maximum Output Current
Maximum Clock Frequency
Data Change Minimum Waiting Time
Data Transfer Start Minimum Waiting Time
Low Level Clock Pulse Width
High Level Clock Pulse Width
Minimum Start Preparation Waiting Time
Minimum Data Hold Time
Minimum Data Preparation Time
Rise Time
Fall Time
Minimum Stop Preparation Waiting Time
2
2
SYMBOL
V
IH
V
IL
I
IH
I
IL
V
OL
I
OL
f
SCL
t
BUF
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
t
R
t
F
t
SU:STO
MIN.
3.0
0
-
-
0
-3.0
-
4.7
4.0
4.7
4.0
4.7
5.0
250
-
-
4.0
TYP.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
MAX.
5.0
1.5
10
10
0.4
-
100
-
-
-
-
-
-
-
1.0
300
-
UNIT
V
V
µA
µA
V
mA
kHz
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
I C BUS Load Condition: Pull up resistance 4kΩ (Connected to +5V)
Load capacitance 200pF (Connected to GND)
SDA
t
BUF
t
R
t
F
t
HD:STA
SCL
t
HD:STA
t
LOW
P
S
t
HD:DAT
t
HIGH
t
SU:DAT
Sr
t
SU:STA
t
SU:STO
P
-5-
模拟与混合信号
