NJW1137
P R E L I M I N A LY
AUDIO PROCESSOR with SOUND ENHANCEMENT
s
GENERAL DESCRIPTION
The
NJW1137
is an audio processor with sound
enhancement (BBE). It includes all of functions processing
audio signal for TV, such as tone control, balance, volume,
mute, NJRC original surround, and AGC functions.
The NJRC original surround system reproduces natural
surround sound and clear vocal orientation.
The sound enhancement regenerates high definitive and
nearly real sound.
2
All of internal status and variables are controlled by I C
BUS interface.
s
PACKAGE OUTLINE
NJW1137L
NJW1137M
s
FEATURES
8 to 13V
q
Operating Voltage
2
q
I C BUS Interface
q
BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
q
AGC Circuit (It reduces volume difference among input sources.)
q
eala(NJRC Original Surround)
q
Simulated Surround
q
Bi-CMOS Technology
SDIP30, SDMP30
q
Package Outline
s
BLOCK DIAGRAM
VOL1
BBE
TONE
VOL2
AGC
eala
&
Sim ulated
Surround
I2C Bus
Interface
VOL1
BBE
TONE
VOL2
Bias
- 1 –F
NJW1137
s
PIN FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
INa
BBE1a
BBE2a
BBEOUTa
TONE INa
TONE-Ha
TONE-La
OUTa
AGC
SS-FIL
CVB
CVA
SDA
SCL
GND
INb
BBE1b
BBE2b
BBEOUTb
TONE INb
TONE-Hb
TONE-Lb
OUTb
SR-FIL
VREF
CTH
CTL
AUX0
AUX1
Vcc
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Symbol
INa
BBE1a
BBE2a
BBE OUTa
TONE INa
TONE-Ha
TONE-La
OUTa
AGC
SS-FIL
CVB
CVA
SDA
SCL
GND
Ach Input
Function
Ach BBE Filter1 (Process)
Ach BBE Filter2 (Lo Contour)
Ach Output for the Other Accessories
Ach Input From the Other Accessories
Ach Treble Filter
Ach Bass Filter
Ach Output
AGC Filter
Simulated Stereo Filter
DAC Output for Bch Volume & Balance
DAC Output for Ach Volume & Balance
SDA Data Input (I
2
C BUS)
SCL Data Input (I
2
C BUS)
GND
No
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Symbol
Vcc
AUX1
AUX0
CTL
CTH
VREF
SR-FIL
OUTb
TONE-Lb
TONE-Hb
TONE INb
BBE OUTb
BBE2b
BBE1b
INb
Power Supply Pin
Auxiliary Output1
Auxiliary Output0
Function
DAC Output for Tone Low Frequency
DAC Output for Tone High Frequency
Reference Voltage
NJRC Original Surround Filter
Bch Output
Bch Bass Filter
Bch Treble Filter
Bch Input from the Other Accessories
Bch Output for the Other Accessories
Bch BBE Filter2 (Process)
Bch BBE Filter1 (Lo Contour)
Bch Input
-2-
NJW1137
s
ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
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 unless otherwise specified)
PARAMETER
Operating Voltage
Supply Current
Reference Voltage
Maximum Input Voltage
Maximum Output Voltage
Channel Balance
Balance Boost A
Balance Cut A
Balance Boost B
Balance Cut B
Total Harmonic Distortion
Maximum Gain
Minimum Gain
Channel Separation
Output Noise 1
Output Noise 2
SYMBOL
V
+
TEST CONDITION
MIN.
8.0
TYP.
9.0
13
4.5
3.0
2.5
0.0
0.0
-
0.0
-
-
0.0
-
-
-90
(31.6)
-106
(5.0)
-
-
MAX.
13.0
25
5.0
-
-
1.5
2.0
-70
2.0
-70
0.5
2.0
-70
-70
-85
(56.2)
-96
(15.8)
5.0
UNIT
V
mA
V
Vrms
Vrms
dB
dB
dB
dB
dB
%
dB
dB
dB
dBV
(µVrms)
dBV
(µVrms)
V
I
CC
V
REF
V
IM
V
OM
G
CB
BA
BST
BA
CUT
BB
BST
BB
CUT
THD
G
VMAX
G
VMIN
CS
V
NO1
V
NO2
V
AUX
No Signal
No Signal
VOL=-20dB,THD=1%
OUTPUT
VOL=0dB,THD=1%
VOL=0dB
CHS=”0”,BAL=”11111”
CHS=”1”,BAL=”11111”
Vin = 1Vrms
CHS=”1”,BAL=”11111”
CHS=”0”,BAL=”11111”
Vin = 1Vrms
Vo=0.5Vrms
BW=400Hz to 30kHz
VOL= 0dB
VOL= MUTE
Vin = 2Vrms
VOL = 0dB
BW=400Hz to 30kHz
VOL = MUTE
BW = 400Hz to 30kHz
Logic Output : High
-
4.0
2.8
-
-1.5
-2.0
-
-2.0
-
-
-2.0
-
-
-
-
-
-
4.5
0
AUX Output Voltage
Logic Output : Low
0.3
BW : Band Width
-3-
NJW1137
♦
TONE CONTROL
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
BCT=”1”,TREB=”1111”,
f=10kHz
TRBE=”0000”,f=10kHz
BCT=”0”,TRBE=”1111”,
f=10kHz
BCB=”1”,BASS=”1111”,
f=100Hz
BASS=”0000”,f=100Hz
BCB=”0”,BASS=”1111”,
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
♦
SUB-TONE CONTROL
PARAMETER
High Frequency Boost
High Frequency Cut
Low Frequency Boost
Low Frequency Cut
SYMBOL
SHF
BST
SHF
CUT
SLF
BST
SLF
CUT
TEST CONDITION
BCST=”1”,
SUB-TREB=”11”,f=10kHz
BCST=”0”,
SUB-TREB=”11”,f=10kHz
BCSB=”1”,
SUB-BASS=”11”,f=100Hz
BCSB=”0”,
SUB-BASS=”11”,f=100Hz
MIN.
2.0
-4.0
2.0
-4.0
TYP.
3.0
-3.0
3.0
-3.0
MAX.
4.0
-2.0
4.0
-2.0
UNIT
dB
dB
dB
dB
♦
AGC CONTROL(AGC-ON)
PARAMETER
AGC Boost
AGC Flat1
AGC Flat2
AGC Flat3
AGC Flat4
AGC Cut
SYMBOL
AGC
BST
AGC
FLT1
AGC
FLT2
AGC
FLT3
AGC
FLT4
AGC
CUT
TEST CONDITION
Vin=50mVrms, f=1kHz
Vin=150mVrms, f=1kHz
Vin=300mVrms, f=1kHz
Vin=400mVrms, f=1kHz
Vin=540mVrms, f=1kHz
Vin=2Vrms, f=1kHz
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
♦
BBE(BBE-ON)
PARAMETER
BBE Low Frequency
Boost Range
BBE High Frequency
Boost Range
SYMBOL
BBE
LOW
BBE
HIGH
TEST CONDITION
BBE-Low=”1111”, f = 50Hz
BBE-High=”1111”, f = 10KHz
MIN.
-
-
TYP.
15.0
15.0
MAX.
-
-
UNIT
dB
dB
-4-
NJW1137
♦
SURROUND (SURROUND-ON)
PARAMETER
Surround Gain1
Surround Gain2
Surround Gain3
Surround Gain4
Simulated Surround Gain1
Simulated Surround Gain2
SYMBOL
SR
GAIN1
SR
GAIN2
SR
GAIN3
SR
GAIN 4
SR
SIM1
SR
SIM2
TEST CONDITION
Ain→Aout, f=100Hz
SUR0=”0”, SUR=”1”
Ain→Bout, f=100Hz
SUR0=”0”, SUR=”1”
Ain→Aout, f=100Hz
SUR0=”1”, SUR=”1”
Ain→Bout, f=100Hz
SUR0=”1”, SUR=”1”
Ain+Bin→Aout, f=1kHz
SUR0=”1”, SUR=”0”
Ain+Bin→Bout, f=1kHz
SUR0=”1”, SUR=”0”
MIN.
6.0
1.6
10.7
8.4
1.0
1.0
TYP.
8.0
3.6
12.7
10.4
3.0
3.0
MAX.
10.0
5.6
14.7
12.4
5.0
5.0
UNIT
dB
dB
dB
dB
dB
dB
-5-
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