NJW1142A
-1
–
AUDIO PROCESSOR
!
GENERAL DESCRIPTION
!
PACKAGE OUTLINE
The NJW1142A 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 NJW1142A performs NJRC Surround "eala"
which is regenerated 3D surround sound with only two
speakers.
All of the internal status and variables are controlled by I
2
C
BUS interface.
!
FEATU RES
h Operating Voltage 8 to 10V
h Internal 4 Input Audio Selectors and Monitor Output
hLow Noise VCA
hNJRC Surround "eala"
hSimulated Stereo
hVariable AGC Compression Level via I
2
C (4-levels)
hBi-CMOS Technology
hPackage Outline SSOP32
!
BLOCK DIAGRAM
NJW1142AV
Bias
AGC
CVA
CVB
CTH
CTL
GND
Vcc
Vref
TONE
-Ha
TONE
-Hb
TONE
-La
TONE
-Lb
OUTb
SDA
SCL
SEL
SEL
TONE
VOL2
AGC
TONE
VOL2
VOL1
VOL1
IN1a
IN2a
IN3a
IN4a
IN1b
IN2b
IN3b
IN4b
0dB
0dB
+4.5dB
+4.5dB
MONa
MONb
OUTa
NJRC
Surroun d
“eala”
&
Simu lated
Stereo
CSR
I
2
C BUS
Interface
NJW1142A
- 2 -
!
PIN CONFIGURATION
No. Symbol Function Symbol Function
1 IN1a Ach Input 1 17 NC No Connect
2 IN2a
Ach Input 2
18 V+ Power Supply Treminal
3 IN3a
Ach Input 3
19 Vref Reference Voltage
4 IN4a
Ach Input 4
20 CTL Pop Noise reduction for Bass Control
5 MONa Ach Monitor Output 21 CTH Pop Noise reduction for Treble Control
6 SR FIL Surround Filter 22 AGC AGC Filter
7 TONE-Ha Ach Treble Filter 23 OUTb Bch Output
8 TONE-La Ach Bass Filter 24 LINEb Bch LINE Output (+4.5dB)
9 LINEa Ach LINE Output (+4.5dB) 25 TONE-Lb Bch Bass Filter
10 OUTa Ach Output 26 TONE-Hb Bch Treble Filter
11 CVA Pop Noise Reduction for Ach Volume & Balance 27 CSR Pop Noise Reduction for Surround Control
12 CVB Pop Noise Reduction for Bch Volume & Balance 28 MONb Bch Monitor Output
13 SDA SDA Data Input (I
2
C BUS) 29 IN4b
Bch Input 4
14 SCL SCL Clock Input (I
2
C BUS) 30 IN3b
Bch Input 3
15 GND GND Terminal 31 IN2b
Bch Input 2
16 NC No Connect 32 IN1b
Bch Input 1
16
32
31
30
29
28
27
26
25
24
23
20
21
22
19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
IN1a
IN2a
IN3a
IN4a
IN1b
IN2b
IN3b
IN4b
MONa MONb
TONE-Ha TONE-Hb
TONE-La
LINEa
TONE-Lb
LINEb
OUTa OUTb
CVb CTH
CTL
SDA
SCL
GND
Vref
V+
AGC
CVa
CSR
SR FIL
18
16 NC NC 17
NJW1142A
-3-
!
ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER SYMBOL RATING UNIT
Supply Voltage V
+
12 V
Power Dissipation P
D
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
!
ELECTRICAL CHARACTERISTICS ( Ta=25°C, V
+
=9V, Rg=600Ω, R
L
=47kΩ, Vin=100mVrms/1kHz)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Voltage V
+
8.0 9.0 10.0 V
Supply Current I
CC
No Signal - 10.0 25.0 mA
Reference Voltage V
REF
No Signal 4.0 4.5 5.0 V
Maximum Input Voltage V
IM
VOL=-20dB, THD=3% 2.8 3.0 - Vrms
Maximum Output Voltage1 V
OM1
OUTPUT
VOL=0dB, THD=1% - 2.5 - Vrms
Maximum Output Voltage2 V
OM2
LINEOUT
VOL=0dB, THD=1% - 2.5 - Vrms
MON OUT Gain G
VMON
MON OUT -1.0 0.0 1.0 dB
LINEOUT Gain G
VLINE
LINEOUT, VOL=0dB 2.5 4.5 6.5 dB
Maximum Gain G
VMAX
VOL=0dB -2.0 0.0 2.0 dB
Minimum Gain G
VMIN
VOL=Mute, Vin=1Vrms
BW=400Hz to 30kHz - - -70 dB
Channel Balance G
CB
VOL=0dB -1.5 0.0 1.5 dB
Balance Level A-A BAL
AA
CHS=”0”,BAL=”11111” -2.0 0.0 2.0 dB
Balance Level A-B BAL
AB
CHS=”1”,BAL=”11111”
Vin = 1Vrms
BW=400Hz to 30kHz
- - -70 dB
Balance Level B-B BAL
BB
CHS=”1”,BAL=”11111” -2.0 0.0 2.0 dB
Balance Level B-A BAL
BA
CHS=”0”,BAL=”11111”
Vin = 1Vrms
BW=400Hz to 30kHz
- - -70 dB
Total Harmonic Distortion THD Vo=0.5Vrms
BW=400Hz to 30kHz - - 0.5 %
Input Selector Cross Talk CT Vin=1Vrms
BW=400Hz to 30kHz - - -70 dB
Channel Separation CS Vin=1Vrms
BW=400Hz to 30kHz - - -70 dB
Output Noise 1 V
NO1
VOL=0dB
BW=400Hz to 30kHz
-
-
-90
(31.6)
-85
(56.2)
dBV
(µVrms)
Output Noise 2 V
NO2
VOL=Mute
BW=400Hz to 30kHz
-
-
-106
(5.0)
-96
(15.8)
dBV
(µVrms)
Output Noise 3 V
NO3
LINEOUT, VOL=0dB
BW=400Hz to 30kHz
-
-
-85
(56.2)
-80
(100)
dBV
(µVrms)
Output Noise 4 V
NO4
LINEOUT, VOL=Mute
BW=400Hz to 30kHz
-
-
-101
(8.9)
-91
(28.2)
dBV
(µVrms)
NJW1142A
- 4 -
!
ELECTRICAL CHARACTERISTICS ( Ta=25°C, V
+
=9V, Rg=600Ω, R
L
=47kΩ, Vin=100mVrms/1kHz)
hTONE CONTROL (Tone Control-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
High Frequency Boost HF
BST
TREBLE=+15dB, f=10kHz 12.5 15.0 17.5 dB
High Frequency Flat HF
FLT
TRBE=0dB, f=10kHz -2.0 0.0 2.0 dB
High Frequency Cut HF
CUT
TREBLE=-15dB, f=10kHz -17.5 -15.0 -12.5 dB
Low Frequency Boost LF
BST
BASS=+15dB, f=100Hz 12.5 15.0 17.5 dB
Low Frequency Flat LF
FLT
BASS=0dB, f=100Hz -2.0 0.0 2.0 dB
Low Frequency Cut LF
CUT
BASS=-15dB, f=100Hz -17.5 -15.0 -12.5 dB
hAGC (AGC-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
AGC BOOST AGC
BST
Vin=50mVrms 1.5 3.5 5.5 dB
AGC FLAT 1 AGC
FLT1
Vin=300mVrms -2.5 0.0 2.5 dB
AGC FLAT 2 AGC
FLT2
Vin=400mVrms -2.5 0.0 2.5 dB
AGC FLAT 3 AGC
FLT3
Vin=500mVrms -2.5 0.0 2.5 dB
AGC FLAT 4 AGC
FLT4
Vin=600mVrms -2.5 0.0 2.5 dB
AGC CUT AGC
CUT
Vin=2Vrms -14 -10 -6.0 dB
hSURROUND (SURROUND-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Simulated Stereo A SR
SIMA
Ain+Bin → Aout, f=1kHz 1.0 3.0 5.0 dB
Simulated Stereo B SR
SIMB
Ain+Bin → Bout, f=1kHz 1.0 3.0 5.0 dB
Surround 3D1 SR
3D1
Ain → Aout, f=100Hz 8.0 10.0 12.0 dB
Surround 3D2 SR
3D2
Ain → Aout, f=10kHz -2.0 0.0 2.0 dB
Surround 3D3 SR
3D3
Ain → Bout, f=100Hz 4.5 6.5 8.5 dB
NJW1142A
-5-
!
TIMING ON THE I
2
C BUS (SDA,SCL)
!CHARACTERISTICS OF I/O STAGES FOR I
2
C BUS (SDA,SCL)
I
2
C BUS Load Conditions
STANDARD MODE : Pull up resistance 4kΩ (Connected to +5V), Load capacitance 200pF (Connected to GND)
FAST MODE : Pull up resistance 4k
Ω
(Connected to +5V), Load capacitance 50pF (Connected to GND)
Standard mode Fast mode
PARAMETER SYMBOL
MIN. TYP. MAX. MIN. TYP. MAX.
UNIT
Low Level Input Voltage V
IL
0.0 - 1.5 0.0 - 1.5 V
High Level Input Voltage V
IH
2.7 - 5.0 2.7 - 5.0 V
Low level output voltage (3mA at SDA pin) V
OL
0 - 0.4 0 - 0.4 V
Input current each I/O pin with an input voltage
between 0.1V
DD
and 0.9V
DDmax
I
i
-10 - 10 -10 - 10 µA
SDA
SCL
t
f
t
HD:STA
t
LOW
t
r
t
HD:DAT
t
HIGH
t
f
t
SU:DAT
S
t
SU:STA
t
HD:STA
t
SP
t
SU:STO
Sr
t
r
t
BUF
PS
NJW1142A
- 6 -
!CHARACTERISTICS OF BUS LINES (SDA ,SCL) FOR I
2
C-BUS DEVICES
Standard mode Fast mode
PARAMETER SYMBOL
MIN. TYP. MAX. MIN. TYP. MAX.
UNIT
SCL clock frequency f
SCL
- - 100 - - 400 kHz
Hold time (repeated) START condition. t
HD:STA
4.0 - - 0.6 - - µs
Low period of the SCL clock t
LOW
4.7 - - 1.3 - - µs
High period of the SCL clock t
HIGH
4.0 - - 0.6 - - µs
Set-up time for a repeated START condition t
SU:STA
4.7 - - 0.6 - - µs
Data hold time
NOTE)
t
HD:DAT
0 - - 0 - - µs
Data set-up time t
SU:DAT
250 - - 100 - - ns
Rise time of both SDA and SCL signals t
r
- - 1000 - - 300 ns
Fall time of both SDA and SCL signals t
f
- - 300 - - 300 ns
Set-up time for STOP condition t
SU:STO
4.0 - - 0.6 - - µs
Bus free time between a STOP and START condition t
BUF
4.7 - - 1.3 - - µs
Capacitive load for each bus line C
b
- - 400 - - 400 pF
Noise margin at the Low level V
nL
0.5 - - 0.5 - - V
Noise margin at the High level
V
nH
1 - - 1 - -
V
C
b
; total capacitance of one bus line in pF.
NOTE). Data hold time : t
HD:DAT
Please hold the Data Hold Time (t
HD:DAT
) to 300ns or more to avoid status of unstable at SCL falling edge.
The SDA block in the NJW1142A does not hold data. Add external data-delay-circuit of the SDA terminal, in case of not
providing a hold time of at least 300nsec for the SDA in the master device.
The time-consists of the data-delay-circuit of the SDA terminal are as follows.
(a) Low level ! High level : T
LH
≈ R
P
*C
D
(b) High level ! Low level : T
HL
≈ R
D
*C
D
In addition, Schottky barrier diode (SBD) influences a Low level at the Acknowledge. Therefore choose the low forward
voltage (Vf) as much as possible.
MA STER
SCL
SDA
V
DD
R
P
R
P
R
D
SBD
C
D
NJW1142A
NJW1142A
-7-
!
TERMINAL DESCRIPTION
No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE
1
2
3
4
29
30
31
32
IN1a
IN2a
IN3a
IN4a
IN4b
IN3b
IN2b
IN1b
Ach Input 1
Ach Input 2
Ach Input 3
Ach Input 4
Bch Input 4
Bch Input 3
Bch Input 2
Bch Input 1
V+/2
5
9
10
23
24
28
MONa
LINEa
OUTa
OUTb
LINEb
MONb
Ach Monitor Output (0dB)
Ach LINE Output (4.5dB)
Ach Output (0dB)
Bch Output (0dB)
Bch LINE Output (4.5dB)
Bch Monitor Output (0dB)
V+/2
6 SR FIL Surround Filter
V+/2
7
26
TONE-Ha
TONE-Hb
Ach Treble Filter
Bch Treble Filter
V+/2
8
25
TONE-La
TONE-Lb
Ach Bass Filter
Bch Bass Filter
V+/2
20k
80k
50
FB
12k
FB
12k
8k:eala
24k:simlated
SR FIL
FB
TONE Ha
TONE Hb
20k
FB
NJW1142A
- 8 -
SDA
SCL 4k
!
TERMINAL DESCRIPTION
No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE
22 AGC AGC Filter
0.6V
11
12
CVa
CVb
Pop Noise Reduction for Ach
Volume & Balance
Pop Noise Reduction for Bch
Volume & Balance
V+/2 - 0.7V
13
14
SDA
SCL
SDA Data Input (I
2
C BUS)
SCL Clock Input (I
2
C BUS)
-
15 GND GND Terminal
0V
18 V+ Power Supply Terminal
V+
19 Vref Reference Voltage
V+/2
400
400
12k
8k
VREFIN
212k
212k
212k
NJW1142A
-9-
!
TERMINAL DESCRIPTION
No. SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE
20
21
CTL
CTH
Pop Noise reduction
for Bass Control
Pop Noise reduction
for Treble Control
V+/2 - 0.7V
27 CSR Pop Noise Reduction
for Surround Control
0.6V
36k
CSR
32k
NJW1142A
- 10 -
!
APPLICATION CIRCUIT
(NOTE)
1. Separate the I
2
C bus line from the following terminals for avoiding digital noise problem.
Pin No. Symbol Pin No. Symbol Pin No. Symbol
6 SS FIL 8 TONE-La 26 TONE-Hb
7 TONE-Ha 25 TONE-Lb - -
16
32
31
30
29
28
27
26
25
24
23
20
21
22
19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
4.7µF
4.7µF
2.2nF
100nF
2.2nF
100nF
4.7µF
4.7µF
4.7µF
1µF
IN1a
IN2a
IN3a
IN4a
IN1b
IN2b
IN3b
IN4b
MONa MONb
TONE - Ha TONE - Hb
TONE - La
LINEa
TONE - Lb
LINEb
OUTa OUTb
CVb
1µF
1µF
CTH
CTL
SDA
SCL
GND
Vref
V+
22µF
1µF
4.7µF
1µF
AGC
CVa
0.33µF
CSR
SR FIL
18
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
22nF
1µF
16
16 NC NC 17
NJW1142A
-11-
!
DEFINITION OF I
2
C REGISTER
♦
♦♦
♦ I
2
C BUS FORMAT
MSB LSB MSB LSB MSB LSB
S Slave Address A Select Address A Data A P
1bit 8bit 1bit 8bit 1bit 8bit 1bit 1bit
S: Starting Term
A: Acknowledge Bit
P: Ending Term
♦
♦♦
♦ SLAVE ADDRESS
MSB LSB
1 0 0 0 0 0 1 R/W
R/W=0: Write mode for register setting
R/W=1: Not available
♦
♦♦
♦ CONTROL REGISTER TABLE
The select address sets each function (Volume, Balance, AGC, Surround, Tone Control, AUX).
The auto increment function cycles the select address as follows.
00H
→
01H
→
02H
→
03H
→
04H
→
05H
→
00H
BIT
Select
Address
D7 D6 D5 D4 D3 D2 D1 D0
00H
VOL
01H
CHS BAL SUR1 SUR0
02H
BCB BASS BCSB SUB-BASS
03H
BCT TREB BCST SUB-TREB
04H
Don’t Care
05H
OUT SEL AGC1 AGC0 AGC
Don’t Care
♦
♦♦
♦ CONTROL REGISTER DEFAULT VALUE
Control register default value is all “0”.
BIT
Select
Address
D7 D6 D5 D4 D3 D2 D1 D0
00H
0 0 0 0 0 0 0 0
01H
0 0 0 0 0 0 0 0
02H
0 0 0 0 0 0 0 0
03H
0 0 0 0 0 0 0 0
04H
0 0 0 0 0 0 0 0
05H
0 0 0 0 0 0 0 0
NJW1142A
- 12 -
■
■■
■ I
2
C CONTROL COMMAND DESCRIPTION
hMASTER VOLUME CONTROL
BIT
Select
Address D7 D6 D5 D4 D3 D2 D1 D0
00H VOL
The volume control for both Ach and Bch (0.33dB/step).
The volume is consisted of volume1 and volume2 and the level is divided into half to each volume1 and
volume2.
hBALANCE, AGC AND SURROUND SETTING
BIT
Select
Address D7 D6 D5 D4 D3 D2 D1 D0
01H CHS BAL SR1 SR0
•
CHS: Channel select for balance control
“0”: Ach “Bch is attenuated”
“1”: Bch “Ach is attenuated”
•
BAL: Balance control for both Ach and Bch (1dB/Step)
The balance is consisted of volume1 and volume2 and the level is divided into half to each volume1 and
volume2.
•”SR1”, “SR0”: Surround Mode select
Surround Mode
SR1
(D1)
SR0
(D0)
Surround Off (Bypass) 0 0
Simulated Stereo 0 1
eala effect large 1 0
eala effect small 1 1
hTONE CONTROL BA SS SETTING
BIT
Select
Address D7 D6 D5 D4 D3 D2 D1 D0
02H BCB BASS BCSB SUB-BASS
•
BCB: Boost cut select for Bass control
“0”: Cut
“1”: Boost
•
BASS: BASS control
Cut Level: -15dB to 0dB (1dB/Step)
Boost Level: 0dB to +15dB (1dB/Step)
•
BCSB: Boost cut select for SUB-BASS control
“0”: Cut
“1”: Boost
•
SUB-BASS: SUB- BASS control (1dB/Step)
Sub-Cut Level: -3dB to 0dB (1dB/Step)
Sub-Boost Level: 0dB to +3dB (1dB/Step)
NJW1142A
-13-
hTONE CONTROL TREBLE SE TTING
BIT
Select
Address D7 D6 D5 D4 D3 D2 D1 D0
03H BCT TREB BCST SUB-TREB
•
BCT: Boost cut select for Treble control
“0”: Cut
“1”: Boost
•
TREB: Treble control (1dB/step)
Cut Level: -15dB to 0dB (1dB/Step)
Boost Level: 0dB to +15dB (1dB/Step)
•
BCST: Boost cut select for Sub-Treble control
“0”: Cut
“1”: Boost
•
SUB-TREB: Sub-Treble control (1dB/step)
Sub-Cut Level: -3dB to 0dB (1dB/Step)
Sub-Boost Level: 0dB to +3dB (1dB/Step)
hOUTPUT AND AUXILIARY SETTING
BIT
Select
Address D7 D6 D5 D4 D3 D2 D1 D0
05H OUT SEL AGC1 AGC0 AGC
Don’t Care
•
OUT: ON/OFF Switch for OUTPUT
“0”: OFF (MUTE)
“1”: ON
•
SEL: Input Selector
SEL
Input Select D6 D5 D4
IN1a and IN1b 0 1 0
IN2a and IN2b 0 1 1
IN3a and IN3b 1 0 0
IN4a and IN4b 1 0 1
•
AGC1: AGC Level Setting
AGC Level AGC1
(D3)
AGC0
(D2)
AGC
(D1)
AGC Flat 1 (300mVrms) 0 0 1
AGC Flat 2 (400mVrms) 0 1 1
AGC Flat 3 (500mVrms) 1 0 1
AGC Flat 4 (600mVrms) 1 1 1
AGC Off ✳ ✳ 0
✳ Don’t Care
NJW1142A
- 14 -
!MASTER VOLUME (Select Address: 00H)
VOL
Gain (dB) HEX D7 D6 D5 D4 D3 D2 D1 D0
0 FF 1 1 1 1 1 1 1 1
-1 FC 1 1 1 1 1 1 0 0
-2 F9 1 1 1 1 1 0 0 1
-3 F6 1 1 1 1 0 1 1 0
-4 F3 1 1 1 1 0 0 1 1
-5 F0 1 1 1 1 0 0 0 0
-6 ED 1 1 1 0 1 1 0 1
-7 EA 1 1 1 0 1 0 1 0
-8 E7 1 1 1 0 0 1 1 1
-9 E4 1 1 1 0 0 1 0 0
-10 E1 1 1 1 0 0 0 0 1
-11 DE 1 1 0 1 1 1 1 0
-12 DB 1 1 0 1 1 0 1 1
-13 D8 1 1 0 1 1 0 0 0
-14 D5 1 1 0 1 0 1 0 1
-15 D2 1 1 0 1 0 0 1 0
-16 CF 1 1 0 0 1 1 1 1
-17 CC 1 1 0 0 1 1 0 0
-18 C9 1 1 0 0 1 0 0 1
-19 C6 1 1 0 0 0 1 1 0
-20 C3 1 1 0 0 0 0 1 1
-21 C0 1 1 0 0 0 0 0 0
-22 BD 1 0 1 1 1 1 0 1
-23 BA 1 0 1 1 1 0 1 0
-24 B7 1 0 1 1 0 1 1 1
-25 B4 1 0 1 1 0 1 0 0
-26 B1 1 0 1 1 0 0 0 1
-27 AE 1 0 1 0 1 1 1 0
-28 AB 1 0 1 0 1 0 1 1
-29 A8 1 0 1 0 1 0 0 0
-30 A5 1 0 1 0 0 1 0 1
-31 A2 1 0 1 0 0 0 1 0
-32 9F 1 0 0 1 1 1 1 1
-33 9C 1 0 0 1 1 1 0 0
-34 99 1 0 0 1 1 0 0 1
-35 96 1 0 0 1 0 1 1 0
-36 93 1 0 0 1 0 0 1 1
-37 90 1 0 0 1 0 0 0 0
-38 8D 1 0 0 0 1 1 0 1
-39 8A 1 0 0 0 1 0 1 0
-40 87 1 0 0 0 0 1 1 1
-41 84 1 0 0 0 0 1 0 0
-42 81 1 0 0 0 0 0 0 1
NJW1142A
-15-
!MAST ER VO LU ME (Cont ' d)
VOL
Gain (dB) HEX D7 D6 D5 D4 D3 D2 D1 D0
-43 7E 0 1 1 1 1 1 1 0
-44 7B 0 1 1 1 1 0 1 1
-45 78 0 1 1 1 1 0 0 0
-46 75 0 1 1 1 0 1 0 1
-47 72 0 1 1 1 0 0 1 0
-48 6F 0 1 1 0 1 1 1 1
-49 6C 0 1 1 0 1 1 0 0
-50 69 0 1 1 0 1 0 0 1
-51 66 0 1 1 0 0 1 1 0
-52 63 0 1 1 0 0 0 1 1
-53 60 0 1 1 0 0 0 0 0
-54 5D 0 1 0 1 1 1 0 1
-55 5A 0 1 0 1 1 0 1 0
-56 57 0 1 0 1 0 1 1 1
-57 54 0 1 0 1 0 1 0 0
-58 51 0 1 0 1 0 0 0 1
-59 4E 0 1 0 0 1 1 1 0
-60 4B 0 1 0 0 1 0 1 1
-61 48 0 1 0 0 1 0 0 0
-62 45 0 1 0 0 0 1 0 1
-63 42 0 1 0 0 0 0 1 0
-64 3F 0 0 1 1 1 1 1 1
-65 3C 0 0 1 1 1 1 0 0
-66 39 0 0 1 1 1 0 0 1
-67 36 0 0 1 1 0 1 1 0
-68 33 0 0 1 1 0 0 1 1
-69 30 0 0 1 1 0 0 0 0
-70 2D 0 0 1 0 1 1 0 1
-71 2A 0 0 1 0 1 0 1 0
-72 27 0 0 1 0 0 1 1 1
-73 24 0 0 1 0 0 1 0 0
-74 21 0 0 1 0 0 0 0 1
-75 1E 0 0 0 1 1 1 1 0
-76 1B 0 0 0 1 1 0 1 1
-77 18 0 0 0 1 1 0 0 0
-78 15 0 0 0 1 0 1 0 1
-79 12 0 0 0 1 0 0 1 0
-80 0F 0 0 0 0 1 1 1 1
-81 0C 0 0 0 0 1 1 0 0
-82 09 0 0 0 0 1 0 0 1
-83 06 0 0 0 0 0 1 1 0
-84 03 0 0 0 0 0 0 1 1
Mute 00 0 0 0 0 0 0 0 0
NJW1142A
- 16 -
!
!!
!BALANCE (Select Address: 01H)
Channel
Select (CHS) D7
Ach (Bch is attenuated) 0
Bch (Ach is attenuated) 1
BAL
Gain (dB) D6 D5 D4 D3 D2
0 0 0 0 0 0
-1 0 0 0 0 1
-2 0 0 0 1 0
-3 0 0 0 1 1
-4 0 0 1 0 0
-5 0 0 1 0 1
-6 0 0 1 1 0
-7 0 0 1 1 1
-8 0 1 0 0 0
-9 0 1 0 0 1
-10 0 1 0 1 0
-11 0 1 0 1 1
-12 0 1 1 0 0
-13 0 1 1 0 1
-14 0 1 1 1 0
-15 0 1 1 1 1
-16 1 0 0 0 0
-17 1 0 0 0 1
-18 1 0 0 1 0
-19 1 0 0 1 1
-20 1 0 1 0 0
-21 1 0 1 0 1
-22 1 0 1 1 0
-23 1 0 1 1 1
-24 1 1 0 0 0
-25 1 1 0 0 1
-26 1 1 0 1 0
-27 1 1 0 1 1
-28 1 1 1 0 0
-29 1 1 1 0 1
-30 1 1 1 1 0
Mute 1 1 1 1 1
NJW1142A
-17-
!TONE CONTROL BASS (Select Address: 02H)
BCB
Bass
Cut or Boost D7
Cut 0
Boost 1
BASS
Cut Gain
(dB) Boost Gain
(dB) D6 D5 D4 D3
-15 15 1 1 1 1
-14 14 1 1 1 0
-13 13 1 1 0 1
-12 12 1 1 0 0
-11 11 1 0 1 1
-10 10 1 0 1 0
-9 9 1 0 0 1
-8 8 1 0 0 0
-7 7 0 1 1 1
-6 6 0 1 1 0
-5 5 0 1 0 1
-4 4 0 1 0 0
-3 3 0 0 1 1
-2 2 0 0 1 0
-1 1 0 0 0 1
0 0 0 0 0 0
!TONE CONTROL SUB-BASS (Select Address: 02H)
BCSB Sub-Bass
Cut or Boost D2
Cut 0
Boost 1
SUB-BASS
Cut Gain
(dB) Boost Gain
(dB) D1 D0
-3 3 1 1
-2 2 1 0
-1 1 0 1
0 0 0 0
NJW1142A
- 18 -
!
TONE CONTROL TREBLE (Select Address: 03H)
BCT Treble
Cut or Boost D7
Cut 0
Boost 1
TREB
Cut Gain
(dB) Boost Gain
(dB) D6 D5 D4 D3
-15 15 1 1 1 1
-14 14 1 1 1 0
-13 13 1 1 0 1
-12 12 1 1 0 0
-11 11 1 0 1 1
-10 10 1 0 1 0
-9 9 1 0 0 1
-8 8 1 0 0 0
-7 7 0 1 1 1
-6 6 0 1 1 0
-5 5 0 1 0 1
-4 4 0 1 0 0
-3 3 0 0 1 1
-2 2 0 0 1 0
-1 1 0 0 0 1
0 0 0 0 0 0
!
TONE CONTROL SUB-TREBLE (Select Address: 03H)
BCST Sub-Treble
Cut or Boost D2
Cut 0
Boost 1
SUB-TREB
Cut Gain
(dB) Boost Gain
(dB) D1 D1
-3 3 1 1
-2 2 1 0
-1 1 0 1
0 0 0 0
NJW1142A
-19-
!
TYPICAL CHARA CTERISTICS
-100
-80
-60
-40
-20
0
-80-70-60-50-40-30-20-100
Gain vs Volume Control
Gain [dB]
Volume Control [dB]
V+=9V, Vin(Ach)=1Vrms,f=1kHz,
OUTPUT,Rg=600Ω
MUTE
75,25,-20
o
C
-120
-110
-100
-90
-80
-70
-60
-80-70-60-50-40-30-20-100
Output Noise vs Volume Control
Gain [dB]
Volume Control [dB]
V+=9V, OUTPUT,BW=400-30kHz
Rg=600Ω, Ta=25
o
C
MUTE -120
-100
-80
-60
-40
050100
Output Noise vs Temperature
Output Noise [dBV]
Temparature [
o
C]
V+=9V, Rg=600Ω, BW=400Hz-30kHz
Vol=0dB
Vol=MUTE
-100
-80
-60
-40
-20
0
-30 -20 -10 0 10 20 30
Gain vs B a lan ce Co n tro l
Gain [dB]
Balance Control [dB]
V+=9V, Vin=1Vrms, f=1kHz, Rg=600
Ω
Vo(Ach)
75, 25, -20
o
C
Vo(Bch)
75, 25, -20
o
C
MUTE -30 -20 -10 0 -10 -20 -30 MUTE
0
2
4
6
8
10
024681012
S up ply Curren t vs Su pply Voltag e
Supply Current [mA]
Supply Voltage [V]
Ta=25
o
C
4
5
6
7
8
9
10
0 50 100
Su pp ly Current vs T emparature
Supply Current [mA]
Temparature [
o
C]
V+=9V
NJW1142A
- 20 -
!
TYPICAL CHARA CTERISTICS
0.01
0.1
1
10
100
0.01 0.1 1
THD+N vs Input Voltage
THD+N [ % ]
Input Voltage [Vrms]
V+=9V, Vin(Ach), f=1kHz, Vo(Ach)OUTPU
T
Rg=600Ω, BW=400Hz-30kHz, Vol=-20dB
75
o
C
-20
o
C
25
o
C
0.01
0.1
1
10
100
0.01 0.1 1
THD+N vs Input Voltage
THD+N [ % ]
Input Voltage [Vrms]
V+=9V, Vin(Ach), f=1kHz, Vo(Ach)OUTPU
T
Rg=600Ω, BW=400Hz-30kHz, Ta=25
o
C
0dB
-30dB
-20dB
-10dB
0.01
0.1
1
10
100
0.01 0.1 1
THD+N vs Output Voltage
THD+N [ % ]
Output Voltage [Vrms]
V+=9V, Vin(Ach), f=1kHz, Vo(Ach)OUTPUT
BW=400Hz-30kHz, Rg=600Ω, Ta=25
o
C
0dB
-30dB
-20dB -10dB
0.01
0.1
1
10
100
0.01 0.1 1
THD+N vs Output Voltage
THD+N [ % ]
Output Voltage [Vrms]
V+=9V, Vin(Ach), f=1kHz, Vo(Ach)OUTPU
T
Rg=600Ω, BW=400Hz-30kHz, Vol=0dB
75
o
C
-20
o
C
25
o
C
0
20
40
60
80
100
120
100 1000 10
4
M UT E L evel vs Frequ ency
MUTE Level [d B]
Frequency [Hz]
V+=9V, Vin(Ach)=1Vrms, Vol=MUTE
Vo(Ach)OUTPUT, Rg=600
Ω
, Ta=25
o
C
0
20
40
60
80
100
100 1000 10
4
Channel Separation vs Frequency
Channel Separation [dB]
Freqency [Hz]
V+=9V, Vin=1Vrms, f=1kHz, Vo=OUTPUT
Rg=600
Ω
, Vol=0dB, Ta=25
o
C
Vin(Ach)-Vo(Bch)
Vin(Bch)-Vo(Ach)
NJW1142A
-21-
!
TYPICAL CHARA CTERISTICS
-20
-10
0
10
20
100 1000 10
4
Gain vs Frequency (TONE)
Gain [dB]
Frequency [Hz]
V+=9V, Vin(Ach)=0.1Vrms,Gv:3dB steps
Vo(Ach), Rg=600Ω, Ta=25
o
C
0.001
0.01
0.1
1
0.001 0.01 0.1 1
AGC Control
Output Voltage [Vrms]
Input Voltage [Vrms]
V+=9V, Vin(Ach+Bch), f=1kHz, Vo(Ach)OUTPUT
Rg=600
Ω
, Ta=25
o
C
300mV
400mV
500mV
600mV
OFF
-2
-1
0
1
2
0246810
AG C Attack T ime (C:20pin =0.33
µ
µµ
µ
F)
Output Voltage [V]
Time [ms]
V+=9V, Vin(Ach+Bch)=1Vrms,f=20kHz,Vo(Ach)OUTPUT
AGC level=0.3V,Rg=600
Ω,
Ta=25
o
C
-0.2
-0.1
0
0.1
0.2
0 100 200 300 400 500
AG C Reco very T ime (C:20pin = 0.33
µ
µµ
µ
F)
Output Voltage [V]
Time [ms]
V+=9V, Vin(Ach+Bch)=1Vrms, f=10kHz,Vo(Ach)OUTPUT
AGC level=0.3V,Rg=600
Ω
,Ta=25
o
C
-20
-10
0
10
20
100 1000 10
4
Gain vs Frequency (eala&Simulated)
Gain [dB]
Frequency [Hz]
V+=9V, Vin=0.1Vrms,OUTPUT, Rg=600Ω,
Ta=25
o
C
eala
AIN-AOUT
eala
AIN-BOUT
Simulated
(A+B)IN-AOUT
-100
-50
0
50
100
150
200
100 1000 10
4
Phase vs Frequency (Simulated)
Phase [deg]
Frequency [Hz]
V+=9V, Vin(A+Bch)=0.1Vrms, Rg=600Ω,
Ta=25
o
C
BchOUT
AchOUT
NJW1142A
- 22 -
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
