JRC NJW1142 User Manual
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查询NJW1142供应商
AUDIO PROCESSOR
■■■■ GENERAL DESCRIPTION ■■■■ PACKAGE OUTLINE
The NJW1142 is a sound processor includes all of the
functions required to proc ess the audio signal for TV, such
as tone control, balance, volume, mute, and AGC functions.
Also the NJW1142 performs eala (NJRC Original
Surround) which is regenerated 3D surround sound with
only two speakers.
All of the internal status and variables are controlled by I
BUS interface.
■■■■ FEATURES
● Operating Voltage 8 to 10V
● Internal 4 Input Audio Selectors and Monitor Output
● Low Noise VCA
● eala (NJRC Original Surround System)
● Simulated Stereo
● Variable AGC Compression Level via I
2
C (4-levels)
● Bi-CMOS Technology
● Package Outline SDMP30
■■■■BLOCK DIAGRAM
MONa
AGC
IN1a
IN2a
IN3a
IN4a
SEL TONE VOL2
VOL1
AGC
IN1b
IN2b
IN3b
IN4b
SEL
-2dB
-2dB
VOL1
MONb
2
eala
&
Simulated
Stereo
C
TONE
-Ha
TONE VOL2
TONE
-Hb
NJW1142M
TONE
-La
TONE
-Lb
OUTa
OUTb
NJW1142
PRELIMINAR
I2 C BUS
Int erf ace
+4.5dB
Bias
+4.5dB
Vref
SDA
SCL
CVA
CVB
CTH
CTL
GND
Vcc
-1
NJW1142
■■■■ PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
IN1a
IN2a
IN3a
IN4a
MONa
SS FIL
TONE - Ha
TONE - La
LINEa
OUTa
CVa
CVb
SDA
SCL
GND
IN1b
IN2b
IN3b
IN4b
MONb
SR FIL
TONE - Hb
TONE - Lb
LINEb
OUTb
AGC
CTH
CTL
Vref
V+
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
16
No. Symbol Function Symbol Function
1 IN1a Ach Input1 16 V+ Power Supply Pin
2 IN2a
3 IN3a
4 IN4a
5 MONa Ach Monitor Output 20 AGC AGC Filter
6 SS FIL Surround Filter 21 OUTb Bch Output
7 TONE-Ha Ach Treble Filter 22 LINEb Bch LINE Output(+4.5dB)
8 TONE-La Ach Bass Filter 23 TONE-Lb Bch Bass Filter
9 LINEa Ach LINE Output(+4.5dB) 24 TONE-Hb Bch Treble Filter
10 OUTa Ach Output 25 SR FIL Surround Filter
11 CVA DAC Output for Ach Volume & Balance 26 MONb Bch Monitor Output
12 CVB DAC Output for Bch Volu me & Balance 27 IN4b
13 S DA SDA Data Input (I2C BUS) 28 IN3b
14 SCL SCL Data Input (I2C BUS) 29 IN2b
15 GND GND 30 IN1b
Ach Input2
Ach Input3
Ach Input4
17 Vref Reference Voltage
18 CTL DAC Output for Tone Low Frequency
19 CTH DAC Output for Tone High Frequency
Bch Input4
Bch Input3
Bch Input2
Bch Input1
- 2 -
NJW1142
■■■■ ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER SYMBOL RATING UNIT
Supply Voltage V+ 12 V
Power Dissipation PD 700 mW
Operating Temperature Range Topr -20 to +75
Storage Temperature Range Tstg -40 to +125
■■■■ ELECTRICAL CHARACTERISTICS ( Ta= 25 °C, V
+
=9V, Rg=600Ω, RL=47kΩ, Vin=100mVrms/1kHz)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Voltage V+ 8.0 9.0 10.0 V
Supply Current ICC No Signal - 30 50 mA
Reference Voltage V
No Signal 4.0 4.5 5.0 V
REF
Maximum Input Voltage VIM VOL=-20dB, THD=3% 2.8 3.0 - Vrms
Maximum Output Voltage1 V
Maximum Output Voltage2 V
MON OUT Gain G
LINEOUT Gain G
Maximum Gain G
Minimum Gain G
OM1
OM2
VMON
VLINE
VMAX
VMIN
VOL=0dB, THD=1%
LINEOUT
VOL=0dB, THD=1%
MON OUT - -2.0 - dB
LINEOUT, VOL=0dB 2.5 4.5 6.5 dB
VOL=0dB -2.0 0.0 2.0 dB
VOL=Mute, Vin=1Vrms
BW=400Hz to 30kHz
OUTPUT
- 2.5 - Vrms
- 2.5 - Vrms
- - -70 dB
Channel Balance GCB VOL=0dB -1.5 0.0 1.5 dB
Balance Boost A BA
Balance Cut A BA
Balance Boost B BB
Balance Cut B BB
Total Harmonic Distortion THD
Input Selector Cross Talk CT
Channel Separation CS
Output Noise 1 V
Output Noise 2 V
Output Noise 3 V
Output Noise 4 V
CHS=”0”,BAL=”11111” -2.0 0.0 2.0 dB
BST
CUT
BST
CUT
Vin = 1Vrms
CHS=”1”,BAL=”11111” -2.0 0.0 2.0 dB
CHS=”0”,BAL=”11111”
Vin = 1Vrms
CHS=”1”,BAL=”11111”
Vo=0.5Vrms
BW=400Hz to 30kHz
Vin=1Vrms
BW=400Hz to 30kHz
Vin=1Vrms
BW=400Hz to 30kHz
VOL=0dB
NO1
NO2
NO3
NO4
BW=400Hz to 30kHz
VOL=Mute
BW=400Hz to 30kHz
LINEOUT, VOL=0dB
BW=400Hz to 30kHz
LINEOUT, VOL=Mute
BW=400Hz to 30kHz
- - -70 dB
- - -70 dB
- - 0.5 %
- - -70 dB
- - -70 dB
-
-
-
-
-
-
-
-
-90
(31.6)
-106
(5.0)
-85
(56.2)
-101
(8.9)
-85
(56.2)
-96
(15.8)
-80
(100)
-91
(28.2)
°C
°C
dBV
(µVrms)
dBV
(µVrms)
dBV
(µVrms)
dBV
(µVrms)
-3 -
NJW1142
■■■■ ELECTRICAL CHARACTERISTICS ( Ta= 25 °C, V+=9V, Rg=600Ω, RL=47kΩ, Vin=100mVrms/1kHz)
●●●● TONE CONTROL (Tone Control-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
High Frequency Boost HF
High Frequency Flat HF
High Frequency Cut HF
Low Frequency Boost LF
Low Frequency Flat LF
Low Frequency Cut LF
TREBLE=+15dB, f=10kHz 12.5 15.0 17.5 dB
BST
TRBE=0dB, f=10kHz -2.0 0.0 2.0 dB
FLT
TREBLE=-15dB, f=10kHz -17.5 -15.0 -12.5 dB
CUT
BASS=+15dB, f=100Hz 12.5 15.0 17.5 dB
BST
BASS=0dB, f=100Hz -2.0 0.0 2.0 dB
FLT
BASS=-15dB, f=100Hz -17.5 -15.0 -12.5 dB
CUT
●●●● SUB-TONE CONTROL (Sub-Tone Control-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
High Frequency Boost SHF
High Frequency Flat SHF
High Frequency Cut SHF
Low Frequency Boost SLF
Low Frequency Flat SLF
Low Frequency Cut SLF
BST
FLT
CUT
BST
FLT
CUT
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
●●●● AGC (AGC-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
2.0 3.0 4.0 dB
-2.0 0.0 2.0 dB
-4.0 -3.0 -2.0 dB
2.0 3.0 4.0 dB
-2.0 0.0 2.0 dB
-4.0 -3.0 -2.0 dB
AGC BOOST AGC
AGC FLAT 1 AGC
AGC FLAT 2 AGC
AGC FLAT 3 AGC
AGC FLAT 4 AGC
AGC CUT AGC
●●●●SURROUND (SURROUND-ON)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Simulated Stereo A SR
Simulated Stereo B SR
Surround 3D1 SR
Surround 3D2 SR
Surround 3D3 SR
Vin=50mVrms 1.5
BST
Vin=300mVrms -2.5 0.0 2.5 dB
FLT1
Vin=400mVrms -2.5 0.0 2.5 dB
FLT2
Vin=500mVrms -2.5 0.0 2.5 dB
FLT3
Vin=600mVrms -2.5 0.0 2.5 dB
FLT4
Vin=2Vrms -14 -10 -6.0 dB
CUT
Ain+Bin → Aout, f=1kHz 1.0 3.0 5.0 dB
SIMA
Ain+Bin → Bout, f=1kHz 1.0 3.0 5.0 dB
SIMB
Ain → Aout, f=100Hz 8.0 10.0 12.0 dB
3D1
Ain → Aout, f=10kHz -2.0 0.0 2.0 dB
3D2
Ain → Bout, f=100Hz 4.5 6.5 8.5 dB
3D3
3.5 5.5
dB
- 4 -
■■■■ APPLICATION CIRCUIT
0.1µF
0.1µF
+
+
+
0.1µF
0.1µF
+
+
4.7µF
22nF
2.2nF
100nF
4.7µF
+
4.7µF
+
1µF
+
1µF
+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
IN1a
IN2a
IN3a
IN4a
MONa
SS FIL
TONE - Ha
TONE - La
LINE a
OUTa
CVa
CVb
SDA
SCL
GND
IN1b
IN2b
IN3b
IN4b
MONb
SR FIL
TONE - Hb
TONE - Lb
LINE b
OUTb
AGC
CTH
CTL
Vref
V+
NJW1142
0.1µF
0.1µF
0.1µF
0.1µF
4.7µF
22nF
2.2nF
100nF
4.7µF
4.7µF
0.33µF
1µF
1µF
1µF
22µF
+
30
+
29
+
28
27
26
+
+
+
25
24
23
22
+
21
+
20
19
+
18
+
17
16
16
+
-5 -
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