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PDF NJW1141 Data sheet ( Hoja de datos )
| Número de pieza | NJW1141 | |
| Descripción | AUDIO PROCESSOR | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJW1141
AUDIO PROCESSOR
s GENERAL DESCRIPTION
s PACKAGE OUTLINE
The NJW1141 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.
All of the internal status and variables are controlled by
I2C BUS interface.
s FEATURES
q Operating Voltage
8 to 10V
q I2C BUS Interface
q Internal 4 Input Audio Selectors and Monitor Output
q Low Noise VCA
q Variable AGC Compression Level via I2C (4-levels)
q Bi-CMOS Technology
q Package Outline
SDIP30, SDMP30
NJW1141L
NJW1141M
sBLOCK DIAGRAM
MONa AGC
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TONE TONE
-Ha -La
OUTa
IN1a
IN2a
IN3a
IN4a
IN1b
IN2b
IN3b
IN4b
SEL
AGC
SEL
M ONb
VOL1
TONE
VOL2
VOL1
TONE
VOL2
TONE TONE
-Hb -Lb
OUTb
I2C BUS
Interface
SDA
SCL
CVA
CVB
CTH
CTL
Bias
Vref
GND
Vcc
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NJW1141
et4U.com
s I2C 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
SYMBOL
VIH
VIL
IIH
IIL
VOL
IOL
fSCL
tBUF
tHD:STA
tLOW
tHIGH
tSU:STA
tHD:DAT
tSU:DAT
tR
tF
tSU:STO
MIN.
3.0
0
-
-
0
-3.0
-
4.7
4.0
4.7
4.0
4.7
0
250
-
-
4.0
I2C BUS Load Condition:Pull up resistance 4kΩDa(tCaoSnhneeectt4eUd.ctoom+5V)
Load capacitance 200pF (Connected to GND)
TYP.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
MAX.
5.0
1.5
10
10
0.4
-
100
-
-
-
-
-
3.45
-
1.0
300
-
UNIT
V
V
µA
µA
V
mA
kHz
µs
µs
µs
µs
µs
µs
ns
µs
ns
µs
DataShee
SDA
tBUF
SCL
tR
tHD:STA tLOW
PS
tF
tHD:DAT
tHIGH
tSU:DAT
tHD:STA
tSU:STA
Sr
tSU:STO
P
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NJW1141
qTONE CONTROL TREBLE SETTING
Select
BIT
Address
D7
D6
D5
D4
D3
03H BCT
TREB
D2
BCST
•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)
qOUTPUT AND AUXILIARY SETTING
Select
Address
D7
D6
D5
05H OUT
SEL
BIT
D4 D3
AGC1
D2
AGC0
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•OUT: ON/OFF Switch for OUTPUT
“0”: OFF (MUTE)
“1”: ON
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•SEL: Input Selector
Input Select
IN1a and IN1b
IN2a and IN2b
IN3a and IN3b
IN4a and IN4b
SEL
D6 D5 D4
010
011
100
101
• AGC1: AGC Level Setting
AGC Level
300mVrms
400mVrms
500mVrms
600mVrms
AGC Off
✳ Don’t Care
AGC1
(D3)
0
0
1
1
✳
AGC0
(D2)
0
1
0
1
✳
AGC
(D1)
1
1
1
1
0
D1 D0
SUB-TREB
D1
AGC
D0
Don’t Care
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| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet NJW1141.PDF ] | |
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