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PDF NJW1139A Data sheet ( Hoja de datos )
| Número de pieza | NJW1139A | |
| Descripción | Audio Processor | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJW1139A
AUDIO PROCESSOR with Sound Enhancement and TruSurround
s GENERAL DESCRIPTION
The NJW1139A is a sound processor with BBE sound
enhancement and TruSurround virtualizer.
It includes all of functions processing audio signal for TV,
such as tone control, balance, volume, mute, simulated
stereo and AGC functions.
All of internal status and variables are controlled by I2C
BUS interface.
s PACKAGE OUTLINE
s FEATURES
q Operating Voltage
q I2C BUS Interface
8 to 13V
q Bass Boost Function
Adjustable bass boost level
0 to +13dB
q AGC Circuit (It reduces volume difference among input sources)
Adjustable compression level by I2C BUS
q BBE Sound Enhancement System
q TruSurround / SRS 3D Stereo / Simulated Stereo
q Bi-CMOS Technology
q Package Outline
SOP40-K1
NJW1139AGK1
s BLOCK DIAGRAM
AGC
LF1 LF2 LF3
IN a VOL1
AGC
VOL1
Bass
Boost
Bass
Le ve l
IN b VOL1
BBE1a
BBE2aT-OHNaE
TONE
-La
OUTa
Tr uSurr ound
&
SRS 3D
Stereo
&
Sim ulated
Stereo
BBE
BBE
TONE
TONE
VOL2
I2C BUS
Interface
VOL2
Bias
SDA
SCL
CVA
CVB
CLB
CTH
CTL
CBH
CBL
CSR
GND
Vcc
BBE1b BBE2b TONETONE OUTb
-Hb -Lb
Vref
-1-B
1 page  
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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 4kΩ (Connected to +5V)
Load capacitance 200pF (Connected to GND)
NJW1139A
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
SDA
tBUF
SCL
tR
tHD:STA tLOW
PS
tF
tHD:DAT
tHIGH
tSU:DAT
tHD:STA
tSU:STA
Sr
tSU:STO
P
-5-
5 Page 
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!TERMINAL DESCRIPTION
No. SYMBOL
FUNCTION
NJW1139A
EQUIVALENT CIRCUIT
VOLTAGE
18 SDA
19 SCL
SDA Data Input (I2C BUS)
SCL Data Input (I2C BUS)
-
12k
20 GND
GND Pin
21 VCC
Voltage Supply Pin
-
-
22 VREF
Reference Voltage
200k
V+/2
23 CTL
DAC Output for
24 CTH Tone Control(Treble and Bass)
36k
V+/2
- 11 -
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet NJW1139A.PDF ] | |
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