NJW1132
PRELIMINARY
SOUND PROCESSOR with SOUND ENHANCEMENT
GENERAL DESCRIPTION
nnnn
NJW1132
The
is a sound processor with sound
enhancement (BBE). It includes all of functions processing
audio signal for TV, such as tone control, bal ance, volume,
mute, and AGC functions.
Also the
NJW1132
performs surround and sound
enhancement. The sound enhancement regenerates high
definitive and nearly real sound.
All of internal status and variables are controlled by I
2
C BUS
interface.
FEATURES
nnnn
l
l Operating Voltage (8 to 13V)
ll
2
l
lI
C BUS Interface
ll
l
lBBE Sound Enhancem ent (Low Boost and High Boost: 15dB max. )
ll
l
l The AGC circuit reduces volume difference among input sources.
ll
l
l Matrix Surround
ll
l
l Bi-CMOS Technology
ll
l
l Package Outline SDIP30,SDMP30
ll
BLOCK DIAGRAM
nnnn
PACKAGE OUTLINE
nnnn
NJW1132M
NJW1132L
INPUT
INPUT
AGC
Volume
1
Volume
1
BBE
BBE
Tone
Tone
Surround
Volume
2
Volume
2
OUTPUT
OUTPUT
Control
Logic
Bias
Vref
AUX0
AUX1
SDA
SCL
GND
VCC
- 1 -
NJW1132
y
y
PIN FUNCTION
nnnn
Ach Input
Ach BBE Filter1
Ach BBE Filter2
Ach BBE Output
Ach Tone Input
Ach High Frequenc
Ach Low Frequenc
Ach Output (0dB)
AGC1
AGC2
DAC Output
for Bch Volume & Balance
INa
1 30
BBE1a
2
BBE2a
3
BBEout_a
4
5
6
7
8
9
10
11
Tone_INa
TONE-Ha
TONE-La
OUTa
AGC1
AGC2
CVB
BBEout_b
INb
BBE1b
BBE2b
Tone_INb
TONE-Hb
TONE-Lb
OUTb
PS
VREF
CTH
Bch Input
Bch BBE Filter1
29
Bch BBE Filter2
28
Bch BBE Output
27
Bch Tone Input
26
Bch High Frequency
25
Bch Low Frequency
24
Bch Output(0dB)
23
Phase Shift
22
Reference Voltage
21
DAC Output
20
for Tone High Frequency
DAC Output
for Ach Volume & Balance
2
I
C BUS SDA
2
I
C BUS SCL
GND
12
13
14
15
CVA
SDA
SCL
GND
SDIP30, SDMP30
CTL
AUX0
AUX1
Vcc
DAC Output
19
for Tone Low Frequency
AUX Output0
18
AUX Output1
17
Power Supply
16
- 2 -
ABSOLUTE MAXIMUM RATING (Ta=25°C)
nnnn
PARAMETER SYMBOL RATING UNIT
Supply Voltage V
Power Dissipation P
+
700 mW
D
14 V
Operating Temperature Range Topr -20 to +75 °C
Storage Temperature Range Tstg -40 to +125 °C
NJW1132
ELECTRICAL CHARACTERISTICS ( Ta=25°C, V+=9V, Rg=600
nnnn
PARAMETER
SYM
BOL
TEST CONDITION MIN. TYP. MAX. UNIT
=47k
, R
WWWW
L
, Vin=100mVrms/1kHz)
WWWW
Operating Voltage V+ 8.0 9.0 13.0 V
Supply Current I
Reference Voltage V
CC
REF
Maximum Input Voltage V
Maximum Output Voltage V
OM1
Channel Balance G
Balance Boost A BA
Balance Cut A BA
Balance Boost B BB
Balance Cut B BB
Total Harmonic Distortion THD
No Signal - 30 50 mA
No Signal 4.0 4.5 5.0 V
VOL=C3H,THD=1% 2.6 2.8 - Vrms
IM
OUTPUT
VOL=FFH,THD=1%
VOL=FFH -1.5 0.0 1.5 dB
CB
BAL=”00000” -2.0 0.0 2.0 dB
BST
BAL=”11111” - - -70 dB
CUT
BAL=”00000” -2.0 0.0 2.0 dB
BST
BAL=”11111” - - -70 dB
CUT
Vo=0.5Vrms
BW=400Hz to 30kHz
-2.5-Vrms
--0.5%
Mute Level MUTE VOL=00H - - -70 dB
Channel Separation CS Vin=2Vrms - - -70 dB
Output Noise 1 V
Output Noise 2 V
NO1
NO2
VOL=FFH
BW=400Hz to 30kHz
VOL=00H
BW=400Hz to 30kHz
-
-
-
-
-
-
-90
(31.6)
-60
(1.0)
-82
(79.4)
(mVrms)
(uVrms)
dBV
dBV
- 3 -
Loading...