NJW1104
PPRELIMINARY
DOLBY PRO LOGIC SURROUND DECODER
n
GENERAL DESCRIPTION
The
NJW1104
is a surround processor including all of
the necessary circuits of Dolby Pro Logic Surround
decoder and digital delay.
In addition to Dolby Pro Logic Surround function, it
performs easily other surround function such as Hall, Live,
Disco and others.
n
PACKAGE OUTLINE
NJW1104FC2-80
Dolby and double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
San Francisco, CA94103-4813.USA.
This device is available only to licensees of Dolby Lab.
Licensing and application information may be obtained from Dolby Lab.
NJW1104FC2
n
FEATURES
l
Operating Voltage : V
CC
=10V(Analog Block), V
DD
=5V(Digital Block)
l
Digital Delay on chip
l
Serial Data Interface(3-wire)
DATA, REQ, SCK
l
Bi-CMOS Technology
l
Package Outline
QFP80, QFP100
n
FUNCTION
[Dolby Pro Logic Surround]
l
Automatic input balance
l
Noise sequencer
l
Adaptive matrix
l
Center channel control
(Wide band, Normal, Phantom, Off)
l
Modified B-type noise reduction
l
7kHz low-pass filter
l
Dolby 3 stereo mode
l
Digital time delay(15,20,25,30msec.)
n
SYSTEM BLOCK DIAGRAM
[Other Surround]
l
Surround Signal Selector
(L+R, L-R, EXTIN)
l
Front mixing control
l
Digital time delay
(15,20,25,30,40,50,60msec.)
[Other Function]
l
Digital auxiliary outputs
(AUX1-AUX10)
LIN
RIN
Input Autobalance
Noise Sequencer
Adaptive Matrix
L+R
L-R
Center Mode
LOUT
COUT
ROUT
Modified
B-NR
7KHz
LPF
EXTIN
Delay
SOUT
MCU Interface
SW. Controller
ADD/SUB
.
DATA
SCK
REQ
AUX1-10
MD2
MD1
Ver.1.0
-1-
NJW1104
n
ABSOLUTE MAXIMUM RATING (Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
*
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
CC
V
DD
P
D
T
opr
T
stg
RATING
13
6.5
(QFP80) 1.3
(QFP100) 1.3
-20 to +75
-40 to +125
UNIT
V
W
°C
°C
*On board
n
ELECTRICAL CHARACTERISTICS (V
CC
=10V, V
DD
=5V, Ta=25°C)
PARAMETER
u
OVERALL
Supply Voltage Range
Supply Current
Reference Voltage
Threshold Voltage
u
INPUT AUTO BALANCE
Capture Range
Error Correction
Output Level Accuracy
relative to Cch
Matrix Rejection relative
Headroom
Total Harmonic Distortion
Signal to Noise Ratio
u
NOISE SEQUENCER
Output Noise Level
Output Noise Level
Accuracy relative to Cch
u
MODIFIED B-TYPE NOISE REDUCTION (0dB=300mVrms, f=100Hz at Sin Sout)
Voltage Gain
Decode Responce1
Decode Responce2
Decode Responce3
Decode Responce4
Total Harmonic Distortion
Headroom
Signal to Noise Ratio
GV-NR
DEC1
DEC2
DEC3
DEC4
THDNR
HRNR
SNNR
Vin=0dBd,f=100Hz
Vin=0dBd,f=1kHz
Vin=-15dBd,f=1.4kHz
Vin=-20dBd,f=1.4kHz
Vin=-40dBd,f=5kHz
Vin=0dBd,f=1kHz
V
CC
=9V at THD=1%
Rg=0,weightted:CCIR/ARM
-
-1.6
-3.0
-4.9
-6.8
-
15
73
9.5
-0.1
-1.5
-3.4
-5.3
0.07
17
78
-
1.4
0.0
-1.9
-3.8
0.3
-
-
dB
dB
dB
dB
dB
%
dB
dB
Vno
DVno
L,R,S’ch.out
-15.0
-0.5
-12.5
0.0
-10.0
0.5
dB
dB
MR
HR-AM
THD-AM
SNAM
L,R,S’ch.out
V
CC
=9V at THD=1%
L,R,C,S’ch.out at 4ch.mode
L,R,ch.out at 2ch.mode
Rg=0,wt:CCIR-ARM at 4ch.mode
L,R,ch.out at 2ch.mode
25
15
-
-
75
93
40
17
0.05
0.002
80
100
-
-
0.2
0.1
-
-
dB
dB
%
%
dB
dB
CPR
CER
DVol
L,R,S’ch.out
-
-
-0.5
5
4
0
-
-
0.5
dB
V
CC
V
DD
I
CC
I
DD
V
REF
V
thh
V
thl
No Signal
No Signal
No Signal
Digital input high level
Digital input low level
9
4.5
-
-
3.6
0.7V
DD
0.0
10
5
37
6
4.0
-
-
13
5.5
50
10
4.4
V
DD
0.3V
DD
V
V
mA
mA
V
V
V
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
u
ADAPTIVE MATRIX (0dB=300mVrms, f=1kHz at Cin Cout)
Ver.1.0
-2-
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