NJW1107
PRELIMINARY
Dolby Pro Logic Surround Decoder with Discrete 5.1ch Input
s
GENERAL DESCRIPTION
The
NJW1107
is a Dolby Pro Logic Surround Decoder with discrete
5.1ch input. It includes Dolby Pro Logic Surround decoder, 4 master
volumes, 4 level trimmers and 6 switches.
The 6 switches choose internal Dolby Pro Logic Surround Decoder
or discrete 5.1ch inputs. The
NJW1107
is most suitable for AV
amplifier with discrete 5.1ch inputs for Dolby Digital.
In addition to Dolby Pro Logic Surround function, the
NJW1107
performs easily other surround function such as Hall, Live, Disco and
others, and echo and microphone mixing functions for Karaoke.
s
PACKAGE OUTLINE
NJW1107FC3
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.
s
FEATURES
q
Operating Voltage: V
CC
=9V(Analog Block), V
DD
=5V(Digital Block)
q
Digital Delay on chip
q
Discrete 5.1ch Input for Dolby Digital
q
Master Volume for Center, Surround and Subwoofer Channel: -79 to 0dB/1dB step (0dB = Dolby Level)
q
Level Trimmer for Center, Surround and Subwoofer Channel: -31 to 0dB/1dB step (0dB = Dolby Level)
q
Karaoke function (Echo, MIC mixing)
q
Serial Data Interface (3-wire)
DATA, REQ, SCK
q
Bi-CMOS Technology
q
Package Outline
QFP80
s
FUNCTION
[Dolby Pro Logic Surround]
q
Automatic input balance
q
Noise sequencer
q
Adaptive matrix
q
Center mode control (Wide, Normal, Phantom, Off)
q
Modified B-type noise reduction
q
7kHz low pass filter
q
Dolby 3 stereo mode
q
Digital time delay (15.4, 20.5, 25.6, 29.2ms)
s
SYSTEM BLOCK DIAGRAM
[Other Surround]
q
Sound field control
q
Front mixing control
q
Digital time delay
(15.4, 20.5, 25.6, 29.2 51.2ms)
[Karaoke]
q
Echo control
q
MIC mixing
q
Digital time delay (123, 184ms)
MICIN
LTIN
RTIN
Pro Logic
Digital
Surround
Echo
Rear
Stereo
L
R
C
SL
SR
Master
Trimmer Vol
LOUT
ROUT
COUT
LIN
RIN
CIN
SLIN
SRIN
SWIN
normal
SWIN
SLOUT
SROUT
SWOUT
MCU
Interface
DATA
REQ
SCK
Dolby Pro Logic
Discr ete 5.1ch (ex. Dolby Digital)
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NJW1107
s
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
10.5
6.5
1.4
*
-20 to +75
-40 to +125
UNIT
V
W
°C
°C
*On board
s
ELECTRICAL CHARACTERISTICS (V
CC
=9V, V
DD
=5V, Ta=25°C, 0dBd=300mVrms, f=1kHz)
°
PARAMETER
x
OVERALL
Supply Voltage Range
Supply Current
Reference Voltage
Threshold Voltage
x
INPUT AUTO BALANCE
Capture Range
Error Correction
x
ADAPTIVE MATRIX
Output Level
Accuracy relative to Cch
Matrix Rejection relative
Headroom
Total Harmonic Distortion
Signal to Noise Ratio
x
NOISE SEQUENCER
Output Noise Level
Output Noise Level
Accuracy relative to Cch
x
MODIFIED B-TYPE NOISE REDUCTION (0dBd=300mVrms, f=100Hz at LSch out)
Voltage Gain
Decode Responce1
Decode Responce2
Decode Responce3
Total Harmonic Distortion
Headroom
Signal to Noise Ratio
x
Master Volume
Maximum attenuation
Minimum attenuation
Volume Step1
Volume Step2
Signal to Noise Ratio
ATT
max
ATT
min
VOLS1
VOLS2
SNVOL
ATT=-∞, Vi=2Vrms
ATT=0, TRIM=0dB
ATT=0 to -40dB, TRIM=0dB
ATT=-40 to
–79dB,
TRIM=0dB
ATT=-∞, CCIR/ARM
-
-3.0
0.5
0.2
85
-95
0
1.0
1.0
95
-87
3.0
1.5
1.8
-
dB
dB
dB
dB
dB
GV-NR
DEC1
DEC2
DEC3
THDNR
HRNR
SNNR
Vin=0dBd, f=100Hz
Vin=0dBd, f=1kHz
Vin=-15dBd, f=1.4kHz
Vin=-40dBd, f=5kHz
Vin=0dBd, f=1kHz, 30kHz LPF
THD=1%
Rg=0, wt CCIR/ARM
3.8
-1.6
-3.0
-6.8
-
15
68
6.8
-0.1
-1.5
-5.3
0.07
17
78
9.8
1.4
0
-3.8
0.3
-
-
dB
dB
dB
dB
%
dB
dB
Vno
∆Vno
L, R, C, LSch out
L, R, LSch out
-15
-0.5
-12.5
0
-10
0.5
dB
dB
MR
HR-AM
THD-AM
SNAM
L, R, C, LSch out
THD=1%
4ch.mode, 30kHz LPF
Rg=0, wt: CCIR/ARM, 4ch.mode
25
15
-
70
40
17
0.05
80
-
-
0.2
-
dB
dB
%
dB
∆Vol
L, R, LSch out
-0.5
0
0.5
dB
CPR
CER
-
-
5
4
-
-
dB
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
8
4.75
-
-
-
2.2
0
9
5
30
15
4.5
-
-
10
5.5
45
25
-
V
DD
0.8
V
V
mA
mA
V
V
V
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
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NJW1107
s
ELECTRICAL CHARACTERISTICS (V
CC
=9V, V
DD
=5V, Ta=25°C, 0dBd=300mVrms, f=1kHz)
°
PARAMETER
x
Trimmer
Maximum attenuation
Minimum attenuation
Trimmer Step
x
Line
Total Harmonic Distortion
Signal to Noise Ratio
Line Cross-talk
Input Impedance
x
DIGITAL TIME DELAY
Delay Time
Total Gain
Total Harmonic Distortion
Td
GvD
THDD
Td=20.5ms
DIN-DVOLOUT, DDVOL=0dB
30kHz LPF
Td=20.5ms
Td=51.2ms
Td=184ms
Maximum Output Voltage
Output Noise Voltage
VomaxD
NoD
THD=10%
Vin=0Vrms
JIS-A
LPF Cut-off Frequency
x
Feedback Volume
Maximum attenuation
Minimum attenuation
Volume Step
x
Delay Volume
Maximum attenuation
Minimum attenuation
Volume Step
DLATT
max
DLATT
min
DLVOLS
ATT=-∞dB
ATT=-3dB
-
-3.0
1.5
-70
0
3.0
-60
3.0
4.5
dB
dB
dB
FBATT
max
FBATT
min
FBVOLS
ATT=-∞dB
ATT=-3dB
-
-6.0
1.5
-70
-3.0
3.0
-60
0
4.5
dB
dB
dB
LPFfc
Td=20.5ms
Td=51.2ms
Td=184ms
Td=15.4 to 51.2ms, Gv=-3dB
Td=123, 184ms, Gv=-3dB
17.4
-3.0
-
-
-
0.7
-
-
-
6.0
-
20.5
0
0.5
1.2
3.0
1.0
-92
-84
-80
7.0
3.0
23.6
3.0
0.9
2.2
5.6
-
-80
-70
-65
8.0
-
ms
dB
%
%
%
Vrms
dBV
dBV
dBV
kHz
kHz
THDLN
SNLN
CTLN
Zi
30kHz LPF
DIN-AUDIO
-
95
70
11
0.002
100
80
22
0.05
-
-
44
%
dB
dB
kΩ
TRIM
max
TRIM
min
TRIMS
TRIM=-31dB, VOLATT=0dB
TRIM=0dB, VOLATT=0dB
VOLATT=0dB
-34
-3.0
0.6
-31
0
1.0
-28
3.0
1.4
dB
dB
dB
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
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