NJW1107
( 1 / 11 ) C
PRELIMINARY
Dolby Pro Logic Surround Decoder with Discrete 5.1ch Input
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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.
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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
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FUNCTION
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SYSTEM BLOCK DIAGRAM
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.
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PACKAGE OUTLINE
[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)
[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)
Trimmer
Master
Vol
Pro Logic
Echo
Digital
Surround
Rear
Stereo
MCU
Interface
SLOUT
SROUT
SWOUT
COUT
ROUT
LOUT
LIN
RIN
CIN
SLIN
SRIN
SWIN
normal
SWIN
LTIN
RTIN
MICIN
L
R
C
SL
SR
RE
Q
SC
K
DA
T
A
Dolby Pro Logic
Discrete 5.1ch (ex. Dolby Digital)
NJW1107
( 3 / 11 ) C
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ABSOLUTE MAXIMUM RATING (Ta=25
C)
PARAMETER
SYMBOL
RATING
UNIT
Supply Voltage
V
CC
V
DD
10.5
6.5
V
Power Dissipation
P
D
1.4
*
W
Operating Temperature Range
T
opr
-20 to +75
C
Storage Temperature Range
T
stg
-40 to +125
C
*On board
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ELECTRICAL CHARACTERISTICS (V
CC
=9V, V
DD
=5V, Ta=25
C, 0dBd=300mVrms, f=1kHz)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
x
OVERALL
Supply Voltage Range
V
CC
V
DD
8
4.75
9
5
10
5.5
V
V
Supply Current
I
CC
I
DD
No Signal
No Signal
-
-
30
15
45
25
mA
mA
Reference Voltage
V
REF
No Signal
-
4.5
-
V
Threshold Voltage
V
thh
V
thl
Digital input high level
Digital input low level
2.2
0
-
-
V
DD
0.8
V
V
x
INPUT AUTO BALANCE
Capture Range
CPR
-
5
-
dB
Error Correction
CER
-
4
-
dB
x
ADAPTIVE MATRIX
Output Level
Accuracy relative to Cch
Vol
L, R, LSch out
-0.5
0
0.5
dB
Matrix Rejection relative
MR
L, R, C, LSch out
25
40
-
dB
Headroom
HR-AM
THD=1%
15
17
-
dB
Total Harmonic Distortion
THD-AM
4ch.mode, 30kHz LPF
-
0.05
0.2
%
Signal to Noise Ratio
SNAM
Rg=0, wt: CCIR/ARM, 4ch.mode
70
80
-
dB
x
NOISE SEQUENCER
Output Noise Level
Vno
L, R, C, LSch out
-15
-12.5
-10
dB
Output Noise Level
Accuracy relative to Cch
Vno
L, R, LSch out
-0.5
0
0.5
dB
x
MODIFIED B-TYPE NOISE REDUCTION (0dBd=300mVrms, f=100Hz at LSch out)
Voltage Gain
GV-NR
Vin=0dBd, f=100Hz
3.8
6.8
9.8
dB
Decode Responce1
DEC1
Vin=0dBd, f=1kHz
-1.6
-0.1
1.4
dB
Decode Responce2
DEC2
Vin=-15dBd, f=1.4kHz
-3.0
-1.5
0
dB
Decode Responce3
DEC3
Vin=-40dBd, f=5kHz
-6.8
-5.3
-3.8
dB
Total Harmonic Distortion
THDNR
Vin=0dBd, f=1kHz, 30kHz LPF
-
0.07
0.3
%
Headroom
HRNR
THD=1%
15
17
-
dB
Signal to Noise Ratio
SNNR
Rg=0, wt CCIR/ARM
68
78
-
dB
x
Master Volume
Maximum attenuation
ATT
max
ATT=-
, Vi=2Vrms
-
-95
-87
dB
Minimum attenuation
ATT
min
ATT=0, TRIM=0dB
-3.0
0
3.0
dB
Volume Step1
VOLS1
ATT=0 to -40dB, TRIM=0dB
0.5
1.0
1.5
dB
Volume Step2
VOLS2
ATT=-40 to
79dB, TRIM=0dB
0.2
1.0
1.8
dB
Signal to Noise Ratio
SNVOL
ATT=-
, CCIR/ARM
85
95
-
dB
NJW1107
( 4 / 11 ) C
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ELECTRICAL CHARACTERISTICS (V
CC
=9V, V
DD
=5V, Ta=25
C, 0dBd=300mVrms, f=1kHz)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
x
Trimmer
Maximum attenuation
TRIM
max
TRIM=-31dB, VOLATT=0dB
-34
-31
-28
dB
Minimum attenuation
TRIM
min
TRIM=0dB, VOLATT=0dB
-3.0
0
3.0
dB
Trimmer Step
TRIMS
VOLATT=0dB
0.6
1.0
1.4
dB
x
Line
Total Harmonic Distortion
THDLN
30kHz LPF
-
0.002
0.05
%
Signal to Noise Ratio
SNLN
DIN-AUDIO
95
100
-
dB
Line Cross-talk
CTLN
70
80
-
dB
Input Impedance
Zi
11
22
44
k
x
DIGITAL TIME DELAY
Delay Time
Td
Td=20.5ms
17.4
20.5
23.6
ms
Total Gain
GvD
DIN-DVOLOUT, DDVOL=0dB
-3.0
0
3.0
dB
Td=20.5ms
-
0.5
0.9
%
Td=51.2ms
-
1.2
2.2
%
Total Harmonic Distortion
THDD
30kHz LPF
Td=184ms
-
3.0
5.6
%
Maximum Output Voltage
VomaxD
THD=10%
0.7
1.0
-
Vrms
Td=20.5ms
-
-92
-80
dBV
Td=51.2ms
-
-84
-70
dBV
Output Noise Voltage
NoD
Vin=0Vrms
JIS-A
Td=184ms
-
-80
-65
dBV
Td=15.4 to 51.2ms, Gv=-3dB
6.0
7.0
8.0
kHz
LPF Cut-off Frequency
LPFfc
Td=123, 184ms, Gv=-3dB
-
3.0
-
kHz
x
Feedback Volume
Maximum attenuation
FBATT
max
ATT=-
dB
-
-70
-60
dB
Minimum attenuation
FBATT
min
ATT=-3dB
-6.0
-3.0
0
dB
Volume Step
FBVOLS
1.5
3.0
4.5
dB
x
Delay Volume
Maximum attenuation
DLATT
max
ATT=-
dB
-
-70
-60
dB
Minimum attenuation
DLATT
min
ATT=-3dB
-3.0
0
3.0
dB
Volume Step
DLVOLS
1.5
3.0
4.5
dB
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