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PRELIMINARY
NJW1148
Audio Processor with Sound Enhancement and TruSurround Virtualizer
I GENERAL DESCRIPTION The NJW1148 is an audio processor with BBE sound enhancement and SRS Labs' TruSurround virtualizer. It includes all of functions processing audio signal for TV, such as volume, balance, mute, line out, tone control, eala NJRC surround and simulated stereo functions. All of 2 internal status and variables are controlled by I C BUS. I FEATURES G Operating Voltage 8 to 10 V 2 G I C BUS Interface (Fast-Mode) G Passive TruSurround G BBE 0dB to +15dB(0.5dB/step) G eala (surround effect ; 2 steps) and Simulated Stereo GVolume 0 to -80dB, MUTE(0.33dB/step) GBalance 0 to -30dB, MUTE(1dB/step) GTone Control -15dB to +15dB(0.5dB/step) G Bi-CMOS Technology G Package Outline QFP48-P1 I BLOCK DIAGRAM
BBECHA BBECLA TS filter
I PACKAGE OUTLINE
NJW1148FP1
LINEOUTA
TONECHA TONECLA
OUTA
GND
V+
Bias
VREF MIXOUT
INA AGC
VOL1 Passive Matrix TruSurround / SRS 3D Stereo / eala / Simulated Stereo VOL1
BBE
TONE
VOL2 Buffer VOL2
LFIN LFOUT OUTC
I C Interface & Logic Control
INB
BBE
TONE
VOL2
CAP
TONECHB TONECLB
BBECHB BBECLB
OUTB
TS filter
SDA SCL
AGCTC
LINEOUTB
eala filter
2
-1-
NJW1148
I PIN FUNCTION
38
PRELIMINARY
25
39
24
48
15
1
14
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
SYMBOL FUNCTION TruSurround Filter Capacitor 3 TS3 Ach Input INA Ach BBE High-Pass Filter Capacitor BBECHA Ach BBE Low-Pass Filter Capacitor BBECLA TONECHA Ach TONE Treble Filter Capacitor TONECLA Ach TONE Bass Filter Capacitor LINEOUTA Ach Line Output Ach Output OUTA Center Output OUTC No Connection N.C. AGC Smoothing Filter Capacitor AGCTC Surround switching noise rejection Capacitor SURTC Ach Volume switching noise rejection Capacitor VOLATC Bch Volume switching noise rejection Capacitor VOLBTC VOLCTC Center Volume switching noise rejection Capacitor I2C Data Input SDA I2C Clock Input SCL Ground GND No Connection N.C. Power Supply V+ Reference Voltage stabilizing Capacitor VREF TONEHTC Tone Control Treble switching noise rejection Capacitor TONELTC Tone Control Bass switching noise rejection Capacitor OUTTC Line Output switching noise rejection Capacitor
No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
SYMBOL BBELTC BBEHTC N.C. LFOUT LFIN MIXOUT OUTB LINEOUTB TONECLB TONECHB BBECLB BBECHB INB SRS4 SRS3 SRS2 SRS1 SPACE1 CENTER N.C. SPACE2 CEALA TS1 TS2
FUNCTION
BBE Low switching noise rejection Capacitor BBE High switching noise rejection Capacitor
No Connection Buffer Output for LPF Buffer Input for LPF Ach Bch Mixed Output Bch Output Bch Line Output Bch TONE Bass Filter Capacitor Bch TONE Treble Filter Capacitor Bch BBE Low-Pass Filter Capacitor Bch BBE High-Pass Filter Capacitor Bch Input SRS Filter Capacitor 4 SRS Filter Capacitor 3 SRS Filter Capacitor 2 SRS Filter Capacitor 1 SPACE Volume1 CENTER Volume No Connection SPACE Volume2 eala Filter Capacitor TruSurround Filter Capacitor 1 TruSurround Filter Capacitor 2
-2-
PRELIMINARY
NJW1148
I ABSOLUTE MAXIMUM RATING (Ta=25C) PARAMETER SYMBOL Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range V PD Topr Tstg
+ +
RATING 12 1500 (*JEDEC2 layers PCB mount) -20 to +75 -40 to +125
UNIT V mW C C
I ELECTRICAL CHARACTERISTICS PARAMETER Operating Voltage Supply Current Reference Voltage Maximum Input Voltage Maximum Output Voltage Channel Balance Balance Boost A Balance Cut A Balance Boost B Balance Cut B Total Harmonic Distortion Maximum Voltage Gain Minimum Voltage Gain MIX Output Voltage Gain Line Output Voltage Gain Channel Separation Output Noise 1 Output Noise 2 Output Noise 3 Output Noise 4
MODE ; VOL=0dB, BAL=0dB,SUR=OFF, AGC=OFF, BBE=OFF, Tone=0dB)
(Ta=25C, V =9V, RL=47k, Vin=100mVrms/1kHz TEST CONDITION No Signal No Signal VOL=-20dB,THD=10% OUTPUT VOL=0dB,THD=1% VOL=0dB CHS="0",BAL=Mute Vin = 1Vrms CHS="1",BAL=Mute Vin = 1Vrms CHS="1",BAL=Mute Vin = 1Vrms CHS="0",BAL=Mute Vin = 1Vrms Vo=0.5Vrms BW=400Hz to 30kHz VOL= 0dB VOL= Mute MIXOUT, VOL=0dB LINEOUT, VOL=0dB Vin = 1Vrms VOL = 0dB BW=400Hz to 30kHz VOL = Mute BW = 400Hz to 30kHz LINEOUT, VOL = 0dB BW=400Hz to 30kHz LINEOUT, VOL = Mute BW = 400Hz to 30kHz
+
SYMBOL V ICC VREF VIM VOM GCB GBBA GBCA GBBB GBCB THD GVMAX GVMIN GVMIX GVLINE CS VNO1 VNO2 VNO3 VNO4
+
MIN. 8.0 4.0 2.8 -1.5 -2.0 -2.0 -2.0 -2.0 2.5 -
TYP. 9.0 30 4.5 3.0 2.5 0.0 0.0 0.0 0.0 0.0 4.5 -90 (31.6) -106 (5.0) -85 (56.2) -101 (8.9)
MAX. 10.0 45 5.0 1.5 2.0 -70 2.0 -70 0.5 2.0 -70 2.0 6.5 -70 -85 (56.2) -96 (15.8) -80 (100) -91 (28.2)
UNIT V mA V Vrms Vrms dB dB dB dB dB % dB dB dB dB
dB dBV (Vrms) dBV (Vrms) dBV (Vrms) dBV (Vrms) BW : Band Width
NTONE CONTROL CHARACTERISTICS PARAMETER Treble Boost Gain Treble Boost Flat Treble Boost Cut Bass Boost Gain Bass Boost Flat Bass Boost Cut
MODE ; VOL=0dB, BAL=0dB, SUR=OFF, AGC=OFF, BBE=OFF)
(Ta=25C, V =9V, RL=47k, Vin=100mVrms/1kHz TEST CONDITION TREB=+15dB, f=10kHz TREB=0dB,f=10kHz TRBE=-15dB, f=10kHz BASS=+15dB, f=100Hz BASS=0dB, f=100Hz BASS=-15dB, f=100Hz MIN. 12.5 -2.0 -17.5 12.5 -2.0 -17.5 TYP. 15.0 0.0 -15.0 15.0 0.0 -15.0 MAX. 17.5 2.0 -12.5 17.5 2.0 -12.5 UNIT dB dB dB dB dB dB
SYMBOL GHFBST GHFFLT GHFCUT GLFBST GLFFLT GLFCUT
-3-
NJW1148
NAGC CHARACTERISTICS PARAMETER AGC Boost AGC Flat 1 AGC Flat 2 AGC Flat 3 AGC Flat 4 AGC Cut NBBE CHARACTERISTICS PARAMETER Low Boost Gain High Boost Gain Neala CHARACTERISTICS PARAMETER Simulated Stereo A Simulated Stereo B Surround 3D1 Surround 3D2 Surround 3D3 Surround 3D4 NTruSurround CHARACTERISTICS PARAMETER TruSurround Gain1 TruSurround Gain2 TruSurround Gain3 NSRS 3D CHARACTERISTICS PARAMETER Feed Through Gain L+R Gain L-R Gain
+
PRELIMINARY
(Ta=25C, V =9V, RL=47k SYMBOL GAGCBST GAGCFLT1 GAGCFLT2 GAGCFLT3 GAGCFLT4 GAGCCUT
+
MODE ; VOL=0dB, BAL=0dB, SUR=OFF, AGC=ON, BBE=OFF, Tone=0dB)
TEST CONDITION Vin=50mVrms, f=1kHz Vin=300mVrms, f=1kHz Vin=400mVrms, f=1kHz Vin=500mVrms, f=1kHz Vin=600mVrms, f=1kHz Vin=2Vrms, f=1kHz
MIN. 1.5 -2.5 -2.5 -2.5 -2.5 -14
TYP. 3.5 0.0 0.0 0.0 0.0 -10
MAX. 5.5 2.5 2.5 2.5 2.5 -6.0
UNIT dB dB dB dB dB dB
MODE ; VOL=0dB, BAL=0dB, SUR=OFF, AGC=OFF, Tone=0dB)
(Ta=25C, V =9V, RL=47k, Vin=100mVrms/1kHz SYMBOL GBBELOW GBBEHIGH
+
TEST CONDITION
BBE-LOW =+15dB, f=50Hz BBE-HIGH=+15dB,f=10kHz
MIN. 12.5 12.5
TYP. 15 15
MAX. 17.5 17.5
UNIT dB dB
MODE ; VOL=0dB, BAL=0dB, AGC=OFF, BBE=0dB, Tone=0dB)
(Ta=25C, V =9V, RL=47k, Vin=100mVrms/1kHz SYMBOL GSIMA GSIMB G3D1 G3D2 G3D3 G3D4 TEST CONDITION
LIN+RINOUTa, f=1KHz SUR=MONO LIN+RINOUTb, f=1KHz SUR=MONO
MIN. 1.0 1.0 10 -2.0 8 0
TYP. 3.0 3.0 12 0.0 10 2
MAX. 5.0 5.0 14 2.0 12 4
UNIT dB dB dB dB dB dB
LINOUTa, f=100Hz SUR=eala6 LINOUTa, f=10KHz SUR=eala6 LINOUTb, f=100Hz SUR=eala6 LINOUTa, f=100Hz SUR=eala1
+
MODE; VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, Tone=0dB)
(Ta=25C, V =9V, RL=47k, Vin=100mVrms/1kHz TEST CONDITION
AINAOUT, f=1KHz SUR=TS AINBOUT, f=1KHz SUR=TS A+BINCOUT, f=1KHz SUR=TS2.1
+
SYMBOL GTS1 GTS2 GTS3
MIN. 0.3 -13.4 -1.1
TYP. 2.3 -11.4 0.9
MAX. 4.3 -9.4 2.9
UNIT dB dB dB
MODE; VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, Tone=0dB)
(Ta=25C, V =9V, RL=47k, Vin=100mVrms/1kHz SYMBOL GTHROUGH GL+R GL-R TEST CONDITION
AINAOUT, f=1KHz SUR=SRS 3D AINAOUT, f=1KHz SUR=SRS 3D AINAOUT, f=125Hz SUR=SRS 3D
MIN. -20.2 -15.0 -2.0
TYP. -18.2 -13.0 0.0
MAX. -16.2 -11.0 2.0
UNIT dB dB dB
-4-
PRELIMINARY
I I C BUS CHARACTERISTICS
2
NJW1148
2
(SDA, SCL) SYMBOL VIL VIH Vhys VOL tof tSP Ii Ci fSCL tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tr tf tSU:STO tBUF Cb VnL VnH MIN. 0.0 3.0 0.25 0
20+0.1Cb
I C BUS Load Conditions: Pull up resistance 4k (Connected to +5V), Load capacitance 200pF (Connected to GND)
PARAMETER Low Level Input Voltage High Level Input Voltage Hysteresis of Schmitt trigger inputs LOW level output voltage (3mA at SDA pin)
Output fall time from VIHmin to VILmax with a bus capacitance from 10pF to 400pF Pulse width of spikes which must be suppressed by the input filter
TYP. -
MAX. 1.5 5.0 0.4 250 50 10 10 400 0.9 300 300 400 -
UNIT V V V V ns ns A pF kHz s s s s s ns ns ns s s pF V V
0 -10 0.6 1.3 0.6 0.6 100 0.6 1.3 0.5 1
Input current each I/O pin with an input voltage between 0.1VDD and 0.9VDDmax
Capacitance for each I/O pin SCL clock frequency Hold time (repeated) START condition. LOW period of the SCL clock HIGH period of the SCL clock Set-up time for a repeated START condition Data hold time Data set-up time Rise time of both SDA and SCL signals Fall time of both SDA and SCL signals Set-up time for STOP condition Bus free time between a STOP and START condition Capacitive load for each bus line Noise margin at the LOW level Noise margin at the HIGH level
Cb ; total capacitance of one bus line in pF.
SDA
tf
tr
tSU:DAT
tf
tHD:STA
tSP
tr
tBUF
SCL
tHD:STA S tLOW tHD:DAT tHIGH
tSU:STA Sr
tSU:STO P S
-5-
NJW1148
I APPLICATION CIRCUIT
PRELIMINARY
10nF
4.7nF
22nF
48
TS2
47
TS1
46
CEALA
45
SPACE2
44
N.C.
43
CENTER
42
SPACE1
41
SRS1
10nF 0.22F 4.7nF
40
SRS2
39
SRS3
4.7nF
1 2 3 4 5 6 7 8 9 10
TS3
SRS4
38 37 36 35 34 33 32 31 30 29 28 27 26 25
0.22F
0.1F
0.1F
INA
INB
3.3nF
3.3nF
BBECHA
BBECHB
33nF
33nF
BBECLA
BBECLB
2.2nF
2.2nF
TONECHA
TONECHB
100nF
100nF
TONECLA
TONECLB
4.7F + 4.7F + 4.7F +
NJW1148
LINEOUTA LINEOUTB OUTA OUTB
+ 4.7F + 4.7F
OUTC
MIXOUT
N.C.
LFIN
330nF
11 12 13 14
AGCTC
LFOUT
+ 4.7F
1F + 1F + 1F +
SURTC
N.C.
VOLATC TONEHTC TONELTC
BBEHTC
+ 1F + 1F
VOLBTC VOLCTC VREF GND SDA N.C. SCL V+
BBELTC OUTTC
15
+ 1F
16
3.9K
17
3.9K
18
19
+
20
21
+
22
+ 1F
23
+ 1F
24
+ 1F
(NOTE) 1. Separate the I2C bus line from the following terminals for avoiding digital noise problem. Pin No. Symbol Pin No. Symbol Pin No. Symbol Pin No.
1 3 4 5 TS3
BBECHA BBECLA TONECHA
100F
22F
Symbol
SRS1 CEALA TS1 TS2
6 33 34 35
TONECLA TONECLB TONECHB BBECLB
36 38 39 40
BBECHB SRS4 SRS3 SRS2
41 46 47 48
2. The constant of capacitors connected to the terminals No.3, 4, 35 and 36 are designated by BBE Sound Inc. 3. The constant of capacitors connected to the terminals No.1,38,39,40,41,47and 48 are designated by SRS Labs, Inc.
-6-
PRELIMINARY
NJW1148
< MIXOUT, LFIN, LFOUT Low Pass Filter Setting > LPF cut off frequency and quality factor are adjusted by the external parts and given by the following functions.
C1
R1 30
R2
LFIN
29 28
MIXOUT
C2
LFOUT
fc =
1 (Hz) 2 R1 R2 C1 C2
Q=
1 C2 R1 C1 R2 + C1 R2 C2 R1
-7-
NJW1148
I TERMINAL DESCRIPTION
PIN NO.
PRELIMINARY
SYMBOL TS3 TS1 TS2
FUNCTION TruSurround Filter Capacitor 3 TruSurround Filter Capacitor 1 TruSurround Filter Capacitor 2
EQUIVALENT CIRCUIT
TERMINAL VOLTAGE
1 47 48
1 48 47
V+/2
2 37
INA INB
Ach Input Bch Input
2,37 200k
V+/2
3 36 4 35
BBECHA BBECHB BBECLA BBECLB
Ach BBE High-Pass Filter Capacitor Bch BBE High-Pass Filter Capacitor Ach BBE Low-Pass Filter Capacitor Bch BBE Low-Pass Filter Capacitor
3,36,4,35
V+/2
5 34
TONECHA TONECHB
Ach TONE Treble Filter Capacitor Bch TONE Treble Filter Capacitor
20k
5,34
V+/2
-8-
PRELIMINARY
NJW1148
PIN NO.
SYMBOL TONECLA TONECLB
FUNCTION Ach TONE Bass Filter Capacitor Bch TONE Bass Filter Capacitor
EQUIVALENT CIRCUIT
TERMINAL VOLTAGE
6 33
6,34 12k 12k
V+/2
7 8 9 28 30 31 32
LINEOUTA OUTA OUTC LFOUT MIXOUT OUTB LINEOUTB
Ach Line Output Ach Output Center Output Buffer Output for LPF Ach Bch Mixed Output Bch Output Bch Line Output
50
7,8,9,28,30,31,32
V+/2
11
AGCTC
AGC Smoothing Filter Capacitor
12k 400 11 400
1.4V
12
SURTC
Surround Switching Noise Rejection Capacitor
12 36k
-
-9-
NJW1148
PRELIMINARY
PIN NO.
SYMBOL VOLATC VOLBTC VOLCTC
FUNCTION A ch Volume Switching Noise Rejection Capacitor B ch Volume Switching Noise Rejection Capacitor Center ch Volume Switching Noise Rejection Capacitor
EQUIVALENT CIRCUIT
TERMINAL VOLTAGE
13 14 15
8k
13,14,15
Vref-0.7V
(Volume Max)
(0dB)
16 17
SDA SCL
I C Data Input 2 I C Clock Input
2
8k 16,17
-
18
GND
Ground
-
-
20
V+
Power Supply
-
-
- 10 -
PRELIMINARY
NJW1148
PIN NO.
SYMBOL VREF
FUNCTION Reference Voltage Stabilizing Capacitor
EQUIVALENT CIRCUIT
TERMINAL VOLTAGE
21
21
V+/2
22 23
TONEHTC Tone Control Treble Switching Noise Rejection Capacitor TONELTC Tone Control Bass Switching Noise Rejection Capacitor
36k 22,23
Vref-0.7V
(Tone=FLAT)
24
OUTTC
Line Output switching Noise Rejection Capacitor
36k 24
5V
(OUT-ON)
25
BBELTC
BBE Low Switching Noise Rejection Capacitor
36k 25
Vref-0.7V
(BBE=ON) (Low=0dB)
- 11 -
NJW1148
PRELIMINARY
PIN NO.
SYMBOL BBEHTC
FUNCTION BBE High Switching Noise Rejection Capacitor
EQUIVALENT CIRCUIT
TERMINAL VOLTAGE
26
36k
26
Vref-0.7V
(High=0dB)
29 46
LFIN CEALA
Buffer Output for LPF eala Filter Capacitor
29,46
-
38 39 40
SRS4 SRS3 SRS2
SRS Filter Capacitor 4 SRS Filter Capacitor 3 SRS Filter Capacitor 2
40 39 38
V+/2
41
SRS1
SRS Filter Capacitor 1
41 1k
V+/2
- 12 -
PRELIMINARY
NJW1148
PIN NO.
SYMBOL SPACE1 CENTER SPACE2
FUNCTION SPACE Volume1 CENTER Volume SPACE Volume2
EQUIVALENT CIRCUIT
TERMINAL VOLTAGE
42 43 45
42,43,45
V+/2
- 13 -
NJW1148
I DEFINITION OF I C REGISTER G I C BUS FORMAT
MSB LSB MSB
2 2
PRELIMINARY
LSB
MSB
LSB
S
1bit
Slave Address
8bit
A
1bit
Select Address
8bit
A
1bit
Data
8bit
A
P
1bit 1bit
S: Starting Term A: Acknowledge Bit P: Ending Term G SLAVE ADDRESS
MSB LSB
1
0
0
0
0
0
1
0
G CONTROL REGISTER TABLE
The select address sets each function (Volume, Balance, AGC, Surround, BBE, Tone Control). The auto-increment function cycles the select address as follows. 00H01H02H03H04H05H06H00H Select Address 00H 01H 02H 03H 04H 05H 06H 2 / 2.1ch CHS BCB BCT BBEL BBEH SUR BAL BASS TREB BBE AGC OUT BIT D7 D6 D5 D4 VOL Don't Care Don't Care Don't Care Don't Care AGC LVL Don't Care D3 D2 D1 D0
G CONTROL REGISTER DEFAULT VALUE Control register default value is all "0".
Select Address 00H 01H 02H 03H 04H 05H 06H BIT D7 0 0 0 0 0 0 0 D6 0 0 0 0 0 0 0 D5 0 0 0 0 0 0 0 D4 0 0 0 0 0 0 0 D3 0 0 0 0 0 0 0 D2 0 0 0 0 0 0 0 D1 0 0 0 0 0 0 0 D0 0 0 0 0 0 0 0
- 14 -
PRELIMINARY
G CONTROL COMMAND TABLE a) Master Volume
Select Address BIT D7 D6 D5 D4 D3 D2 D1
NJW1148
D0
00H VOL *VOL : Master Volume Attenuation level : 0 to -80dB(0.33dB/step), MUTE The volume is consisted of VOL1 and VOL2 and the level is divided into half to each VOL1 and VOL2. ex) Volume setting is -2dB ; VOL1 and VOL2 is set -1dB each.
b) Balance
Select Address 01H BIT D7 CHS D6 D5 D4 BAL D3 D2 D1 D0 Don't Care
*CHS : Balance channel select "0" : Ach "Bch is attenuated" "1" : Bch "Ach is attenuated" *BAL : Ach and Bch Balance Balance Level : 0 to -30dB (1dB/Step) , MUTE
c) Tone Control BASS
Select Address 02H BIT D7 BCB D6 D5 D4 BASS D3 D2 D1 D0 Don't Care
*BCB : Bass Boost or Cut "0" : Cut "1" : Boost *BASS : BASS Level Cut Level : -15 to 0dB(0.5dB/Step) Boost Level : 0 to +15dB(0.5dB/Step)
e) Tone Control TREBLE
Select Address 03H BIT D7 BCT D6 D5 D4 TREB D3 D2 D1 D0 Don't Care
*BCT : Treble Boost or Cut "0" : Cut "1" : Boost *TREB : Treble Level Cut Level : -15 to 0dB(0.5dB/Step) Boost Level : 0 to +15dB(0.5dB/Step)
f) BBE-Low
Select Address 04H *BBEL:BBE-LOW Level 0dB to 15dB (0.5dB/step) *BBE : BBE ON or OFF BIT D7 D6 D5 BBEL D4 D3 D2 BBE D1 D0 Don't Care
- 15 -
NJW1148
g) BBE-High
Select Address 05H *BBEH: BBE-HIGH Level 0dB to 15dB (0.5dB/step)
PRELIMINARY
BIT D7 D6 D5 BBEH D4 D3 D2 AGC D1 D0 AGC LVL
*AGC : AGC ON or OFF *AGC LVL : AGC Level 300mVrms, 400mVrms, 500mVrms, 600mVrms
h) Surround (eala, TruSurround)
Select Address 06H BIT D7 2 / 2.1ch
2ch (TruSurround), 2.1ch (Center out)
D6
D5 SUR
D4
D3
D2 OUT
D1
D0
Don't care
*2 / 2.1ch : Surround Output Mode *SUR : Surround Mode OFF, MONO, SRS 3D, TS, eala1, 2,3,4,5,6 *OUT : Output Switch Output ON / OFF
- 16 -
PRELIMINARY
I Master Volume (Select Address: 00H)
VOL Gain(dB) 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -26 -27 -28 -29 -30 -31 -32 -33 -34 -35 -36 -37 -38 -39 -40 -41 -42 HEX FF FC F9 F6 F3 F0 ED EA E7 E4 E1 DE DB D8 D5 D2 CF CC C9 C6 C3 C0 BD BA B7 B4 B1 AE AB A8 A5 A2 9F 9C 99 96 93 90 8D 8A 87 84 81 D7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D5 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 D4 1 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 D3 1 1 1 0 0 0 1 1 0 0 0 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 D2 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0
NJW1148
D1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0
D0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
- 17 -
NJW1148
PRELIMINARY
VOL Gain(dB) -43 -44 -45 -46 -47 -48 -49 -50 -51 -52 -53 -54 -55 -56 -57 -58 -59 -60 -61 -62 -63 -64 -65 -66 -67 -68 -69 -70 -71 -72 -73 -74 -75 -76 -77 -78 -79 -80 Mute HEX 7E 7B 78 75 72 6F 6C 69 66 63 60 5D 5A 57 54 51 4E 4B 48 45 42 3F 3C 39 36 33 30 2D 2A 27 24 21 1E 1B 18 15 12 0F 00 D7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D5 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 D4 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 1 1 1 1 1 0 0 D3 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 1 1 1 0 0 1 0 D2 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 D1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
- 18 -
PRELIMINARY
I Balance (Select Address: 01H)
Channel Setting (CHS) Attenuated Bch Gain Attenuated Ach Gain Gain(dB) 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 -22 -23 -24 -25 -26 -27 -28 -29 -30 MUTE D7 0 1 BAL D4 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
NJW1148
D6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
D5 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
D3 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
D2 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
- 19 -
NJW1148
PRELIMINARY
I Tone Control Bass (Select Address: 02H)
Bass Cut or Boost Cut Boost BCB D7 0 1 BASS Cut Gain(dB) -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 Boost Gain(dB) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 D6 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 D5 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 D4 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 D3 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
I Tone Control Treble (Select Address: 03H)
Treble Cut or Boost Cut Boost BCT D7 0 1 TREB Cut Gain(dB) -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 Boost Gain(dB) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 D6 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 D5 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 D4 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 D3 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
- 20 -
PRELIMINARY
I BBE-LOW Gain Code
Gain(dB) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 D7 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
NJW1148
(Select Address: 04H)
BBEL D6 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 D5 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 D4 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
I BBE (Select Address: 04H)
BBE ON/OFF OFF ON BBE D2 0 1
BBE-HIGH Gain Code
Gain(dB) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 D7 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
(Select Address: 05H)
BBEH D6 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 D5 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 D4 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 D3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
- 21 -
NJW1148
I AGC (Select Address: 05H)
AGC ON/OFF OFF ON AGC D2 0 1
PRELIMINARY
I AGC Level (Select Address: 05H)
AGC Level 300mVrms 400mVrms 500mVrms 600mVrms AGC LVL D1 0 0 1 1 D0 0 1 0 1
2 / 2.1ch (Select Address: 06H)
2 / 2.1ch 2ch 2.1ch 2 / 2.1ch D7 0 1
Surround Mode (Select Address: 06H)
SUR OFF MONO SRS 3D TS eala 1 eala 2 eala 3 eala 4 eala 5 eala 6 SUR D6 0 1 1 1 0 0 0 0 0 0 D5 0 1 1 1 0 0 0 1 1 1 D4 0 1 1 0 0 1 1 0 0 1 D3 0 1 0 1 1 0 1 0 1 0
IOutput Switch (Select Address: 06H)
Output Switch OFF ON OUT D2 0 1
- 22 -
PRELIMINARY
ITYPICAL CHARACTERISTICS
Operating Current vs. Pow er Supply Voltage
R L=47k, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
NJW1148
Operating Current vs. Ambient Temperature
V+=9V, R L=47k, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
25 Ta=25C Ta=75C Operating Current [mA]
25
20 Operating Current [mA]
20
15 Ta=-20C 10
15
10
5
5
0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Pow er Supply Voltage [V]
0 -50
-25
0
25
50
75
100
125
Ambient Temperature [C]
Reference Voltage vs. Pow er Supply Voltage
R L=47k, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
Reference Voltage vs. Ambient Temperature
V+=9V, R L=47k, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
10
10
8 Reference Voltage [V] Reference Voltage [V] Ta=-20C
8
6 Ta=-20C Ta=-20C
6
4
4
2
2
0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Pow er Supply Voltage [V]
0 -50
-25
0
25
50
75
100
125
Ambient Temperature [C]
Voltage Gain vs. Volume Control
V+=9V, R L=47k, Vin(Ach)=1Vrms, f =1kHz, BW=400Hz-30kHz, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
Voltage Gain vs. Balance Control
V+=9V, R L=47k, Vin(Ach)=1Vrms, f =1kHz, BW=400Hz-30kHz, VOL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
20 0 -20 Voltage Gain [dB] -40 -60 Ta=-20C, 25C, 75C -80 -100 -120
0 25 50 75 100 125 150 175 200 225 250
20 A+BinAout 0 -20 Voltage Gain [dB] A+BinBout A+BinAout -40 Ta=-20C, 25C, 75C -60 -80 -100 -120 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Balance Control [dec] Volume Control [dec] A+BinBout
- 23 -
NJW1148
ITYPICAL CHARACTERISTICS
PRELIMINARY
Total Harmonic Distortion vs. Input Voltage
V+=9V, R L=47k, Vin(Ach), f =1kHz, BW=400Hz-30kHz, VOL=-20dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
Total Harmonic Distortion vs. Input Voltage
Ta=25C, V+=9V, R L=47k, Vin(Ach), f =1kHz, BW=400Hz-30kHz, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
100
100
10 THD+ [] THD+ []
10 VOL=-30dB
1 Ta=-20C Ta=75C Ta=25C
1
VOL=-20dB
0.1
0.1 VOL=0dB VOL=-10dB
VOL=0dB
0.01 0.01
0.1
1
10
0.01 0.01
0.1
1
10
Input Voltage [Vrms]
Input Voltage [Vrms]
Total Harmonic Distortion vs. Output Voltage
V+=9V, R L=47k, Vin(Ach), f =1kHz, BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
Total Harmonic Distortion vs. Output Voltage
Ta=25C, V+=9V, R L=47k, Vin(Ach), f =1kHz, BW=400Hz-30kHz, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
100
100 VOL=-20dB VOL=0dB
10 THD+ [] THD+ []
10
VOL=-30dB
VOL=-10dB
Ta=-20C 1 Ta=25C 0.1 Ta=75C 0.01 0.01 0.1 1 10
1
0.1
0.01 0.01
0.1
1
10
Output Voltage [Vrms]
Output Voltage [Vrms]
Channel Separation vs. Frequency
V+=9V, R L=47k, Vin=1Vrms, BW=10Hz-30kHz, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
Mute Level vs. Frequency
V+=9V, R L=47k, Vin=1Vrms, BW=10Hz-30kHz, VOL=MUTE, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
120 100 Channel Separation [dB] 80 60 40 20 0 0.01 AinBout Ta=-20C, 25C, 75C BinAout Mute Level [dB]
120 100 80 60 40 20 0 0.01 Aout , Bout Ta=-20C, 25C, 75C
0.1
1 Frequency [kHz]
10
100
0.1
1 Frequency [kHz]
10
100
- 24 -
PRELIMINARY
ITYPICAL CHARACTERISTICS
Voltage Gain (LINE) vs. Frequency
Ta=25C, V+=9V, R L=47k, Vin(Ach)=0.1Vrms, Vout(LINEAch), VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
NJW1148
Output Noise Voltage (OUT) vs. Frequency
V+=9V, R L=47k, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
20 15 10 Voltage Gain [dB] Ta=-20C, 25C, 75C 5 0 -5 -10 -15 -20 0.01 Output Noise Voltage [dBV]
0 -20 -40 -60 -80 -100 VOL=MUTE 0.1 1 Frequency [kHz] 10 100 -120 -50 -25 0 25 50 75 100 125 VOL=0dB
Frequency [C]
Output Noise Voltage (LINE) vs. Frequency
V+=9V, R L=47k, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF
AGC Output Voltage vs. Input Voltage
V+=9V, RL=47k, Vin(A+Bch), f=1kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=300mV, BASS=TREB=0dB, BBE=OFF, Surround=OFF
0 -20 Output Noise Voltage [dBV] Output Voltage [Vrms]
10 AGC=OFF 1
-40 -60 VOL=0dB -80 -100 -120 -50
Ta=, 25C, 75C Ta=-20C
0.1
0.01
VOL=MUTE 0.001 0.001
-25
0
25
50
75
100
125
0.01
0.1
1
10
Frequency [C]
Input Voltage [Vrms]
AGC Output Voltage vs. Input Voltage
Ta=25C, V+=9V, RL=47k, Vin(A+Bch), f=1kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, BASS=TREB=0dB, BBE=OFF, Surround=OFF
AGC Attack Time Response
Ta=25C, V+=9V, RL=47k, Vin(A+Bch), f=20kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=300mV, BASS=TREB=0dB, BBE=OFF, Surround=OFF
10 AGC=OFF Output Voltage [Vrms] 1 AGC=600mV AGC=500mV AGC=400mV AGC=300mV
2 1.5 1 Output Voltage [V] 0.5 0 -0.5 -1 -1.5
0.1
0.01
0.001 0.001
-2 0.01 0.1 1 10 0 2 4 6 8 10 Input Voltage [Vrms] Time [msec]
- 25 -
NJW1148
ITYPICAL CHARACTERISTICS
AGC Recovery Time Response
PRELIMINARY
Voltage Gain vs. Frequency (TONE)
Ta=25C, V+=9V, R L=47k, Vin(Ach)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, eala=By pass, TS=By pass
Ta=25C, V+=9V, RL=47k, Vin(A+Bch), f=10kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=300mV, BASS=TREB=0dB, BBE=OFF, Surround=OFF
0.2 0.15 0.1 Output Voltage [V] Voltage Gain [dB] 0.05 0 -0.05 -0.1 -0.15 -0.2
0 50 100 150 200 250 300 350 400 450 500 550 600
20 15 10 5 0 -5 -10 -15 -20 0.01
BASS=TREB +15dB +12dB + 9dB + 6dB + 3dB 0dB - 3dB - 6dB - 9dB -12dB -15dB
0.1
1 Frequency [kHz]
10
100
Time [msec]
Voltage Gain vs. Frequency (TONE)
Ta=25C, V+=9V, R L=47k, Vin(Ach)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, eala=By pass, TS=By pass
Voltage Gain vs. Frequency (BBE)
Ta=25C, V+=9V, R L=47k, Vin(Lch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, Surround=OFF
20 15 10 Voltage Gain [dB] 5 Ta=-20C, 25C, 75C 0 -5 -10 -15 -20 0.01 +15dB
Ta=75C
BASS=TREB Ta=25C
20 15 Voltage Gain [dB] 10 5 0 -5
BBEL=BBEH +15dB +12dB + 9dB + 6dB + 3dB OFF
Ta=-20C
0dB
Ta=-20C, 25C, 75C -15dB -10 0.01 0.1 1 Frequency [kHz] 10
0.1
1 Frequency [kHz]
10
100
100
Voltage Gain vs. Frequency (BBE)
V+=9V, R L=47k, Vin(Lch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, Surround=OFF
Phase vs. Frequency (BBE)
Ta=25C, V+=9V, R L=47k, Vin(Lch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, Surround=OFF
20 BBEL=BBEH=15dB 15 Voltage Gain [dB] 10 Phase [deg] 5 0 -5 -10 0.01 Ta=75C Ta=25C Ta=-20C
225 180 135 90 BBEL=BBH=+3dB 45 0 -45 -90 -135 -180 0.1 1 Frequency [kHz] 10 100 -225 0.01 0.1 1 Frequency [kHz] 10 100 BBE=OFF 3dB Step BBEL=BBH=+15dB
- 26 -
PRELIMINARY
ITYPICAL CHARACTERISTICS
Voltage Gain vs. Frequency (MONO)
V+=9V, R L=47k, Vin(A+Bch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=MONO
NJW1148
Phase vs. Frequency (MONO)
V+=9V, R L=47k, Vin(A+Bch)=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=MONO
20
180 135 90
Ta= -20, 25, 75C
10
45 0 Phase [deg] -45 -90 -135 -180 -225
Vout(Bch)
Voltage Gain [dB]
0
Ta=-20, 25, 75C Vout(Ach)
-10
-20
-270 -315 -360 0.01
-30 0.01
0.1
1 Frequency [kHz]
10
100
0.1
1 Frequency [kHz]
10
100
Voltage Gain vs. Frequency (eala Ach)
V+=9V, R L=47k, Vin=0.1Vrms,Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=eala
Voltage Gain vs. Frequency (eala Bch)
V+=9V, R L=47k, Vin=0.1Vrms,Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=eala
15 eala6 eala5 Voltage Gain [dB] eala4 eala3 5 eala2 eala1 OFF AinAout Ta=-20, 25, 75C Voltage Gain [dB]
15 eala6 eala5 5 eala4
Ain out Ta=-20, 25, 75C
eala3 -5 eala2
-15
eala1
-5 0.01
0.1
1 Frequency [kHz]
10
100
-25 0.01
0.1
1 Frequency [kHz]
10
100
Voltage Gain vs. Frequency (TS2)
V+=9V, R L=47k, Vin=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=TS_2ch
Voltage Gain vs. Frequency (TS2.1)
V+=9V, R L=47k, Vin=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=TS_2.1ch
20 15 10 Voltage Gain [dB] 5 0 -5 -10 -15 -20 -25 -30 0.01 AinBout Ta= -20, 25, 75C 0.1 1 Frequency [kHz] 10 100 AinAout Ta=-20, 25, 75C Voltage Gain [dB]
20 15 10 5 0 -5 -10 -15 -20 -25 -30 0.01 0.1 1 Frequency [kHz] 10 100 AinCout Ta= -20, 25, 75C AinAout, AinBout Ta=-20, 25, 75C
- 27 -
NJW1148
ITYPICAL CHARACTERISTICS
Voltage Gain vs. Frequency (3D)
PRELIMINARY
DC Offset Voltage vs. Ambient Temperature (TONE)
V+=9V, R L=47k, By pass : VOL=0B, BAL=0dB, AGC=OFF, BBE=OFF, Surround=OFF
Ta=25C, V+=9V, RL=47k, Vin=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=3D
20 15 10 Voltage Gain [dB] 5 0 -5 -10 -15 -20 -25 -30 0.01
Space=min, Center=min Ain Aout, Ta= -20, 25, 75C
Space=min, Center=max Bin Aout Space=max, Center=min Ain Aout , Ta= -20, 25, 75C
200 160 120
Space=max, Center=max, Ain Aout Ta=-20, 25, 75C
DC Offset Voltage [mV]
80 40 0 -40 -80 -120 -160
BASS=+15dB TREB=+15dB, -15dB BASS=-15dB
Ta=-20, 25C Ta=-75C
0.1
1 Frequency [kHz]
10
100
-200 -50
-25
0
25
50
75
100
125
Ambient Temperature [C]
DC Offset Voltage vs. Ambient Temperature (BBE)
V+=9V, R L=47k, By pass : VOL=0B, BAL=0dB, AGC=OFF, BASS=TREB=0dB, Surround=OFF
DC Offset Voltage vs. Ambient Temperature (Surround)
V+=9V, R L=47k, By pass : VOL=0B, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF
200 160 120 DC Offset Voltage [mV] 80 40 0 -40 -80 -120 -160 -200 -50 -25 0 25 50 75 100 125
BBEH=+15dB BBEL=+15dB
200 160 120 DC Offset Voltage [mV] 80 40 0 -40 -80 -120 -160 -200 -50 -25 0 25 50 75 100 125 MONO TSV eala6 3D
Ambient Temperature [C]
Ambient Temperature [C]
- 28 -
PRELIMINARY
INOTE
NJW1148
The NJW1148 is manufactured by New Japan Radio Co., Ltd. under license from BBE Sound Inc. BBE is a registered trademark of BBE Sound Inc. A license from BBE Sound Inc. is required before the NJW1148 can be purchased from New Japan Radio Co.,Ltd. BBE Sound, Inc. 5381 Production Drive Huntington Beach, CA 92649 Tel:(714)897-6766 Fax:(714)896-0736
The TruSurround technology right incorporated in the NJW1148 are owned by SRS Labs, a U.S. Corporation and licensed to New Japan Radio Co., Ltd. Purchaser of NJW1148 must sign a license for use of the chip and display of the SRS Labs trademarks. Any products incorporating the NJW1148 must be sent to SRS Labs for review. TruSurround is protected under U.S. and foreign patents issued and/or pending. TruSurround, SRS and the symbol are trademarks of SRS Labs, Inc. in the United States and selected foreign countries. Neither the purchase of the NJW1148, nor the corresponding sale of audio enhancement equipment conveys the right to sell commercialized recordings made with any SRS technology. SRS Labs requires all set makers to comply with all rules and regulations as outlined in the SRS Trademark Usage Manual separately provided. For further information, please contact: SRS Labs, Inc. 2909 Daimler Street. Santa Ana, CA 92705 USA Tel: 949-442-1070 Fax: 949-852-1099 http: //www.srslabs.com
Purchase of I2C components of New Japan Radio Co., Ltd or one of its sublicensed Associated Companies conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.
[CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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