NJW1148 Audio Processor with Sound Enhancement and TruSurround Virtualizer ■ 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. ■ PACKAGE OUTLINE ■ FEATURES ● Operating Voltage 8 to 10 V 2 ● I C BUS Interface (Fast-Mode) ● Passive TruSurround ● BBE 0dB to +15dB(0.5dB/step) ● eala (surround effect ; 2 steps) and Simulated Stereo ●Volume 0 to -80dB, MUTE(0.33dB/step) ●Balance 0 to -30dB, MUTE(1dB/step) ●Tone Control -15dB to +15dB(0.5dB/step) ● Bi-CMOS Technology ● Package Outline QFP48-P1 GND V+ LINEOUTA OUTA TONECHA TONECLA TS filter BBECHA BBECLA ■ BLOCK DIAGRAM NJW1148FP1 Bias VREF MIXOUT BBE VOL1 AGC Passive Matrix TruSurround / SRS 3D Stereo / eala / Simulated Stereo LFIN VOL2 Buffer VOL2 BBE VOL1 TONE LFOUT OUTC VOL2 CAP SDA SCL LINEOUTB OUTB TONECHB TONECLB BBECHB BBECLB eala filter AGCTC TS filter 2 INB TONE I C Interface & Logic Control INA –1– NJW1148 ■ PIN FUNCTION 38 25 39 24 48 15 1 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 –2– 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 14 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 NJW1148 ■ ABSOLUTE MAXIMUM RATING (Ta=25°°C) PARAMETER SYMBOL RATING UNIT 12 + Supply Voltage Power Dissipation V PD 1500 (*JEDEC2 layers PCB mount) V mW Operating Temperature Range Topr -20 to +75 °C Storage Temperature Range Tstg -40 to +125 °C ■ ELECTRICAL CHARACTERISTICS + (Ta=25°C, V =9V, RL=47kΩ, Vin=100mVrms/1kHz MODE ; VOL=0dB, BAL=0dB,SUR=OFF, AGC=OFF, BBE=OFF, Tone=0dB) PARAMETER SYMBOL TEST CONDITION + Operating Voltage Supply Current Reference Voltage V ICC VREF Maximum Input Voltage VIM Maximum Output Voltage VOM Channel Balance GCB Balance Boost A GBBA Balance Cut A GBCA Balance Boost B GBBB Balance Cut B GBCB Total Harmonic Distortion THD Maximum Voltage Gain GVMAX 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 Minimum Voltage Gain GVMIN VOL= Mute MIX Output Voltage Gain GVMIX GVLINE MIXOUT, VOL=0dB LINEOUT, VOL=0dB Line Output Voltage Gain Channel Separation No Signal No Signal CS Output Noise 1 VNO1 Output Noise 2 VNO2 Output Noise 3 VNO3 Output Noise 4 VNO4 ◆TONE CONTROL CHARACTERISTICS 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 MIN. TYP. MAX. UNIT 8.0 4.0 9.0 30 4.5 10.0 45 5.0 V mA V 2.8 3.0 - Vrms - 2.5 - Vrms -1.5 0.0 1.5 dB -2.0 0.0 2.0 dB - - -70 dB -2.0 0.0 2.0 dB - - -70 dB - - 0.5 % -2.0 0.0 2.0 dB - - -70 dB -2.0 0.0 2.0 dB 2.5 4.5 6.5 dB - -90 (31.6) -106 (5.0) -85 (56.2) -101 (8.9) -70 -85 (56.2) -96 (15.8) -80 (100) -91 (28.2) + dB dBV (µVrms) dBV (µVrms) dBV (µVrms) dBV (µVrms) BW : Band Width (Ta=25°C, V =9V, RL=47kΩ, Vin=100mVrms/1kHz MODE ; VOL=0dB, BAL=0dB, SUR=OFF, AGC=OFF, BBE=OFF) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Treble Boost Gain Treble Boost Flat GHFBST GHFFLT TREB=+15dB, f=10kHz TREB=0dB,f=10kHz 12.5 -2.0 15.0 0.0 17.5 2.0 dB dB Treble Boost Cut GHFCUT TRBE=-15dB, f=10kHz -17.5 -15.0 -12.5 dB Bass Boost Gain GLFBST BASS=+15dB, f=100Hz 12.5 15.0 17.5 dB Bass Boost Flat GLFFLT BASS=0dB, f=100Hz -2.0 0.0 2.0 dB Bass Boost Cut GLFCUT BASS=-15dB, f=100Hz -17.5 -15.0 -12.5 dB –3– NJW1148 ◆AGC CHARACTERISTICS + (Ta=25°C, V =9V, RL=47kΩ MODE ; VOL=0dB, BAL=0dB, SUR=OFF, AGC=ON, BBE=OFF, Tone=0dB) PARAMETER AGC Boost AGC Flat 1 AGC Flat 2 AGC Flat 3 AGC Flat 4 AGC Cut ◆BBE CHARACTERISTICS SYMBOL GAGCBST GAGCFLT1 GAGCFLT2 GAGCFLT3 GAGCFLT4 GAGCCUT 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 TYP. 15 15 MAX. 17.5 17.5 UNIT dB dB + (Ta=25°C, V =9V, RL=47kΩ, Vin=100mVrms/1kHz MODE ; VOL=0dB, BAL=0dB, SUR=OFF, AGC=OFF, Tone=0dB) PARAMETER Low Boost Gain High Boost Gain ◆eala CHARACTERISTICS SYMBOL GBBELOW GBBEHIGH TEST CONDITION BBE-LOW =+15dB, f=50Hz BBE-HIGH=+15dB,f=10kHz MIN. 12.5 12.5 + (Ta=25°C, V =9V, RL=47kΩ, Vin=100mVrms/1kHz MODE ; VOL=0dB, BAL=0dB, AGC=OFF, BBE=0dB, Tone=0dB) PARAMETER SYMBOL TEST CONDITION Simulated Stereo A GSIMA LIN+RIN→OUTa, f=1KHz SUR=MONO Simulated Stereo B GSIMB LIN+RIN→OUTb, f=1KHz SUR=MONO Surround 3D1 G3D1 Surround 3D2 G3D2 Surround 3D3 G3D3 Surround 3D4 G3D4 ◆TruSurround CHARACTERISTICS LIN→OUTa, f=100Hz SUR=eala6 LIN→OUTa, f=10KHz SUR=eala6 LIN→OUTb, f=100Hz SUR=eala6 LIN→OUTa, f=100Hz SUR=eala1 MIN. TYP. MAX. UNIT 1.0 3.0 5.0 dB 1.0 3.0 5.0 dB 10 12 14 dB -2.0 0.0 2.0 dB 8 10 12 dB 0 2 4 dB + (Ta=25°C, V =9V, RL=47kΩ, Vin=100mVrms/1kHz MODE; VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, Tone=0dB) PARAMETER SYMBOL TruSurround Gain1 GTS1 TruSurround Gain2 GTS2 TruSurround Gain3 GTS3 ◆SRS 3D CHARACTERISTICS TEST CONDITION AIN→AOUT, f=1KHz SUR=TS AIN→BOUT, f=1KHz SUR=TS A+BIN→COUT, f=1KHz SUR=TS2.1 MIN. TYP. MAX. UNIT 0.3 2.3 4.3 dB -13.4 -11.4 -9.4 dB -1.1 0.9 2.9 dB MIN. TYP. MAX. UNIT -20.2 -18.2 -16.2 dB -15.0 -13.0 -11.0 dB -2.0 0.0 2.0 dB + (Ta=25°C, V =9V, RL=47kΩ, Vin=100mVrms/1kHz MODE; VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, Tone=0dB) PARAMETER Feed Through Gain SYMBOL GTHROUGH L+R Gain GL+R L-R Gain GL-R –4– TEST CONDITION AIN→AOUT, f=1KHz SUR=SRS 3D AIN→AOUT, f=1KHz SUR=SRS 3D AIN→AOUT, f=125Hz SUR=SRS 3D NJW1148 2 ■ I C BUS CHARACTERISTICS (SDA, SCL) 2 I C BUS Load Conditions: Pull up resistance 4kΩ (Connected to +5V), Load capacitance 200pF (Connected to GND) PARAMETER SYMBOL MIN. TYP. MAX. UNIT Low Level Input Voltage VIL 0.0 - 1.5 V High Level Input Voltage VIH 3.0 - 5.0 V Hysteresis of Schmitt trigger inputs Vhys 0.25 - - V LOW level output voltage (3mA at SDA pin) VOL 0 - 0.4 V Output fall time from VIHmin to VILmax with a bus capacitance from 10pF to 400pF tof 20+0.1Cb - 250 ns Pulse width of spikes which must be suppressed by the input filter tSP 0 - 50 ns Input current each I/O pin with an input voltage between 0.1VDD and 0.9VDDmax Ii -10 - 10 µA Capacitance for each I/O pin Ci - - 10 pF fSCL - - 400 kHz tHD:STA 0.6 - - µs LOW period of the SCL clock tLOW 1.3 - - µs HIGH period of the SCL clock tHIGH 0.6 - - µs Set-up time for a repeated START condition tSU:STA 0.6 - - µs Data hold time tHD:DAT - - 0.9 µs Data set-up time tSU:DAT 100 - - ns Rise time of both SDA and SCL signals tr - - 300 ns Fall time of both SDA and SCL signals tf - - 300 ns tSU:STO 0.6 - - µs Bus free time between a STOP and START condition tBUF 1.3 - - µs Capacitive load for each bus line Cb - - 400 pF Noise margin at the LOW level VnL 0.5 - - V Noise margin at the HIGH level VnH 1 - - V SCL clock frequency Hold time (repeated) START condition. Set-up time for STOP condition Cb ; total capacitance of one bus line in pF. SDA tf tr tHD:STA tf tSU:DAT tSP tBUF tr SCL tHD:STA tSU:STA S tLOW tHD:DAT tHIGH tSU:STO Sr P S –5– NJW1148 0.1µF 3.3nF 33nF 2.2nF 100nF 4.7µF + 4.7µF + 4.7µF + 330nF 44 43 42 41 40 39 TS1 CEALA SPACE2 N.C. CENTER SPACE1 SRS1 SRS2 SRS3 38 INB 37 BBECHA BBECHB 36 4 BBECLA BBECLB 35 5 TONECHA TONECHB 34 6 TONECLA TONECLB 33 7 LINEOUTA LINEOUTB 32 + + NJW1148 0.1µF 3.3nF 33nF 2.2nF 100nF 4.7µF 8 OUTA OUTB 31 9 OUTC MIXOUT 30 LFIN 29 LFOUT 28 N.C. 27 BBEHTC 26 + 25 + 10 N.C. 11 AGCTC 4.7µF + TONEHTC TONELTC OUTTC 16 17 18 19 20 21 22 23 24 + + + + + 1µF 1µF + BBELTC 1µF 15 100µF VOLBTC 22µF 14 1µF VOLATC VREF 13 V+ SURTC N.C. 4.7µF 12 VOLCTC (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 0.22µF SRS4 GND + 3 45 SCL 1µF INA 46 3.9KΩ + 2 47 SDA + 1µF TS3 48 3.9KΩ 1µF 1 0.22µF 4.7nF TS2 4.7nF 4.7nF 10nF 22nF 10nF ■ APPLICATION CIRCUIT TS3 BBECHA BBECLA TONECHA 6 33 34 35 TONECLA TONECLB TONECHB BBECLB 36 38 39 40 BBECHB SRS4 SRS3 SRS2 41 46 47 48 1µF 1µF Symbol SRS1 CEALA TS1 TS2 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– 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 R2 30 LFIN 29 28 MIXOUT LFOUT C2 fc = 1 (Hz) 2π R1 ⋅ R2 ⋅ C1⋅ C2 Q= 1 C2 ⋅ R1 C1⋅ R2 + C1 ⋅ R2 C2 ⋅ R1 –7– NJW1148 ■ TERMINAL DESCRIPTION PIN NO. SYMBOL 1 TS3 47 TS1 48 TS2 FUNCTION TruSurround Filter Capacitor 3 TruSurround Filter Capacitor 1 TruSurround Filter Capacitor 2 TERMINAL VOLTAGE EQUIVALENT CIRCUIT 1 48 V+/2 47 2 37 INA INB Ach Input Bch Input 2,37 V+/2 200k 3 BBECHA 36 BBECHB 4 BBECLA 35 BBECLB 5 TONECHA 34 TONECHB Ach BBE High-Pass Filter Capacitor Bch BBE High-Pass Filter Capacitor Ach BBE Low-Pass Filter Capacitor Bch BBE Low-Pass Filter Capacitor V+/2 3,36,4,35 Ach TONE Treble Filter Capacitor Bch TONE Treble Filter Capacitor 20k –8– 5,34 V+/2 NJW1148 PIN NO. SYMBOL FUNCTION 6 TONECLA 33 TONECLB Ach TONE Bass Filter Capacitor Bch TONE Bass Filter Capacitor TERMINAL VOLTAGE EQUIVALENT CIRCUIT 6,34 12k 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 11 AGCTC AGC Smoothing Filter Capacitor 12k 7,8,9,28,30,31,32 50 12k V+/2 V+/2 1.4V 400 400 11 12 SURTC Surround Switching Noise Rejection Capacitor 12 - 36k –9– NJW1148 PIN NO. SYMBOL FUNCTION 13 VOLATC 14 VOLBTC 15 VOLCTC A ch Volume Switching Noise Rejection Capacitor B ch Volume Switching Noise Rejection Capacitor Center ch Volume Switching Noise Rejection Capacitor 16 17 SDA SCL TERMINAL VOLTAGE EQUIVALENT CIRCUIT 8k 13,14,15 Vref-0.7V (Volume Max) (0dB) 2 I C Data Input 2 I C Clock Input 8k 16,17 18 20 – 10 – GND V+ - Ground - - - - Power Supply NJW1148 PIN NO. SYMBOL 21 VREF FUNCTION TERMINAL VOLTAGE EQUIVALENT CIRCUIT Reference Voltage Stabilizing Capacitor V+/2 21 22 23 TONEHTC Tone Control Treble Switching Noise Rejection Capacitor TONELTC Tone Control Bass Switching Noise Rejection Capacitor 22,23 36k 24 OUTTC Vref-0.7V (Tone=FLAT) Line Output switching Noise Rejection Capacitor 36k 5V 24 25 BBELTC (OUT-ON) BBE Low Switching Noise Rejection Capacitor 36k 25 Vref-0.7V (BBE=ON) (Low=0dB) – 11 – NJW1148 PIN NO. SYMBOL FUNCTION 26 BBEHTC BBE High Switching Noise Rejection Capacitor 26 36k 29 46 LFIN CEALA SRS4 SRS3 SRS2 Vref-0.7V (High=0dB) Buffer Output for LPF eala Filter Capacitor - 29,46 38 39 40 TERMINAL VOLTAGE EQUIVALENT CIRCUIT SRS Filter Capacitor 4 SRS Filter Capacitor 3 SRS Filter Capacitor 2 40 39 V+/2 38 41 SRS1 SRS Filter Capacitor 1 41 1k – 12 – V+/2 NJW1148 PIN NO. SYMBOL 42 43 45 SPACE1 CENTER SPACE2 FUNCTION EQUIVALENT CIRCUIT TERMINAL VOLTAGE SPACE Volume1 CENTER Volume SPACE Volume2 42,43,45 V+/2 – 13 – NJW1148 2 ■ DEFINITION OF I C REGISTER 2 ● I C BUS FORMAT MSB S LSB Slave Address 1bit 8bit MSB LSB A Select Address 1bit 8bit MSB A LSB Data 1bit A 8bit P 1bit 1bit S: Starting Term A: Acknowledge Bit P: Ending Term ● SLAVE ADDRESS MSB LSB 1 0 0 0 0 0 1 0 ● 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. 00H→01H→02H→03H→04H→05H→06H→00H Select Address BIT D7 D6 D4 D5 00H D3 D2 D1 D0 VOL 01H CHS BAL Don’t Care 02H BCB BASS Don’t Care 03H BCT TREB Don’t Care 04H BBEL BBE Don’t Care 05H BBEH AGC AGC LVL OUT Don’t Care 06H 2 / 2.1ch SUR ● CONTROL REGISTER DEFAULT VALUE Control register default value is all “0”. Select Address BIT D7 D6 D5 D4 D3 D2 D1 D0 00H 0 0 0 0 0 0 0 0 01H 0 0 0 0 0 0 0 0 02H 0 0 0 0 0 0 0 0 03H 0 0 0 0 0 0 0 0 04H 0 0 0 0 0 0 0 0 05H 0 0 0 0 0 0 0 0 06H 0 0 0 0 0 0 0 0 – 14 – NJW1148 ● CONTROL COMMAND TABLE a) Master Volume Select Address BIT D7 D6 D5 D4 D3 D2 D1 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 BIT Select Address D7 01H CHS D6 D5 D4 D3 D2 BAL 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 BIT Select Address D7 02H BCB D6 D5 D4 D3 D2 BASS 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 BIT Select Address D7 03H BCT D6 D5 D4 D3 D2 TREB 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 BIT D7 D6 04H D5 BBEL D4 D3 D2 BBE D1 D0 Don’t Care •BBEL:BBE-LOW Level 0dB to 15dB (0.5dB/step) •BBE : BBE ON or OFF – 15 – NJW1148 g) BBE-High Select Address BIT D7 D6 05H D4 D5 D3 BBEH D2 AGC D1 D0 AGC LVL •BBEH: BBE-HIGH Level 0dB to 15dB (0.5dB/step) •AGC : AGC ON or OFF •AGC LVL : AGC Level 300mVrms, 400mVrms, 500mVrms, 600mVrms h) Surround (eala, TruSurround) BIT Select Address D7 06H 2 / 2.1ch D6 D4 D5 SUR •2 / 2.1ch : Surround Output Mode 2ch (TruSurround), 2.1ch (Center out) •SUR : Surround Mode OFF, MONO, SRS 3D, TS, eala1, 2,3,4,5,6 •OUT : Output Switch Output ON / OFF – 16 – D3 D2 OUT D1 D0 Don’t care NJW1148 ■ Master Volume (Select Address: 00H) VOL Gain(dB) HEX D7 D6 D5 D4 D3 D2 D1 D0 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 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 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 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 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 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 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 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 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 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 VOL Gain(dB) HEX D7 D6 D5 D4 D3 D2 D1 D0 -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 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 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 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 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 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 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 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 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 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 – NJW1148 ■ Balance (Select Address: 01H) Channel Setting (CHS) D7 Attenuated Bch Gain Attenuated Ach Gain 0 1 D6 D5 BAL D4 D3 D2 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 -11 -12 -13 -14 -15 -16 -17 -18 -19 -20 -21 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 -22 -23 1 1 0 0 1 1 1 1 0 1 -24 -25 -26 -27 -28 -29 -30 MUTE 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Gain(dB) – 19 – NJW1148 ■ Tone Control Bass (Select Address: 02H) Bass Cut or Boost BCB D7 Cut Boost 0 1 Cut Gain(dB) Boost Gain(dB) D6 D5 D4 D3 D2 -15 -14 -13 -12 -11 -10 -9 -8 15 14 13 12 11 10 9 8 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 -7 -6 -5 -4 -3 -2 -1 0 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 BASS ■ Tone Control Treble (Select Address: 03H) Treble Cut or Boost BCT D7 Cut Boost 0 1 Cut Gain(dB) Boost Gain(dB) D6 D5 D4 D3 D2 -15 15 1 1 1 1 0 -14 14 1 1 1 0 0 -13 13 1 1 0 1 0 -12 12 1 1 0 0 0 -11 11 1 0 1 1 0 -10 10 1 0 1 0 0 -9 9 1 0 0 1 0 -8 8 1 0 0 0 0 -7 7 0 1 1 1 0 -6 6 0 1 1 0 0 -5 5 0 1 0 1 0 -4 4 0 1 0 0 0 -3 3 0 0 1 1 0 -2 2 0 0 1 0 0 -1 1 0 0 0 1 0 0 0 0 0 0 TREB 0 – 20 – 0 NJW1148 ■ BBE-LOW Gain Code (Select Address: 04H) BBEL Gain(dB) D7 D6 D5 D4 D3 15 1 1 1 1 0 14 1 1 1 0 0 13 1 1 0 1 0 12 1 1 0 0 0 11 1 0 1 1 0 10 1 0 1 0 0 9 1 0 0 1 0 8 1 0 0 0 0 7 0 1 1 1 0 6 0 1 1 0 0 5 0 1 0 1 0 4 0 1 0 0 0 3 0 0 1 1 0 2 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0 0 ■ BBE (Select Address: 04H) BBE ON/OFF BBE D2 OFF ON 0 1 BBE-HIGH Gain Code (Select Address: 05H) BBEH Gain(dB) D7 D6 D5 D4 D3 15 1 1 1 1 0 14 1 1 1 0 0 13 1 1 0 1 0 12 1 1 0 0 0 11 1 0 1 1 0 10 1 0 1 0 0 9 1 0 0 1 0 8 1 0 0 0 0 7 0 1 1 1 0 6 0 1 1 0 0 5 0 1 0 1 0 4 0 1 0 0 0 3 0 0 1 1 0 2 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0 0 – 21 – NJW1148 ■ AGC (Select Address: 05H) AGC ON/OFF AGC D2 OFF ON 0 1 ■ AGC Level (Select Address: 05H) AGC Level 300mVrms 400mVrms 500mVrms 600mVrms AGC LVL D1 D0 0 0 1 1 0 1 0 1 2 / 2.1ch (Select Address: 06H) 2 / 2.1ch 2 / 2.1ch D7 2ch 2.1ch 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 D5 D4 D3 0 1 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 1 1 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 ■Output Switch (Select Address: 06H) Output Switch OUT D2 OFF ON 0 1 – 22 – NJW1148 ■TYPICAL CHARACTERISTICS Operating Current vs. Pow er Supply Voltage Operating Current vs. Ambient Temperature V+=9V, R L=47kΩ, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF R L=47kΩ, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 25 25 Operating Current [mA] Ta=75°C 15 Ta=-20°C 10 20 Operating Current [mA] Ta=25°C 20 5 15 10 5 0 0 -50 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 -25 Pow er Supply Voltage [V] Reference Voltage vs. Pow er Supply Voltage 8 8 Reference Voltage [V] Reference Voltage [V] 10 Ta=-20°C Ta=-20°C Ta=-20°C 2 -25 0 25 75 100 125 Voltage Gain vs. Balance Control V+=9V, R L=47kΩ, Vin(Ach)=1Vrms, f =1kHz, BW=400Hz-30kHz, VOL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 20 20 0 0 -20 -20 Voltage Gain [dB] A+Bin→Aout Voltage Gain [dB] 50 Ambient Temperature [°C] Voltage Gain vs. Volume Control Ta=-20°C, 25°C, 75°C 125 4 Pow er Supply Voltage [V] -60 100 6 0 -50 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 -40 75 2 0 V+=9V, R L=47kΩ, Vin(Ach)=1Vrms, f =1kHz, BW=400Hz-30kHz, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 50 V+=9V, R L=47kΩ, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 10 4 25 Reference Voltage vs. Ambient Temperature R L=47kΩ, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 6 0 Ambient Temperature [°C] A+Bin→Bout A+Bin→Bout A+Bin→Aout -40 Ta=-20°C, 25°C, 75°C -60 -80 -80 -100 -100 -120 -120 0 25 50 75 100 125 150 175 200 225 250 Volume Control [dec] 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Balance Control [dec] – 23 – NJW1148 ■TYPICAL CHARACTERISTICS Total Harmonic Distortion vs. Input Voltage Total Harmonic Distortion vs. Input Voltage V+=9V, R L=47kΩ, Vin(Ach), f =1kHz, BW=400Hz-30kHz, VOL=-20dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF Ta=25°C, V+=9V, R L=47kΩ, Vin(Ach), f =1kHz, BW=400Hz-30kHz, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 100 100 10 10 THD+ｎ [％] THD+ｎ [％] VOL=-30dB 1 Ta=-20°C Ta=75°C 0.1 VOL=-20dB 1 0.1 VOL=0dB Ta=25°C VOL=0dB VOL=-10dB 0.01 0.01 0.1 1 0.01 0.01 10 0.1 Input Voltage [Vrms] 1 10 Input Voltage [Vrms] Total Harmonic Distortion vs. Output Voltage Total Harmonic Distortion vs. Output Voltage V+=9V, R L=47kΩ, Vin(Ach), f =1kHz, BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF Ta=25°C, V+=9V, R L=47kΩ, Vin(Ach), f =1kHz, BW=400Hz-30kHz, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 100 100 10 10 THD+ｎ [％] THD+ｎ [％] VOL=-20dB Ta=-20°C 1 Ta=25°C 0.1 VOL=-30dB VOL=0dB VOL=-10dB 1 0.1 Ta=75°C 0.01 0.01 0.1 1 0.01 0.01 10 Output Voltage [Vrms] Channel Separation vs. Frequency 120 Ta=-20°C, 25°C, 75°C Aout , Bout 100 Bin→Aout 80 Mute Level [dB] Channel Separation [dB] 10 V+=9V, R L=47kΩ, Vin=1Vrms, BW=10Hz-30kHz, VOL=MUTE, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 120 Ain→Bout 60 40 0 0.01 Ta=-20°C, 25°C, 75°C 80 60 40 20 20 0.1 1 Frequency [kHz] – 24 – 1 Mute Level vs. Frequency V+=9V, R L=47kΩ, Vin=1Vrms, BW=10Hz-30kHz, VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 100 0.1 Output Voltage [Vrms] 10 100 0 0.01 0.1 1 Frequency [kHz] 10 100 NJW1148 ■TYPICAL CHARACTERISTICS Output Noise Voltage (OUT) vs. Frequency Voltage Gain (LINE) vs. Frequency V+=9V, R L=47kΩ, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF Ta=25°C, V+=9V, R L=47kΩ, Vin(Ach)=0.1Vrms, Vout(LINEAch), VOL=0dB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF 0 20 15 Output Noise Voltage [dBV] -20 Voltage Gain [dB] 10 Ta=-20°C, 25°C, 75°C 5 0 -5 -10 -40 -60 VOL=0dB -80 -100 -15 VOL=MUTE -20 0.01 0.1 1 10 -120 -50 100 -25 0 25 50 75 Output Noise Voltage (LINE) vs. Frequency V+=9V, RL=47kΩ, Vin(A+Bch), f=1kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=300mV, BASS=TREB=0dB, BBE=OFF, Surround=OFF 0 10 AGC=OFF Output Voltage [Vrms] -20 Output Noise Voltage [dBV] 125 AGC Output Voltage vs. Input Voltage V+=9V, R L=47kΩ, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF, Surround=OFF -40 -60 VOL=0dB -80 -100 1 Ta=, 25°C, 75°C Ta=-20°C 0.1 0.01 VOL=MUTE -120 -50 -25 0 25 50 75 100 0.001 0.001 125 0.01 AGC Output Voltage vs. Input Voltage 1 10 AGC Attack Time Response Ta=25°C, V+=9V, RL=47kΩ, Vin(A+Bch), f=1kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, BASS=TREB=0dB, BBE=OFF, Surround=OFF Ta=25°C, V+=9V, RL=47kΩ, Vin(A+Bch), f=20kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=300mV, BASS=TREB=0dB, BBE=OFF, Surround=OFF 10 2 AGC=OFF 1.5 AGC=600mV AGC=500mV AGC=400mV AGC=300mV 1 Output Voltage [V] 1 0.1 Input Voltage [Vrms] Frequency [°C] Output Voltage [Vrms] 100 Frequency [°C] Frequency [kHz] 0.1 0.01 0.5 0 -0.5 -1 -1.5 0.001 0.001 -2 0.01 0.1 Input Voltage [Vrms] 1 10 0 2 4 6 8 10 Time [msec] – 25 – NJW1148 ■TYPICAL CHARACTERISTICS Voltage Gain vs. Frequency (TONE) AGC Recovery Time Response Ta=25°C, V+=9V, R L=47kΩ, Vin(Ach)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, eala=By pass, TS=By pass 0.2 20 0.15 15 0.1 10 Voltage Gain [dB] Output Voltage [V] Ta=25°C, V+=9V, RL=47kΩ, Vin(A+Bch), f=10kHz, Vout(Ach), BW=400Hz-30kHz, VOL=0dB, BAL=0dB, AGC=300mV, BASS=TREB=0dB, BBE=OFF, Surround=OFF 0.05 0 -0.05 BASS=TREB +15dB +12dB + 9dB + 6dB 5 + 3dB 0 0dB - 3dB -5 - 6dB -0.1 -10 - 9dB -12dB -0.15 -15 -15dB -20 0.01 -0.2 0 50 100 150 200 250 300 350 400 450 500 550 600 0.1 Time [msec] Voltage Gain vs. Frequency (TONE) Ta=75°C 15 +15dB BBEL=BBEH 15 5 Ta=-20°C, 25°C, 75°C 0 0dB -5 +15dB +12dB 10 + 9dB + 6dB 5 + 3dB 0 OFF Ta=-20°C, 25°C, 75°C -5 -15 -20 0.01 Voltage Gain [dB] Voltage Gain [dB] 20 BASS=TREB Ta=-20°C -10 100 Ta=25°C, V+=9V, R L=47kΩ, Vin(Lch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, Surround=OFF Ta=25°C 10 -15dB 0.1 1 10 -10 0.01 100 0.1 1 10 100 Frequency [kHz] Frequency [kHz] Voltage Gain vs. Frequency (BBE) Phase vs. Frequency (BBE) V+=9V, R L=47kΩ, Vin(Lch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, Surround=OFF Ta=25°C, V+=9V, R L=47kΩ, Vin(Lch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, Surround=OFF 225 20 BBEL=BBEH=15dB 15 Ta=75°C 180 Ta=25°C 135 Ta=-20°C 10 5 0 BBEL=BBH=+15dB 90 Phase [deg] Voltage Gain [dB] 10 Voltage Gain vs. Frequency (BBE) Ta=25°C, V+=9V, R L=47kΩ, Vin(Ach)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, AGC=OFF, BBE=OFF, eala=By pass, TS=By pass 20 1 Frequency [kHz] BBEL=BBH=+3dB 45 3dB Step 0 -45 BBE=OFF -90 -135 -5 -180 -10 0.01 0.1 1 Frequency [kHz] – 26 – 10 100 -225 0.01 0.1 1 Frequency [kHz] 10 100 NJW1148 ■TYPICAL CHARACTERISTICS Phase vs. Frequency (MONO) Voltage Gain vs. Frequency (MONO) V+=9V, R L=47kΩ, Vin(A+Bch)=0.1Vrms, Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=MONO V+=9V, R L=47kΩ, Vin(A+Bch)=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=MONO 180 20 135 90 10 0 Phase [deg] Voltage Gain [dB] Vout(Bch) 45 Ta= -20, 25, 75°C 0 -10 -45 Ta=-20, 25, 75°C -90 Vout(Ach) -135 -180 -225 -20 -270 -315 -30 0.01 0.1 1 10 -360 0.01 100 0.1 1 Voltage Gain vs. Frequency (eala Ach) V+=9V, R L=47kΩ, Vin=0.1Vrms,Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=eala 15 15 Ain→Aout Voltage Gain [dB] Voltage Gain [dB] Ta=-20, 25, 75°C eala5 Ta=-20, 25, 75°C eala4 eala3 5 eala2 eala1 OFF -5 0.01 Ain→Ｂ out eala6 eala5 5 eala4 eala3 -5 eala2 eala1 -15 0.1 1 100 Voltage Gain vs. Frequency (eala Bch) V+=9V, R L=47kΩ, Vin=0.1Vrms,Vout(Ach), VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=eala eala6 10 Frequency [kHz] Frequency [kHz] 10 -25 0.01 100 0.1 Frequency [kHz] 1 10 100 Frequency [kHz] Voltage Gain vs. Frequency (TS2) Voltage Gain vs. Frequency (TS2.1) V+=9V, R L=47kΩ, Vin=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=TS_2ch V+=9V, R L=47kΩ, Vin=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=TS_2.1ch 20 15 15 Ain→Aout Ta=-20, 25, 75°C 10 5 Voltage Gain [dB] Voltage Gain [dB] 10 20 0 -5 -10 -15 -20 -25 -30 0.01 0 -5 -10 -15 Ain→Cout Ta= -20, 25, 75°C -20 Ain→Bout Ta= -20, 25, 75°C 0.1 Ain→Aout, Ain→Bout Ta=-20, 25, 75°C 5 -25 1 Frequency [kHz] 10 100 -30 0.01 0.1 1 10 100 Frequency [kHz] – 27 – NJW1148 ■TYPICAL CHARACTERISTICS Voltage Gain vs. Frequency (3D) DC Offset Voltage vs. Ambient Temperature (TONE) V+=9V, R L=47kΩ, By pass : VOL=0ｄB, BAL=0dB, AGC=OFF, BBE=OFF, Surround=OFF Ta=25°C, V+=9V, RL=47kΩ, Vin=0.1Vrms, VOL=0dB, BAL=0dB, BASS=TREB=0dB, AGC=OFF, BBE=OFF, Surround=3D 20 200 15 160 5 120 Space=max, Center=max, Ain→ Aout Ta=-20, 25, 75°C 0 -5 -10 Space=max, Center=min Ain→ Aout , Ta= -20, 25, 75°C Space=min, Center=max Bin→ Aout Ta=-20, 25°C -15 -20 -25 0.1 80 BASS=-15dB 40 0 TREB=+15dB, -15dB -40 -80 -120 Ta=-75°C Space=min, Center=min Ain→ Aout, Ta= -20, 25, 75°C -30 0.01 DC Offset Voltage [mV] Voltage Gain [dB] 10 BASS=+15dB -160 1 10 -200 -50 100 -25 Frequency [kHz] 200 200 160 160 120 120 80 40 BBEL=+15dB 0 -40 BBEH=+15dB 75 Ambient Temperature [°C] – 28 – -40 125 100 125 3D MONO TSV -80 -160 50 100 0 -160 25 eala6 40 -120 0 75 80 -120 -25 50 V+=9V, R L=47kΩ, By pass : VOL=0ｄB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, BBE=OFF DC Offset Voltage [mV] DC Offset Voltage [mV] V+=9V, R L=47kΩ, By pass : VOL=0ｄB, BAL=0dB, AGC=OFF, BASS=TREB=0dB, Surround=OFF -200 -50 25 DC Offset Voltage vs. Ambient Temperature (Surround) DC Offset Voltage vs. Ambient Temperature (BBE) -80 0 Ambient Temperature [°C] -200 -50 -25 0 25 50 75 Ambient Temperature [°C] 100 125 NJW1148 ■NOTE 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. – 29 –