NJM2701 3D SURROUND AUDIO PROCESSOR ■ GENERAL DESCRIPTION The NJM2701 is a 3D surround audio processor regenerating the 3D surround sound with only two speakers. The NJM2701 is suitable for audio applications, which are speaker system for mini components, CD radio cassette, multimedia speaker systems, TV and others. ■PACKAGE OUTLINE NJM2701D NJM2701M ■ FEATURES ● Operating Voltage 4.7 to 13V ● Stereo mode • Stable center image and Natural sound field • High quality Surround • Free speaker interval ● Monaural mode (Mono-to-Stereo Synthesis) ● Surround control (Stereo mode only) ● Internal Mode Control Switch ● Bipolar Technology ● Package Outline DIP14, DMP14 ■ BLOCK DIAGRAM + LIN LOUT + FILTER for Stereo & Monaural mode RIN + ROUT Bypass STEREO MODE MONO MODE -1- NJM2701 ■ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT + Supply Voltage V 14 V Power Dissipation PD (DIP14) 500 (DMP14) 350 mW Operating Temperature Range Topr -40 to +85 °C Storage Temperature Range Tstg -40 to +125 °C ■ OPERATING VOLTAGE PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Voltage V+ - 4.7 12.0 13.0 V MIN. TYP. MAX. UNIT ■ELECTRICAL CHARACTERISTICS (V+=12V,Ta=25°C unless otherwise specified) TEST CONDITION PARAMETER Operating Current SYMBOL INPUT ICC No Signal OUTPUT MODE VR L R 0 0 - BYPASS - 2.9 5.7 8.6 0 0 - Stereo MAX 2.9 5.8 8.7 0 0 - Mono - 3.0 5.9 8.9 MIN. TYP. MAX. mA ●AC CHARACTERISTICS (V+=12V,Ta=25°C, VIN=-10dBV(316mVrms), f=1kHz,RL=4.7kΩ, unless otherwise specified) TEST CONDITION PARAMETER Maximum Input Voltage Output Noise -2- SYMBOL VIM VNO INPUT OUTPUT MODE VR L R f=1kHz T.H.D.=3% VIN 0 0 VIN L R BYPASS - 9.9 (3.1) 11.9 (3.9) - f=100Hz T.H.D.=3% VIN 0 0 VIN L R Stereo MAX -3.8 (0.6) -1.8 (0.8) - f=1kHz T.H.D.=3% VIN VIN 0 0 L R Mono - 6.9 (2.2) 8.9 (2.8) - Rg=0Ω A-Weighted 0 0 L R BYPASS - - -112 (2.5) -106 (5.0) Rg=0Ω A-Weighted 0 0 L R Stereo MAX - -100 (10) -94 (20) Rg=0Ω A-Weighted 0 0 L R Mono - - -103 (7.1) -97 (14.1) UNIT dBV (Vrms) dBV (µVrms) NJM2701 ●AC CHARACTERISTICS (V+=12V,Ta=25°C, VIN=-10dBV(316mVrms), f=1kHz,RL=4.7kΩ, unless otherwise specified) TEST CONDITION PARAMETER SYMBOL INPUT Bypass Gain GVSUR VR MIN. TYP. MAX. R f=1kHz VIN 0 0 VIN L R BYPASS - - 0.005 0.01 f=1kHz Vin=-20dBV VIN 0 0 VIN L R Stereo MAX - 0.1 0.5 f=1kHz VIN VIN 0 0 L R Mono - - 0.1 0.5 f=1kHz VIN 0 0 VIN L R BYPASS - -1.0 0.0 1.0 f=100Hz Vin=-20dBV VIN 0 0 VIN L R Stereo MAX 10.7 12.7 14.7 f=100Hz Vin=-20dBV 0 VIN VIN 0 L R Stereo MAX 8.4 10.4 12.4 GVBYP Surround Gain MODE L T.H.D Total Harmonic Distortion OUTPUT UNIT % dB dB f=100Hz Vin=-20dBV VIN 0 0 VIN L R Stereo MIN 3.6 5.6 7.6 f=1kHz VIN VIN 0 0 L R Mono - 1.0 3.0 5.0 MIN. TYP. MAX. ● CONTROL CHARACTERISTICS (V+=12V,Ta=25°C unless otherwise specified) TEST CONDITION PARAMETER Mode Select Control Voltage SYMBOL VMODE ■MODE SWITCH MODE BYPASS Stereo Mono SW1 L H H INPUT VIN= High Level VIN= Low Level SW2 L H OUTPUT MODE VR L R - - - - - 2.0 - V+ - - - - - 0.0 - 0.7 UNIT V NOTES Input Through Surround Mode (Stereo Input) Surround Mode (Mono Input) -3- NJM2701 ■TERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT V+ VOLTAGE V+ 31.6K 1 FIL1 Filter Input V+/2 400 V+ V+ 20K 2 FIL2 Filter Input V+/2 400 V+ V+ V+ 5K 3 VOL Surround VR V+/2 TEST1 TEST2 Test pin V+/2 50 4 10 V+ 50 V+ -4- NJM2701 PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT V+ V+ 50k V+ VOLTAGE 5 VREFIN Reference Voltage Input 6 V+ Power Supply V+ 7 GND GND 0V 50k V+/2 V+ SW2 SW1 V+ Mode Control Switch 0V 700 150k 8 9 V+ -5- NJM2701 PIN NO. SYMBOL FUNCTION EQUIVALENT CIRCUIT ROUT LOUT Rch Output Lch Output V+/2 50 11 12 V+ 50 V+ VOLTAGE V+ RIN LIN Rch Input Lch Input V+ V+/2 700 50k 13 14 V+ VREF -6- NJM2701 10K 7 Max C3 50KB 100uF/16V 6 C4 C5 SW2 GND 5 12V SW1 V+ 4 10uF/50V 10K 10uF/50V R1 TEST2 VREFIN 3 1uF/50V ROUT TEST1 2 Min 1 0.027uF VOL 8 LOUT 10uF/50V C6 R2 Rch Output Lch Output 10uF/50V C7 Rch Input 10uF/50V C8 9 RIN 10 FIL2 11 LIN 12 FIL1 13 0.0047uF C2 C1 14 10uF/50V C9 C10 Lch Input ■APPLICATION CIRCUIT C1 10uF/50V Surround VR Note) In case of monaural mode (mono to stereo synthesis), input monaural signal into left channel input terminal (LIN). Parts No. R1,R2 C1 C2 Value 10kΩ 0.0047µF 0.027µF Tolerance 5% 5% 5% Parts No. C3 C4 C5,C6,C7,C8,C9,C10,C11 Value 1µF 100µF 10µF Tolerance 20% 20% 20% -7- NJM2701 ■TYPICAL CHARACTERISTICS Supply Current vs SupplyVoltage Supply Current vs Ambient Temperature V+=1 to 18V Ta=25degrees V+=12V 7 6 MONO MONO STEREO 6 BYPASS 5.5 Supply Current [mA] Supply Current [mA] 5 STEREO BYPASS 4 3 5 2 4.5 1 0 4 0 5 10 15 20 -60 -40 Supply Voltage [V] -20 0 20 40 60 80 100 Ambient Temperature [degrees] Maximum Input Voltage vs Supply Voltage (STEREO) Maximum Input Voltage vs Supply Voltage (BYPASS) Vin=Lch Vout=Lch f=1KHz RL=47Kohm Rg=25ohm Ta=25degrees Vin=Lch Vout=Lch f=1KHz RL=47Kohm Rg=25ohm Ta=25degrees 15 5 Maximum Input Voltage [dBV] Maximum Input Voltage [dBV] 0 10 5 0 -5 -10 -15 -5 -20 2 4 6 8 10 12 14 Supply Voltage [V] Vin=Lch Vout=Lch f=1KHz RL=47Kohm Rg=25ohm Ta=25degrees Maximum Input Voltage [dBV] 10 5 0 -5 -10 2 4 6 8 10 Supply Voltage [V] -8- 4 6 8 10 Supply Voltage [V] Maximum Input Voltage vs Supply Voltage (MONO) 15 2 12 14 12 14 NJM2701 ■TYPICAL CHARACTERISTICS Output Noise vs Ambient Temperature Output Noise vs Ambient Temperature V+=12V Vin=GND Vout=Lch V+=12V Vin=GND Vout=Rch -90 -90 STEREO -95 STEREO Output Noise [dBV] MONO -100 Output Noise [dBV] -95 -105 BYPASS -110 -100 MONO -105 BYPASS -110 -115 -115 -120 -60 -40 -20 0 20 40 60 80 -120 -60 100 -40 Ambient Temperature [degrees] 20 40 60 80 100 Total Harmonic Distortion vs Input Voltage (BYPASS) V+=12V f=100Hz RL=47Kohm Rg=25ohm BW=10 to 80KHz 10 10 1 1 Ta=85deg THD+N [%] THD+N [%] 0 Ambient Temperature [degrees] Total Harmonic Distortion vs Input Voltage (BYPASS) 0.1 -20 Ta=25deg Ta=-40deg 0.01 0.001 V+=12V f=1KHz RL=47Kohm Rg=25ohm BW=10 to 80KHz 0.1 Ta=85deg Ta=25deg 0.01 Ta=-40deg 0.001 0.0001 -50 -40 -30 -20 -10 0 10 20 0.0001 -50 30 -40 -30 -20 -10 0 10 20 30 Input Voltage [dBV] Input Voltage [dBV] Total Harmonic Distortion vs Input Voltage (STEREO) Total Harmonic Distortion vs Input Voltage (STEREO) V+=12V f=1KHz RL=47Kohm Rg=25ohm BW=10 to 80KHz V+=12V f=100Hz RL=47Kohm Rg=25ohm BW=10 to 80KHz 10 10 THD+N [%] 1 THD+N [%] 1 Ta=85deg Ta=25deg Ta=85deg Ta=25deg Ta=-40deg Ta=-40deg 0.1 0.01 -50 0.1 -40 -30 -20 -10 Input Voltage [dBV] 0 10 0.01 -50 -40 -30 -20 -10 0 10 Input Voltage [dBV] -9- NJM2701 ■TYPICAL CHARACTERISTICS Total Harmonic Distortion vs Input Voltage (MONO) Total Harmonic Distortion vs Input Voltage (MONO) V+=12V f=100Hz RL=47Kohm Rg=25ohm BW=10 to 80KHz V+=12V f=1KHz RL=47Kohm Rg=25ohm BW=10 to 80KHz 10 10 1 1 Ta=85deg THD+N [%] THD+N [%] Ta=85deg. Ta=25deg. Ta=-40deg. Ta=25deg Ta=-40deg 0.1 0.1 0.01 -50 -40 -30 -20 -10 0 10 0.01 -50 20 -40 -30 Input Voltage [dBV] -20 -10 Input Voltage Voltage Gain vs Frequency Response (BYPASS) 20 V+=12V Vin=-10 dBV Rch V out= Rch RL=47Kohm Rg=25ohm 3 3 2 2 Ta=-40deg Ta=-40deg 1 Voltage Gain [dB] Voltage Gain [dB] 10 Voltage Gain vs Frequency Response (BYPASS) V+=12V Vin=-10dBV Lch Vout=Lch RL=47Kohm Rg=25ohm Ta=25deg Ta=85deg 0 -1 -2 1 Ta=25deg Ta=85deg 0 -1 -2 -3 -3 10 100 1000 4 10 5 10 10 100 1000 10 4 10 5 Frequency [Hz] Frequency [Hz] Voltage Gain vs Frequency Response (STEREO) Voltage Gain vs Frequency Response (STEREO) V+=12V Vin=-20dBV Lch Vout=Lch RL=47Kohm Rg=25ohm V+=12V Vin=-20dBV Lch Vout=Rch RL=47Kohm Rg=25ohm 14 15 12 10 Ta=-40deg 10 Ta=-40deg. Ta=25deg Ta=85deg 8 Ta=25deg. 5 Input Voltage [dB] Voltage Gain [dB] 0 [dBV] 6 4 Ta=85deg. 0 -5 -10 2 -15 0 -2 -20 10 100 1000 Frequency [Hz] - 10 - 4 10 5 10 10 100 1000 Frequency [Hz] 4 10 5 10 NJM2701 ■TYPICAL CHARACTERISTICS Voltage Gain vs Frequency Response (MONO) Voltage Gain vs Frequency Response (MONO) V+=12V Vin=-10dBV Lch Vout=Lch RL=47Kohm Rg=25ohm V+=12V Vin=-10dBV Lch Vout=Rch RL=47Kohm Rg=25ohm 6 6 5 5 Ta=25deg. 4 Voltage Gain [dB] Voltage Gain [dB] Ta=-40deg. Ta=85deg. 3 2 1 Ta=25deg. Ta=85deg. 3 2 1 0 0 10 100 4 1000 5 10 10 10 100 4 1000 5 10 10 Frequency [Hz] Frequency [Hz] Voltage Gain vs SW1 Control Voltage Voltage Gain vs SW2 Control Voltage V+=12V Vin=-10dBV Lch f=100Hz Vout=Lch BYPASS --> STEREO V+=12V Vin=-10dBV Lch f=100Hz Vout=Lch STEREO --> MONO 14 14 12 12 Voltage Gain [dB] Ta=85deg. 10 Voltage Gain [dB] Ta=-40deg. 4 Ta=25deg. 8 Ta=-40deg. 6 4 10 Ta=85deg. Ta=25deg. 8 Ta=-40deg. 6 4 2 2 0 -2 0 0 0.5 1 1.5 2 2.5 0 0.5 1 Control Voltage [V] 1.5 2 2.5 Control Voltage [V] DC Offset Voltage vs Ambient Temperature DC Offset Voltage vs Ambient Temperature V+=12V Vout=Rch V+=12V Vout=Lch 4 6 BYPASS 2 BYPASS DC Offset Voltage [mV] DC Offset Voltage [mV] 4 2 0 STEREO -2 MONO 0 STEREO -2 MONO -4 -4 -6 -6 -8 -8 -60 -40 -20 0 20 40 60 Ambient Temperature [degrees] 80 100 -60 -40 -20 0 20 40 60 80 100 Ambient Temperature [degrees] [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. - 11 -