NJM2702 3D SURROUND AUDIO PROCESSOR ■ GENERAL DESCRIPTION The NJM2702 is a 3D surround audio processor regenerating the 3D surround sound with only two speakers. The NJM2702 is suitable for audio applications, which are speaker system for mini components, CD radio cassette, multimedia speaker systems, TV and others. ■ PACKAGE OUTLINE NJM2702D ■ FEATURES ● Operating Voltage (4.7 to 13V) ● Stereo mode • Stable center image with natural sound field • High quality Surround • Free speaker interval ● Surround control ● Internal Mode Control Switch ● Bipolar Technology ● Package Outline DIP14, DMP14, SSOP10 NJM2702M NJM2702V ■ BLOCK DIAGRAM + LIN LOUT + 3D FILTER RIN ROUT + Bypass STE REO MODE -1- NJM2702 ■ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT + Supply Voltage V 14 V Power Dissipation PD (DIP14) 500 (DMP14) 350 (SSOP10) 250 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 OUTPUT MODE VR L R 0 0 - BYPASS - 3.0 6.0 9.0 0 0 - Stereo MAX 3.0 6.0 9.0 MIN. TYP. MAX. 9.9 (3.1) 11.9 (3.9) - No Signal 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 Total Harmonic Distortion Bypass Gain -2- SYMBOL VIM VNO INPUT OUTPUT MODE VR - L R f=1kHz T.H.D.=3% VIN 0 0 VIN L R BYPASS f=100Hz T.H.D.=3% VIN 0 0 VIN L R Stereo MAX -3.8 (0.6) -1.8 (0.8) - 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) 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 0 0 VIN L R BYPASS - -1.0 0.0 1.0 T.H.D UNIT dBV (Vrms) dBV (µVrms) % GVBYP dB NJM2702 ●AC CHARACTERISTICS (V+=12V,Ta=25°C, VIN=-10dBV(316mVrms), f=1kHz,RL=4.7kΩ, unless otherwise specified) TEST CONDITION PARAMETER SYMBOL Surround Gain GVSUR INPUT OUTPUT MODE VR MIN. TYP. MAX. L R 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 f=100Hz Vin=-20dBV VIN 0 0 VIN L R Stereo MIN 3.6 5.6 7.6 MIN. TYP. MAX. UNIT dB ●CONTROL CHARACTERISTICS (V+=12V,Ta=25°C unless otherwise specified) TEST CONDITION PARAMETER Mode Select Control Voltage SYMBOL VIN= High Level VIN= Low Level VMODE ■MODE SWITCH MODE BYPASS Stereo INPUT SW L H L R - - OUTPUT MODE VR - - - 2.0 - V+ - 0.0 - 0.7 UNIT V - - - - NOTES Input Through Surround Mode (Stereo Input) -3- NJM2702 ■TERMINAL DESCRIPTION PIN NO. SYMBOL DIP14 DMP14 SSOP10 FUNCTION EQUIVALENT CIRCUIT V+ VOLTAGE V+ 31.6K 1 1 FIL Filter Input V+/2 400 2 4 8 10 - NC Test pin V+ V+ V+ 5K 2 VOL Surround VR V+/2 V+ 3 VREFIN Reference Voltage Input V+ V+/2 50k 5 V+ 50k 3 -4- NJM2702 PIN NO. SYMBOL FUNCTION 4 V+ Power Supply V+ 5 GND GND 0V DIP14 DMP14 SSOP10 6 7 EQUIVALENT CIRCUIT V+ 9 6 SW V+ VOLTAGE V+ Mode Control Switch 0V 150k 700 V+ 50 V+ 7 8 ROUT LOUT Rch Output Lch Output V+/2 50 11 12 -5- NJM2702 PIN NO. DIP14 DMP14 SSOP10 SYMBOL FUNCTION EQUIVALENT CIRCUIT V+ 9 10 RIN LIN Rch Input Lch Input V+ V+/2 700 50k 13 14 V+ VREF -6- VOLTAGE 50KB Parts No. R1 C1 C2,C5,C6,C7,C8,C9 Surround VR Value 10kΩ 0.0047µF 10µF Tolerance 5% 5% 20% C3 C4 C2 10uF/50V Parts No. 50K Value 1µF 100µF SW V+ GND 7 6 4 5 6 7 1 2 3 4 5 100uF/16V C4 ROUT VREFIN 3 8 12V RIN VOL 2 9 LOUT LIN FIL 1 10 1uF/50V C3 0.0047uF Min Max NC GND 8 C1 SW V+ 9 100uF/16V NC VREFIN 10 C4 ROUT NC 11 12V LOUT VOL 12 1uF/50V LIN NC 13 C3 Min LIN FIL 14 Max 0.0047uF C1 Lch Output Rch Input Lch Input 10K R1 Rch Output Lch Output Rch Input Lch Input Rch Output R1 10uF/50V C5 10K 10uF/50V 10uF/50V C6 10uF/50V C7 10uF/50V C8 C9 10uF/50V C5 10uF/50V 10uF/50V C6 10uF/50V C7 10uF/50V C8 C9 NJM2702 ■APPLICATION CIRCUIT C2 10uF/50V Surround VR Tolerance 20% 20% -7- NJM2702 ■TYPICAL CHARACTERISTICS Supply Current vs Supply Voltage Supply Current vs Ambient Temperature V+=1 to 18V Ta=25degrees V+=12V 6 7 STEREO 6 BYPASS 5.5 Supply current [mA] Supply Current [mA] 5 STEREO 4 BYPASS 3 5 2 4.5 1 4 0 0 5 10 15 -60 20 -40 -20 0 20 40 60 80 100 Ambient Temperature [degrees] Supply Voltage [V] Maximum Input Voltage vs Supply Voltage (BYPASS) Maximum Input Voltage vs Supply Voltage (STEREO) Vin=Lch Vout=Lch f=1KHz RL=47Kohm Rg=25ohm Ta=25degrees Vin=Lch Vout=Lch f=100Hz RL=47Kohm Rg=25ohm Ta=25degrees 5 15 Maximum Input Voltage [dBV] Maximum Input Voltage [dBV] 0 10 5 0 -5 -10 -15 -5 -20 2 4 6 8 10 12 2 14 4 6 Supply Voltage [V] 14 V+=12V Vin=GND Vout=Rch -90 -90 STEREO -95 -95 -100 Output Noise [dBV] Output Noise [dBV] 12 Output Noise vs Ambient Temperature V+=12V Vin=GND Vout=Lch -105 BYPASS -110 -115 STEREO -100 -105 BYPASS -110 -115 -40 -20 0 20 40 60 Ambient Temperature [degrees] -8- 10 Supply Voltage [V] Output Noise vs Ambient Temperature -120 -60 8 80 100 -120 -60 -40 -20 0 20 40 60 Ambient Temperature [deg] 80 100 NJM2702 ■TYPICAL CHARACTERISTICS Total Harmonic Distortion vs Input Voltage (BYPASS) Total Harmonic Distortion vs Input Voltage (BYPASS) V+=12V f=1KHz RL=47Kohm Rg=25ohm BW=10 to 80KHz 10 10 1 1 Ta=85deg THD+N [%] THD+N [%] V+=12V f=100Hz RL=47Kohm Rg=25ohm BW=10 to 80KHz Ta=25deg 0.1 Ta=-40deg Ta=85deg 0.1 Ta=25deg Ta=-40deg 0.01 0.01 0.001 -50 -40 -30 -20 -10 0 10 0.001 -50 20 -40 -30 -20 -10 10 20 Input Voltage [dBV] Input Voltage [dBV] Total Harmonic Distortion vs Input Voltage (STEREO) Total Harmonic Distortion vs Input Voltage (STEREO) V+=12V f=100Hz RL=47Kohm Rg=25ohm BW=10 to 80KHz V+=12V f=1KHz RL=47Kohm Rg=25ohm BW=10 to 80KHz 1 1 THD+N [%] 10 THD+N [%] 10 Ta=85deg Ta=25deg Ta=85deg Ta=25deg Ta=-40deg Ta=-40deg 0.1 0.1 0.01 -50 -40 -30 -20 -10 0 0.01 -50 10 -40 -30 Input Voltage [dBV] -10 0 10 Voltage Gain vs Frequency Response (BYPASS) V+=12V Vin=-10dBV Rch Vout=Rch RL=47Kohm Rg=25ohm V+=12V Vin=-10dBV Lch Vout=Lch RL=47Kohm Rg=25ohm 3 -20 Input Voltage [dBV] Voltage Gain vs Frequency Response (BYPASS) 3 2 2 Ta=-40deg Ta=-40deg 1 Voltage Gain [dB] Voltage Gain [dB] 0 Ta=25deg Ta=85deg 0 -1 -2 1 Ta=25deg Ta=85deg 0 -1 -2 -3 10 100 1000 Frequency [Hz] 4 10 5 10 -3 10 100 1000 4 10 5 10 Frequency [Hz] -9- NJM2702 ■TYPICAL CHARACTERISTICS 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 Ta=-40deg. Ta=25deg Ta=85deg 8 Ta=25deg. 5 Input Voltage [dB] Voltage Gain [dB] 10 6 4 Ta=85deg. 0 -5 -10 2 -15 0 -2 -20 10 100 4 1000 5 10 10 10 100 10 4 1000 10 5 Frequency [Hz] Frequency [Hz] Voltage Gain vs SW Control Voltage DC Offset Voltage vs Ambient Temperature V+=12V Vin=-10dBV Lch f=100Hz Vout=Lch BYPASS --> STEREO V+=12V Vout=Lch 6.1 14 12 Ta=85deg. DC Offset Voltage [V] Voltage Gain [dB] BYPASS 6.05 10 Ta=25deg. 8 Ta=-40deg. 6 4 STEREO 6 5.95 2 0 -2 0 0.5 1 1.5 2 2.5 5.9 -60 -40 -20 0 20 40 60 80 100 Ambient Temperature [degrees] Control Voltage [V] DC Offset Voltage vs Ambient Temperature V+=12V Vout=Rch 6.1 DC Offset Voltage [V] STEREO BYPASS 6.05 6 5.95 5.9 -60 -40 -20 0 20 40 60 Ambient Temperature [degrees] - 10 - 80 100 [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.