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| NJM2704 PRELIMINARY 3D SURROUND AUDIO PROCESSOR FOR HEADPHONE s GENERAL DESCRIPTION The NJM2704 is a high quality 3D surround audio processor designed for headphone applications. It includes mode control switches for surround function and standby function and realizes low consumption power design by standby function. In addition to SSOP14, ultra small and thin package FFP12 (Flip-chip Fine Package) is applied. It is suitable for portable telephone, PDA and any portable audio applications. s PACKAGE OUTLINE NJM2704V NJM2704PB1 s FEATURES q Operating Voltage q Low Operating Current 1.8 to 6V 0.45mA typ. (at Active mode) 0.1A typ. (at Standby mode) q Low Output Noise 10V typ. (at Surround mode, VR: max.) q Variable Surround Effect by external resistor q Internal Mode Control Switch q Bipolar Technology q Package Outline SSOP14, FFP12 s PIN CONFIGURATION 9 8 7 10 11 12 6 5 4 1 2 3 (FFP12) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. VREF MODE SW RIN LIN STANDBY SW LOUT ROUT NFL NFR V+ DNC GND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. STANDBY SW LIN RIN MODE SW VREF GND NC DNC V+ NFL NFR ROUT LOUT NC (SSOP14) -1- NJM2704 s BLOCK DIAGRAM NFR 9 3D FILTER V+ 10 3D FILTER NFL 8 ROUT 7 STEREO BYPASS 6 STEREO BYPASS LOUT DNC 11 BIAS 5 STANDBY S W GND 12 4 LIN 1 VREF 2 MODE SW 3 RIN -2- NJM2704 sABSOLUTE MAXIMUM RATING (Ta=25C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range sOPERATING VOLTAGE PARAMETER Operating Voltage SYMBOL V+ TEST CONDITION MIN. 1.8 TYP. 3.0 MAX. 6.0 UNIT V SYMBOL V + RATINGS 7 320 -20 to +75 -40 to +125 UNIT V mW C C PD Topr Tstg - sELECTRICAL CHARACTERISTICS (V+=3V, Ta=25C unless otherwise specified) TEST CONDITION PARAMETER Operating Current Reference Voltage SYMBOL ICC No Signal 0 Vref No Signal 0 0 0 Standby 1.0 0.1 1.15 1.0 1.3 V INPUT L 0 R 0 MIN. OUTPUT MODE Active VR 450 700 TYP. MAX. UNIT A qAC CHARACTERISTICS (V+=3V, Ta=25C, VIN=-20dBV(100mVrms), f=1kHz, RL=10k, unless otherwise specified) TEST CONDITION PARAMETER Maximum Input Voltage SYMBOL VIM INPUT L f=1kHz T.H.D.=1% f=100Hz T.H.D.=1% V+=1.8V f=1kHz T.H.D.=1% V+=1.8V f=100Hz T.H.D.=1% Output Noise VNO Rg=0 A-Weighted Rg=0 A-Weighted Total Harmonic Distortion T.H.D f=1kHz VIN 0 VIN 0 VIN 0 VIN 0 0 R 0 VIN 0 VIN 0 VIN 0 VIN 0 MIN. OUTPUT L R L R L R L R L R L R L R L R MODE VR -2.0 (790) -16.0 (160) -8.5 (380) -22.5 (75) -112 (2.5) -100 (10) 0.02 TYP. MAX. UNIT Bypass - - - Surround MAX -10.5 (300) -24.5 (60) - dBV (mVrms) - Bypass - Surround MAX -106 (5.0) -94 (20) 0.05 % Bypass - dBV (Vrms) 0 VIN 0 VIN 0 0 0 VIN 0 VIN Surround MAX - Bypass - - f=1kHz Surround MAX - 0.1 0.5 -3- NJM2704 qAC CHARACTERISTICS (V+=3V, Ta=25C, VIN=-20dBV(100mVrms), f=1kHz, RL=10k, unless otherwise specified) TEST CONDITION PARAMETER Bypass Gain SYMBOL GVBYP f=1kHz Surround Gain GVSUR f=100Hz INPUT L VIN 0 VIN 0 0 VIN VIN 0 R 0 VIN 0 VIN VIN 0 0 VIN MIN. OUTPUT L R L R L R L R MODE VR TYP. MAX. UNIT Bypass - -1.0 0.0 1.0 dB Surround MAX 12.5 14.5 16.5 f=100Hz Surround MAX 10.5 12.5 14.5 dB f=100Hz Surround MIN 0.5 2.5 4.5 qCONTROL CHARACTERISTICS (V+=3V, Ta=25C unless otherwise specified) TEST CONDITION PARAMETER SYMBOL VIN= High Level VIN= Low Level INPUT L Mode Select Control Voltage R MIN. OUTPUT MODE VR 1.2 0.0 V+ V 0.3 TYP. MAX. UNIT VMODE sSWITCH FUNCTION MODE SW MODE Bypass Surround Terminal Status L, open H NOTES Input Through Surround Mode (Stereo Input) STANDBY SW MODE Standby Active Terminal Status L, open H NOTES IC is non-active IC is active -4- NJM2704 sTERMINAL DESCRIPTION PIN No. SYMBOL FFP12 SSOP14 FUNCTION EQUIVALENT CIRCUIT V+ V+ V+ Voltage 1 5 VREF Reference voltage 300k 1.15V V+ V+ 300k V+ 2 4 MODE SW Mode control switch 700 300k 0V V+ V+ V+ 3 4 3 2 RIN LIN Rch Input Lch Input 1.15V 700 100k VREF V+ V+ 5 1 STANDBY SW Standby switch 700 75k 225k 0V -5- NJM2704 PIN No. FFP12 SSOP14 SYMBOL FUNCTION V+ EQUIVALENT CIRCUIT V+ V+ V+ Voltage 6 7 13 12 LOUT ROUT Lch Output Rch Output 20k 1.15V 12k V+ V+ 8 9 11 10 NFL NFR Filter terminal Filter terminal 400 20k 1.15V 10 9 V+ Power Supply V+ - 7 14 NC No Connect - 11 8 DNC Do Not Connect - -6- NJM2704 sAPPLICATION CIRCUIT FFP12 MIN VR 50kB MA X 4.7k Rch OUT 0.0047 0.0047 10 9 NFR 10 V+ 11 DNC STANDBY S W 5 STANDBY SW V+ 8 NFL 7 ROUT LOUT 6 Lch OUT 12 GND VREF 1 1 MODE S W RIN 2 100k MODE S W 1 3 LIN 4 0.1 Lch IN Rch IN 0.1 SSOP14 STANDBY S W 1 STANDBY SW NC 14 0.1 Lch IN 0.1 Rch IN 3 RIN ROUT 12 Rch OUT 0.0047 2 LIN LOUT 13 Lch OUT 100k MODE S W 1 1 5 VREF NFR 10 4 MODE SW NFL 11 4.7k 0.0047 MAX MIN VR 50kB 10 6 GND V+ 9 V+ 7 NC DNC 8 -7- NJM2704 sTYPICAL CHARACTERISTICS Supply Current vs. Supply Voltage Ta=25degrees 0.7 0.6 0.5 Supply Current [mA] Supply Current [mA] 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5 6 7 Surround BYPASS 0.7 0.6 0.5 0.4 0.3 0.2 0.1 Supply Current vs. Ambient Temperature V+=3V BYPASS Surround 0 -50 -25 0 25 50 75 100 125 Supply Voltage [V] Ambient Temperature [degrees] Reference Voltage vs. Supply Voltage Ta=25degrees 3.5 3 2.5 2 1.5 1 0.5 0 0 1 2 3 4 5 6 7 1.3 Reference Voltage vs. Ambient Temperature V+=3V 1.25 Reference Voltage [V] Reference Voltage [V] 1.2 1.15 1.1 1.05 1 -50 -25 0 25 50 75 100 125 Supply Voltage [V] Ambient Temperature [degrees] Maximum Input Voltage vs. Supply Voltage (BYPASS) Vin=Lch f=1kHz Vout=Lch RL=10kohm THD=1% Ta=25degrees 10 Maximum Input Voltage vs. Supply Voltage (Surround) Vin=Lch f=100Hz Vout=Lch RL=10kohm VR=MAX THD=1% Ta=25degrees -5 Maximum Input Voltage [dBV] 0 Maximum Input Voltage [dBV] 0 1 2 3 4 5 6 7 5 -10 -15 -5 -20 -10 -25 -15 -30 0 1 2 3 4 5 6 7 Supply Voltage [V] Supply Voltage [V] -8- NJM2704 sTYPICAL CHARACTERISTICS Maximum Input Voltage vs. Ambient Temperature (BYPASS) V+=3V Vin=Lch f=1kHz Vout=Lch RL=10kohm THD=1% 0 Maximum Input Voltage vs. Ambient Temperature (Surround) V+=3V Vin=Lch f=100Hz Vout=Lch RL=10kohm VR=MAX THD=1% -15 Maximum Input Voltage [dBV] -2 Maximum Input Voltage [dBV] -25 0 25 50 75 100 125 -1 -16 -17 -3 -18 -4 -19 -5 -50 -20 -50 -25 0 25 50 75 100 125 Ambient Temperature [degrees] Ambient Temperature [degrees] Maximum Input Voltage vs. Ambient Temperature (BYPASS) V+=1.8V Vin=Lch f=1kHz Vout=Lch RL=10kohm THD=1% -5 Maximum Input Voltage vs. Ambient Temperature (Surround) V+=1.8V Vin=Lch f=100Hz Vout=Lch RL=10kohm VR=MAX THD=1% -20 Maximum Input Voltage [dBV] -7 Maximum Input Voltage [dBV] -25 0 25 50 75 100 125 -6 -21 -22 -8 -23 -9 -24 -10 -50 -25 -50 -25 0 25 50 75 100 125 Ambient Temperature [degrees] Ambient Temperature [degrees] Output Noise Voltage vs. Ambient Temperature V+=3V Rg=0ohm Vout=Lch VR=MAX FILTER=A-Weighted -90 Output Noise Voltage vs. Ambient Temperature V+=3V Rg=0ohm Vout=Rch VR=MAX FILTER=A-Weighted -90 -95 Output Noise Voltage [dBV] Output Noise Voltage [dBV] -95 -100 -100 -105 Surround -105 Surround -110 BYPASS -115 -110 BYPASS -115 -120 -50 -25 0 25 50 75 100 125 -120 -50 -25 0 25 50 75 100 125 Ambient Temperature [degrees] Ambient Temperature [degrees] -9- NJM2704 sTYPICAL CHARACTERISTICS Total Harmonic Distortion vs. Input Voltage (BYPASS) V+=3V Vin=Lch f=1kHz Vout=Lch RL=10kohm BW=10Hz to 80kHz 10 Total Harmonic Distortion vs. Input Voltage (Surround) V+=3V Vin=Lch f=100Hz Vout=Lch RL=10kohm BW=10Hz to 80kHz VR=MAX 10 1 1 THD+N [%] Ta=75deg. Ta=25deg. Ta=-20deg. THD+N [%] 0.1 0.1 0.01 Ta=75deg. Ta=25deg. Ta=-20deg. 0.001 -50 -40 -30 -20 -10 0 10 0.01 -50 -40 -30 -20 -10 0 Input Voltage [dBV] Input Voltage [dBV] Voltage Gain vs. Frequency (BYPASS) V+=3V Vin=-20dBV Lch Vout=Lch RL=10kohm Rg=25ohm 1 20 Voltage Gain vs. Frequency (Surround) V+=3V Vin=-20dBV Lch Vout=Lch RL=10kohm Rg=25ohm VR=MAX Ta=75deg. Ta=25deg. Ta=-20deg. 15 0.5 Ta=-20deg. Voltage Gain [dB] Ta=25deg. Ta=75deg. 0 Voltage Gain [dB] 10 5 -0.5 0 -1 10 100 1000 Frequency [Hz] 10 4 10 5 -5 10 100 1000 Frequency [Hz] 10 4 10 5 Voltage Gain vs. Frequency (Surround) V+=3V Vin=-20dBV Rch Vout=Lch RL=10kohm Rg=25ohm VR=MAX 15 20 Voltage Gain vs. Frequency (Surround) V+=3V Vin=-20dBV Lch Vout=Lch RL=10kohm Rg=25ohm VR=MIN 10 Ta=75deg. Ta=25deg. Ta=-20deg. Voltage Gain [dB] 15 Voltage Gain [dB] 5 10 Ta=75deg. Ta=25deg. 5 Ta=-20deg. 0 -5 0 -10 10 100 1000 Frequency [Hz] 10 4 10 5 -5 10 100 1000 Frequency [Hz] 10 4 10 5 - 10 - NJM2704 sTYPICAL CHARACTERISTICS Voltage Gain vs. SW Terminal Input Voltage V+=3V Vin=-20dBV Lch f=100Hz Vout=Lch VR=MAX BYPASS to Surround 20 Output DC Offset Voltage vs. Ambient Temperature V+=3V BYPASS to Surround 10 Output DC Offset Voltage [mV] 15 5 Voltage Gain [dB] 10 Ta=75deg. Ta=25deg. Ta=-20deg. Lch 0 Rch -5 5 0 -5 0 0.5 1 1.5 2 -10 -50 -25 0 25 50 75 100 125 SW Terminal Input Voltage [V] 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 - |
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