NJM2707 Sound Enhancement Audio Processor for Compression Audio ■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE The NJM2707 is a sound enhancement audio processor designed for compression audio. It includes mode control switch (Sound enhancement mode / Bypass mode). The NJM2707 performs low noise and low distortion characteristics, and is suitable for car audio & home audio applications. NJM2707RB2 ■ FEATURES +1.8 to +13 V ! Operating Voltage ! Low Operating Circuit 0.75 mA typ.( at Sound enhancement mode VR: Max.) ! Low output noise -100dBV typ.( at Sound enhancement mode VR: Max.) ! Low THD 0.01% typ. ! Variable Surround Effect by external resistor ! Internal Mode Control Switch ! Bipolar Technology ! Package Outline TVSP10 ■ PIN CONFIGURATION 1 10 2 9 3 8 4 7 5 6 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. LIN RIN SW VREF GND V+ NFR NFL ROUT LOUT ■ BLOCK DIAGRAM (TVSP10) BYPASS LIN 1 REBIRTH FILTER 10 LOUT 9 ROUT BYPASS REBIRTH FILTER RIN 2 SW 3 8 NFL VREF 4 7 NFR 6 V+ + V GND Ver.0.1E 5 –1– NJM2707 ■ ABSOLUTE MAXIMUM RATING (Ta=25°C) PARAMETER SYMBOL RATING UNIT 14 410 V Power Supply Voltage V+ Power Dissipation PD NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting Operating Temperature Range Topr -40 ~ +85 °C Storage Temperature Range Tstg -40 ~ +125 °C mW ■ OPERATING VOLTAGE PARAMETER Operating Voltage SYMBOL TEST CONDITION V+ MIN. TYP. MAX. UNIT 1.8 9.0 13 V MIN TYP MAX ■ ELECTRICAL CHARACTERISTICS(Ta=25°C, V+=9V, unless otherwise specified) TEST CONDITION PARAMETER SYMBOL INPUT Supply Current ICC No Signal Reference Voltage VREF No Signal OUTPUT Mode VR UNIT L R 0 0 - Bypass - - 0.75 1.3 0 0 - eala Rebirth MAX - 0.75 1.3 0 0 - - - 3.65 4.15 4.65 V UNIT mA ■ AC CHARACTERISTICS(Ta=25°C, V+=9V, Vin= 1.5Vrms,f=1kHz,RL=10kΩ,unless otherwise specified) TEST CONDITION PARAMETER Maximum Input Voltage Output Noise Total Harmonic Distortion Bypass Gain –2– SYMBOL INPUT L R f=1kHz THD=1% VIN - L - VIN R f=1kHz THD=1% VIN - L - VIN R f=10kHz THD=1% VIN - L - VIN R f=10kHz THD=1% VIN - L - VIN R Rg=0Ω A-Weighted 0 0 Rg=0Ω A-Weighted 0 0 VIN=1.5Vrms f=1kHz VIN - L - VIN R VIN=0.75Vrms f=10kHz VIN - L - VIN R VIN=1.5Vrms f=1kHz VIN - L - VIN R VIM VNO THD+N GVBYP OUTPUT L R L R MIN TYP MAX - 2.2 3.0 - MAX 1.5 2.7 - Mode VR Bypass eala Rebirth Vrms Bypass - 2.2 3.0 - eala Rebirth MAX 1.0 1.6 - Bypass - - -112 (2.5) -106 (5.0) eala Rebirth MAX - -100 (10) -94 (20) Bypass - - 0.002 0.01 dBV (µVrms) % eala Rebirth MAX - 0.1 - Bypass - -1.0 0.0 1.0 dB NJM2707 TEST CONDITION PARAMETER SYMBOL eala Rebirth Gain Geala INPUT VIN=0.75Vrms f=10kHz OUTPUT Mode VR eala Rebirth MAX L R VIN - L - VIN R MIN TYP MAX UNIT 3.0 5.0 7.0 dB ■ CONTROL CHARACTERISTICS(Ta=25°C, V+=9V, unless otherwise specified) PARAMETER Mode Select Control Voltage ■ SWITCH FUNCTION MODE SW Bypass L,Open eala Rebirth H SYMBOL VMODE TEST CONDITION MIN. TYP. MAX. UNIT + V V VIN=High Level 1.2 - V VIN=Low Level 0.0 - 0.3 NOTES Input Through eala Rebirth(Stereo Input) –3– NJM2707 ■ APPLICATION CIRCUIT 10uF+ + 10uF 1 Lch Input LIN LOUT 10 10uF+ Rch Input SW 100kΩ 1uF 1uF + + 2 RIN ROUT 9 3 SW NFL 8 4 VREF NFR 7 5 GND V+ 6 Rch Output 2.2nF MAX VR:10kΩ 22kΩ MIN + 100uF –4– Lch Output + 10uF +9V NJM2707 ■ TERMINAL DESCRIPTION + (Ta=25°C, V =9V) PIN No. SYMBOL FUNCTION EQUIVALENT CIRCUIT V+ LIN RIN Lch Input Rch Input V+ 4.15V 700 100k 1 2 V+ Voltage VREF V+ 3 MODE SW V+ V+ Mode Control Switch 0V 300k 700 V+ V+ 300k V+ VREF Reference Voltage 4.15V 300k 4 –5– NJM2707 ■ TERMINAL DESCRIPTION + (Ta=25°C, V =9V) PIN No. SYMBOL FUNCTION 6 V+ Power Supply EQUIVALENT CIRCUIT Voltage V+ V+ 20k V+ 7 8 NFR NFL Rch Filter Terminal Lch Filter Terminal 4.15V 400 9 10 ROUT LOUT Rch Output Lch Output V+ 20k V+ V+ 12k V+ 4.15V [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. –6–