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| NJM2754 4in-1out Audio Selector with Isolation amplifier ! GENERAL DESCRIPTION The NJM2754 is 4In-1out stereo audio Selector with ground noise isolation amplifiers. It contains dual channel differential amplifier. It is developed for those car audio applications where long connections between head unit and other components are necessary and ground noise has to be eliminated. ! FEATURES *4in-1out Stereo Audio Selector *Operating Voltage *Operating Current *Common mode rejection ratio *Maximum Output Voltage *Supply Voltage Rejection Ratio *Total Harmonic Distortion *Noise Output Voltage *Bipolar Technology *Package Outline ! BLOCK DIAGRAM IN1A+ IN1AIN1B+ IN1BIN2A+ Diff IN2IN2B+ Diff OUTA ! PACKAGE OUTLINE NJM2754V 4.3 to 12V 14mA(typ.) CMRR=60dB typ. 2Vrms min., @ THD=0.1% 60dB typ. 0.003% typ. 1.7Vrms typ. SSOP20 Diff LOGIC Diff CNT1 CNT2 IN3A+ IN3IN3B+ IN4A+ Diff OUTB Diff Ach Diff V IN4IN4B+ Diff Bch Vref Vref GND Ver.2008-06-23 -1- NJM2754 !PIN CONFIGURATION 1 OUTA V+ 20 2 OUTB Vref 19 3 IN1A+ NJM2754 GND 18 4 IN1A- IN4A+ 17 5 IN1B- IN4- 16 6 IN1B+ IN4B+ 15 7 CNT1 CNT2 14 8 IN2A+ IN3A+ 13 9 IN2- IN3- 12 10 IN2B+ IN3B+ 11 No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 SYMBOL OUTA OUTB IN1A+ IN1AIN1BIN1B+ CNT1 IN2A+ IN2IN2B+ IN3B+ IN3IN3A+ CNT2 IN4B+ IN4IN4A+ GND Vref V+ FUNCTION Ach Output Bch Output Ach +Input 1 Ach -Input1 Bch -Input1 Bch +Input 1 CONTROL 1 Ach +Input 2 -Input2 Bch +Input 2 Bch +Input 3 -Input3 Ach +Input 3 CONTROL 2 Bch +Input 4 -Input4 Ach +Input 4 Ground Reference Voltage Power Supply -2- NJM2754 !ABSOLUTE MAXIMUM RANGES (Ta=25C) PARAMETER Supply Voltage Maximum Input Voltage SYMBOL V + RANGE +15 0 to V SSOP20 : 700(1) 950(2) (1)EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting (2) EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 4layer, FR-4) mounting UNIT V V VIM +() Power Dissipation Operating Temperature Storage Temperature PD Topr Tstg mW C C -40 to +85 -40 to +150 !ELECTRICAL CHARACTERRISTIC (V+=9V,Ta=25C) PARAMETER DCCHARACTERRISTIC SYMBOL + TEST CONDITION MIN. 4.3 TYP. 9 14 4.3 0.0 110 110 105 90 2.5 1.7 0.003 60 2 65 - MAX. 12 20 4.8 +1.0 0.5 125 2.5 0.01 V + UNIT V mA V dB dB dB dB kHz k Vrms Vrms % dB Vrms dB V V Operating Voltage Operating Current Reference Voltage Voltage Gain Cross Talk Channel Separation Channel Balance Roll-off High Frequency Input Resistance Output Resistance Maximum Output Voltage Noise Output Voltage Total Harmonic Distortion Common Mode Rejection Ratio Common Mode Input Voltage Supply Voltage Rejection Ratio Switch-ON Voltage Level Switch-OFF Voltage Level V ICC VREF No Signal 3.8 -1.0 AC CHARACTERRISTIC (Non-inverting circuit, f=1kHz, Vin=1Vrms, Rg=0, RL=10k unless otherwise specified Gv CT CS BAL fRH RIN ROUT VOM VNO THD CMRR Vicm SVR VCH VCL CMRR=50dB f=100Hz , Vripple=100mVrms VCNT=High Level VCNT=Low Level THD=0.1%, f = 1kHz Rg=600, A-weighted f=1kHz , VIN=1Vrms, BW=400Hz to 30kHz -1dB f=1kHz,A-Weighted f=1kHz,A-Weighted 100 90 100 85 2 50 55 2.3 - 0.8 -3- NJM2754 !SWITCH CONTROL LOGIC CNT2 CNT1 Input Ach / Bch L L H H L H L H 1 2 3 4 -4- NJM2754 !APPLICATION CIRCUIT 10F 1 10F 2 10F 10F 4 10F 5 10F 6 IN1B+ IN1BIN1AOUTB Vref 19 OUTA V+ 20 10F 3 IN1A+ NJM2754 10F GND 18 10F IN4A+ 17 10F IN4- 16 10F 15 IN4B+ 7 10F 8 10F 9 10F 10 CNT1 CNT2 14 10F 13 10F IN2A+ IN3A+ IN2- IN3- 12 10F 11 IN2B+ IN3B+ -5- NJM2754 !TYPICAL CHARACTERISTICS ICC vs Supply Voltage No signal Vref vs Supply Voltage No signal, T=105,85,50,25,-20,-40oC 16 14 12 10 ICC [mA] 8 6 4 2 0 0 2 o o 7 6 5 Vref [V] 105 C 85 C 50 C 25 C -20 C o -40 C 4 6 8 10 12 Supply Voltage [V] o o o 4 3 2 1 0 0 2 4 6 8 Supply Voltage [V] 10 12 Gain Output vs Frenquancy V+=9V, Vin=1Vrms, INA1-Aout, Non-Inverting circuit T=105,85,50,25,-20,-40oC Volume Gain output vs Frequency V+=9V, Vin=1Vrms, INA1-Aout, Inverting circuit 10 8 6 4 Gain Output [dB] 2 0 -2 -4 -6 -8 -10 10 100 1000 Frequancy [Hz] Maximum Output Voltage vs Supply Voltage V=+9V, THD=0.1%, INA1-Aout, Non-Inverting circuit, T=105,85,50,25,-20,-40oC 10 8 6 4 Gain Output [dB] 2 0 -2 -4 -6 -8 -10 10000 100000 T=105,85,50,25,-20,-40oC 10 100 1000 Frequency [Hz] 10000 100000 Maximum Output Voltage vs Supply Voltage V=+9V, THD=0.1%, I/O: INA1-Aout, Reversing circuit T=105,85,50,25,-20,-40oC 4.0 3.5 Maximum Output Voltage [Vrms] Maximum Output Voltage [Vrms] 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.0 2.5 2.0 1.5 1.0 0.5 0.0 4 5 6 7 8 9 10 11 12 Supply Voltage [V] 4 5 6 7 8 9 10 11 12 Supply Voltage [V] -6- NJM2754 !TYPICAL CHARACTERISTICS CMR vs Frequancy V+=9V, Vin=1Vrms, OUTA, T=105,85,50,25,-20,-40oC CMR vs Input Voltage V+=9V, f=1kHz, BW:400Hz-30kHz, OUTA, T=105,85,50,25,-20,-40oC -40 -45 -50 -55 CMR [dB] -60 -65 -70 -75 -80 -85 -90 10 100 1000 Freequancy [Hz] Channel Separation vs Frequency V=+9V, Vin=1Vrms, BW:10-80kHz, I/O: INB1+-outA, Non-reversing circuit,T=105,85,50,25,-20,-40oC 0 -40 C -20 C 25 C CMR [dB] o o o o -10 -20 -30 -40 C -20 C 25 C 50 C 85,105 C o o o o o 50,-105 C -40 -50 -60 -70 -80 -90 -100 0.001 10000 100000 0.01 0.1 Input Voltage [Vrms] 1 10 Channel Separation vs Frequency V=+9V, Vin=1Vrms, BW:10-80kHz, I/O: INB1--outA, Reversing circuit,T=105,85,50,25,-20,-40oC 0 0 -20 Channel Separation[dB] -20 Channel Separation[dB] -40 Rg=5.1k Rg=3.3k Rg=620 -40 Rg=5.1k Rg=3.3k -60 -60 Rg=620 -80 -80 -100 -100 Rg=0 -120 10 100 1000 Frequency [Hz] Cross Talk vs Frequency V=+9V, Vin=1Vrms, BW:10-80kHz,Non-reversing circuit I/O: INA2+,INA3+,INA4+,/OutA, T=105,85,50,25,-20,-40oC Rg=0 -120 100000 10000 10 100 1000 Frequency [Hz] 10000 100000 Cross Talk vs Frequency V=+9V, Vin=1Vrms, BW:10-80kHz,Reversing circuit II/O: INA2-,INA3-,INA4-,/OutA, T=105,85,50,25,-20,-40oC -40 -40 Rg=5.1k -60 Cross Talk[dB] Rg=5.1k -60 Rg=3.3k Cross Talk[dB] Rg=3.3k Rg=620 -80 Rg=620 -80 -100 -100 Rg=0 -120 10 100 1000 Frequency [Hz] 10000 100000 Rg=0 -120 10 100 1000 Frequency [Hz] 10000 100000 -7- NJM2754 !TYPICAL CHARACTERISTICS THD+N vs Input Voltage (Non-reversing circuit) V=+9, BW:10-22kHz(f=100Hz), 400-30kHz(f=1kHz, 10kHz), I/O: INA1+,/OutA, T=105,85,50,25,-20,-40 C o THD+N vs Input Voltage (Reversing circuit) V=+9V, BW:10-22kHz(f=100Hz), 400-30kHz(f=1kHz, 10kHz), I/O: INA1-,/OutA, T=105,85,50,25,-20,-40oC 10 10 1 1 THD+N [%] THD+N [%] f=100Hz 0.1 f=100Hz 0.1 f=1kHz,10kHz f=1kHz,10kHz 0.01 0.01 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 Input Voltage [Vrms] THD+N vs Frequency V= +9V, f=1kHz, BW:10-80kHz, Vin=1Vrms , I/O: INA1-1Aout, T=105,85,50,25,-20,-40 C o Input Voltage [Vrms] RippleRejection vs Frequency Vrp=100mV, f=100Hz, Rg=600,V+=9V, T=25oC 10 0 -10 1 THD+N [%] -20 Reversing circuit 0.1 Ripple Rejection [dB] 100000 -30 -40 -50 -60 Non-reversing circuit 0.01 0.001 -70 0.0001 10 100 1000 Frequency [Hz] 10000 -80 10 100 1000 Frequency [Hz] RippleRejection vs Signal source resistance V+=9V, Vrp=100mV, f=100Hz, T=25oC 10000 100000 RippleRejection vs Supply Voltage Vrip=100mV, f=100Hz, T=25oC 0 -10 -20 Ripple Rejection [dB] Ripple Rejection [dB] 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -30 -40 -50 -60 -70 -80 -90 -100 0 5 10 15 Supply Voltage [V] -100 0.1 1 10 Signal source resistance [k] 100 -8- NJM2754 !TYPICAL CHARACTERISTICS NOISE vs Signal source resistance V=+9V, A-Weighting, f=1kHz, T=25oC, Non-Inverting Output Voltage vs Load Resistance V= +9V, f=1kHz, I/O: INA1-outA T=105,85,50,25,0,-20,-40oC 0 10 8 Maximum Output Voltage [Vrms] -20 6 4 2 0 -2 -4 -6 -8 -10 Output Noise [dBV] -40 -60 -80 -100 -120 0.1 1 10 Signal source resistance [k] 100 100 1000 RL[] 10000 100000 [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. -9- |
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