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| NJM2750 4 INPUT / 1 OUTPUT STEREO AUDIO SELECTOR s GENERAL DESCRIPTION The NJM2750 is 4 Input / 1 Output Stereo Audio Selector. Based on the internal Switch OP-AMP technology, the NJM2750 has lower Output Noise, lower Distortion and higher Channel Separation than the ordinary Multiplexers or Analogue Switches. The NJM2750 is suitable for any kinds of audio equipments, such as TV, Car Stereo, Mini-Compo and so on. s PACKAGE OUTLINE NJM2750M s FEATURES q Operating Voltage (4.7 to 13V) q 4 Input / 1 Output Audio Selectors q Dual Channel for Stereo Use q Low Output Noise (-110dBV typ.) q Low Distortion (0.005% typ.) q Bipolar Technology q Package Outline (DMP16) s BLOCK DIAGRAM s PIN CONFIGURATION IN1a 1 16 15 V+ GND OUTa V+ IN3a Vref OUTb (N.C.) IN3b CNT1 2 IN2a 3 LOGIC bias 14 13 12 11 10 9 CNT2 4 IN4a IN1b IN2b IN4b 5 6 7 8 PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SYMBOL IN1a CNT1 IN2a CNT2 IN4a IN1b IN2b IN4b IN3b (N.C.) OUTb Vref IN3a V+ OUTa GND FUNCTION Ach INPUT SELECTOR CONTROL 1 Ach INPUT SELECTOR 2 CONTROL 2 Ach INPUT SELECTOR 4 Bch INPUT SELECTOR 1 Bch INPUT SELECTOR 2 Bch INPUT SELECTOR 4 Bch INPUT SELECTOR 3 NO CONNECT Bch OUTPUT REFERENCE VOLTAGE Ach INPUT SELECTOR 3 POWER SUPPLY Ach OUTPUT GROUND -1- NJM2750 s ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range V + RATING 15 300 -40 to +85 -40 to +125 + UNIT V mW C C PD TOPR TSTR s ELECTRICAL CHARACTERISTICS ( Ta=25C, V =9V) PARAMETER Operating Voltage Supply Current Reference Voltage Voltage Gain Total Harmonic Distortion Output Noise Voltage Maximum Output Voltage Cross Talk Channel Separation Switch-ON Voltage Level Switch-OFF Voltage Level s SWITCH CONTROL LOGIC CNT2 CNT1 INPUT SELECTOR Ach / Bch L L H H L H L H 1 2 3 4 SYMBOL V + TEST CONDITION No Signal Vin=1Vrms, f=1kHz Vin=1Vrms, f=1kHz A-Weighted f=1KHz, THD=1% Vin=1Vrms, f=1kHz, A-Weighted Vin=1Vrms, f=1kHz, A-Weighted MIN. 4.7 -1 6 (2.0) 70 70 2.4 - TYP. 9.0 10 4.5 0 0.005 -110 (3) 8 (2.5) 90 90 - MAX. 13.0 20 1 0.05 -100 (10) 0.8 UNIT V mA V dB % dBV (Vrms) dBV (Vrms) dB dB V V ICC VREF GV THD+N VNO VOM CT CS VCH VCL -2- NJM2750 s TERMINAL DESCRIPTION PIN No. 1 3 5 6 7 8 9 13 2 4 SYMBLE IN1a IN2a IN4a IN1b IN2b IN4b IN3b IN3a CNT1 CNT2 EQUIVALENT CIRCUIT V+ VOLTAGE V+/2 NOTE 180 IN1a IN2a IN3a IN4a IN1b IN2b IN3b IN4b 100K VREF GND V+ 0V (GND) 180 CNT1 CNT2 100K GND 11 15 OUTb OUTa V+ V+/2 OUTa OUTb 30 GND 12 Vref V+ V+/2 45K Vref 30 60K GND 14 16 V+ GND V+ V+ 0V GND -3- NJM2750 s APPLICATION CIRCUIT + 0.1uF 10k IN1a CNT1 1 2 3 4 5 6 7 8 LOGIC bias V+ 16 15 14 13 12 11 10 9 GND 100k OUTa V+ + + 4.7uF + 10uF + 0.1uF IN2a CNT2 9V 10k IN3a Vref OUTb + 0.1uF 100uF + 10uF + 0.1uF IN4a IN1b IN2b IN4b + 10uF + 0.1uF + 100k 4.7uF + 0.1uF (N.C.) IN3b + 0.1uF + 0.1uF -4- NJM2750 s TYPICAL CHARACTERISTICS Supply Current vs Supply Voltage Voltage Gain vs Frequency Response Ta=25C 10 9 8 Supply Current [mA] Voltage Gain [dB] V+=9V Vin=1Vrms Ta=25C Ach. 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 7 6 5 4 3 2 1 0 0 5 10 Supply Voltage [V] 15 10 10 100 100 1K 10K 1000 10000 Frequency [Hz] 100K 100000 Total Harmonic Distortion vs Input Voltage V+=9V Ta=25C Ach. Cross Talk vs Frequency Response 10 120 110 100 V+=9V Vin=1Vrms A-Weighted Ta=25C Ach. 1 Cross Talk [dB] THD+N[] 90 80 70 60 50 40 30 20 10 f=1kHz -30 -20 -10 Input Voltage [dBV] 0 10 0 10 10 100 100 1000 10000 1k 10k Frequency [Hz] 100000 100k 0.1 f=20Hz f=20kHz 0.01 0.001 -40 Channel Separation vs Frequency Response V+=9V Vin=1Vrms A-Weighted Ta=25C Ach.in Bch.out 120 110 100 Channel Separation [dB] 90 80 70 60 50 40 30 20 10 0 10 10 100 100 1000 10000 1k 10k Frequency [Hz] 100000 100k -5- NJM2750 s TYPICAL CHARACTERISTICS Supply Current vs Ambient Temperature Voltage Gain vs Ambient Temperature 10 9 8 Supply Current [mA] V+=9V 1 0.8 0.6 Voltage Gain [dB] V+=9V Vin=1Vrms f=1kHz Ach. 7 6 5 4 3 2 1 0 -100 -50 0 50 100 Ambient Temperature [C] 150 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -100 -50 0 50 100 Ambient Temperature [C] 150 Total Harmonic Distortion vs Ambient Temperature Output Noise Voltage vs Ambient Temperature V+=9V Vin=1Vrms f=1kHz Ach. 1 0 -10 Total Harmonic Distortion [%] Output Noise Voltage [dBV] V+=9V Rg=0A-Weighted Ach. -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 0.1 0.01 0.001 -100 -50 0 50 100 Ambient Temperature [C] 150 -120 -100 -50 0 50 100 Ambient Temperature [C] 150 Maximum Output Voltage vs Ambient Temperature Cross Talk vs Ambient Temperature V+=9V f=1kHz at THD+N =1% Ach. 10 Maximum Output Voltage [dBV] 120 110 100 V+=9V Vin=1Vrms f=1kHz A-Weighted Ach. 9 Cross Talk [dB] 90 80 70 60 50 40 30 20 10 8 7 6 -100 -50 0 50 100 Ambient Temperature [C] 150 0 -100 -50 0 50 100 Ambient Temperature [C] 150 -6- NJM2750 s TYPICAL CHARACTERISTICS Channel Separation vs Ambient Temperature V+=9V Vin=1Vrms f=1kHz A-Weighted Ach.in Bch.out 120 110 100 Channel Separation [dB] 90 80 70 60 50 40 30 20 10 0 -100 -50 0 50 100 Ambient Temperature [C] 150 [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. -7- |
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