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| NJM2755 4-Input / 1-Output Stereo Audio Selector s GENERAL DESCRIPTION The NJM2755 is 4 Input / 1 Output Stereo Audio Selector. The NJM2755 consists of switches and buffer operational amplifiers. Based on the internal switch op-amp technology, the NJM2755 features lower output noise, lower distortion and higher channel separation than the general Multiplexers or Analogue Switches. The NJM2755 contains compatibility with NJM2752(2in-1out SW),NJM2753(3in-1out SW). sAPPLICATIONS qLCD-TV/PDP-TV qCar Stereo qAny Audio System s FEATURES q Operating Voltage 4.7 to 10V q 4 Input / 1 Output Stereo Audio Selectors q Low Output Noise -114dBV typ. q Low Distortion 0.0009% typ. q Bipolar Technology q Package Outline SSOP16 s PACKAGE OUTLINE NJM2755V s BLOCK DIAGRAM IN1A IN1B IN2A IN2B LOGIC CNT1 CNT2 OUTA IN3A OUTB IN3B IN4A IN4B Vref V Vref GND Ver.1.1 -1- NJM2755 s PIN CONFIGURATIONS NJM2755 SSOP16 SSOP16 1 OUTA IN1A V+ IN2A CNT1 IN3A CNT2 IN4A OUTB 16 NJM2755V 2 IN1B GND IN2B Vref IN3B N.C IN4B 15 3 14 4 13 5 12 6 11 7 10 8 9 PIN.No. 1 2 3 4 5 6 7 8 SYMBOL OUTA IN1A V+ IN2A CNT1 IN3A CNT2 IN4A FUNCTION Ach Output Terminal Ach Input Terminal1 Power Supply Terminal Ach Input Terminal2 Control Switch Terminal1 Ach Input Terminal3 Control Switch Terminal2 Ach Input Terminal4 PIN.No. 9 10 11 12 13 14 15 16 SYMBOL IN4B N.C IN3B Vref IN2B GND IN1B OUTB FUNCTION Bch Input Terminal4 No Connection Bch Input Terminal3 Reference Terminal Bch Input Terminal2 GND Terminal Bch Input Terminal1 Bch Output Terminal [Reference] The NJM2755 contains compatibility with NJM2752 (2in-1out SW),NJM2753 (3in-1out SW). NJM2752 NJM2753 1 OUTA OUTB 14 1 OUTA OUTB 14 NJM2752V NJM2753V 2 IN1A V+ IN2A CNT1 N.C N.C IN1B GND IN2B Vref N.C N.C 13 2 IN1A V+ IN2A CNT1 IN3A CNT2 IN1B GND IN2B Vref IN3B N.C 13 3 12 3 12 4 11 4 11 5 10 5 10 6 9 6 9 7 8 7 8 -2- NJM2755 s ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL Supply Voltage V + RATING 12 SSOP16 1) 490 2) 630 UNIT V Power Dissipation PD NOTE 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 mW Operating Temperature Range Storage Temperature Range TOPR TSTR -40 to +85 -40 to +150 C C 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 Input Impedance Output Impedance 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) 85 90 2.4 - TYP. 9.0 10 4.5 0 0.0009 -114 (2) 8 (2.5) 100 110 100 45 MAX. 10 15 1 0.03 -100 (10) 0.5 - UNIT V mA V dB % dBV (Vrms) dBV (Vrms) dB dB V V k ICC VREF GV THD+N VNO VOM CT CS VCH VCL RIN ROUT -3- NJM2755 s TERMINAL DESCRIPTION PIN No. 2 4 6 8 9 11 13 15 SYMBOL IN1A IN2A IN3A IN4A IN4B IN3B IN2B IN1B FUNCTION Ach Input Terminal1 Ach Input Terminal2 Ach Input Terminal3 Ach Input Terminal4 Bch Input Terminal4 Bch Input Terminal3 Bch Input Terminal2 Bch Input Terminal1 EQUIVALENT CIRCUIT TERMINAL VOLTAGE V+/2 650 100k 3p 5 7 CNT1 CNT2 Control Switch Terminal1 Control Switch Terminal2 0V (GND) CNT 650 100k 1 16 OUTA OUTB Ach Output Terminal Bch Output Terminal OUTA OUTB V+/2 45 100k 12 Vref Reference Terminal V+/2 VREF 50k 650 50k 3 14 V+ GND Power Supply Terminal GND Terminal V+ V+ 0V 12k GND -4- NJM2755 sMEASUREMENT CIRCUIT 10F + 1 OUTA OUTB 16 + 10F 10F 10F + 3 V+ IN2A CNT1 IN3A CNT2 IN4A NJM2755 + 2 IN1A IN1B GND IN2B Vref IN3B N.C IN4B 15 + 14 + 100F 10F + 10F 10F 10F 4 13 5 12 + 10F + + 6 11 7 10 + 10F + 10F 8 9 -5- NJM2755 sAPPLICATION CIRCUIT 10F + 1 OUTA OUTB 16 + 10F 10F 10F + 3 V+ IN2A CNT1 IN3A CNT2 IN4A NJM2755 + 2 IN1A IN1B GND IN2B Vref IN3B N.C IN4B 15 + 14 + 100F 10F + 10F 10F 10F 4 13 5 12 + 100k + 1F 6 + 11 10F 100k 1F 10F + 7 10 + 10F 8 9 Application note: Resistor(100k) and capacitor(1F) connected to CNT1 are added to reduce pop-noise. The value of input capacitor connected to IN1A and IN2A depends on cut-off frequency(calculated by fc=1/2RC) you need. R(input impedance)=100k. -6- NJM2755 !TYPICAL CHARACTERISTICS ICC vs Supply Voltage No signal 14 7 VREF vs Supply Voltage No signal 25oC,105oC 12 10 ICC [mA] VREF[V] 8 6 4 2 0 0 2 4 6 8 10 12 14 Supply Voltage [V] 6 5 4 3 2 1 0 0 2 4 6 8 10 12 14 Supply Voltage [V] -40 to 105oC -40oC GAIN vs FrequencyV=9V, I/O: INA1-Aout 1 0.8 0.6 0.4 Gain Output [dB] 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 10 100 1000 Frequency [Hz] THD+N vs Frequency I/O: INA1-Aout 1 2.7 2.65 0.1 THD+N [%] Maximum Output Voltage [Vrms] 2.6 2.55 2.5 2.45 2.4 2.35 0.0001 10 100 1000 Frequency [Hz] 10000 100000 2.3 1 10000 100000 0.0001 0.01 10 100 THD+N vs Input Voltage BW: 400-30kHz, f=1kHz, I/O: INA1-Aout -40 to 105 C 1 THD+N [%] o -40oC 25oC 0.1 0.01 105oC 0.001 0.1 1 10 Input Voltage [Vrms] Maximum Output Voltage vs Frequency V=9V, THD=1%, I/O: INA1-Aout 0.01 -40 to 105oC 0.001 10 100 1000 10000 100000 Frequency [Hz] -7- NJM2755 !TYPICAL CHARACTERISTICS Maximum Output Voltage vs Supply Voltage THD=1%, I/O: INA1-1Aout 4 3.5 Maximum Output Voltage [Vrms] 3 2.5 2 1.5 1 0.5 0 0 2 4 6 8 10 12 14 Supply Voltage [V] Maximum Output Voltage [Vrms] 3.0 Maximum Output Voltage vs Load Resistance V=9V, THD=1%, f=1kHz, I/O: INA1-Aout / INB1-Bout 2.5 2.0 1.5 1.0 0.5 0.0 1 10 100 RL[] 1000 10000 100000 -40 -50 -60 Cross Talk[dB] -70 -80 -90 -100 Cross Talk vs Frequency V=9V, Vin=1Vrms, BW:10-80kHz, I/O: INA2-INA4/Aout, Select Channel:1ch -40 -50 -60 Cross Talk[dB] -70 -80 -90 -100 Cross Talk vs Frequency V=9V, Vin=1Vrms, BW:10-80kHz, I/O: INA2-INA4/Aout, Select Channel:1ch Rg=5.1k Rg=3.3k Rg=620 105oC 25oC -40oC Rg=0 -110 10 100 1000 Frequency [Hz] 10000 100000 -110 10 100 1000 Frequency [Hz] 10000 100000 -40 -50 Channel Separation[dB] -60 -70 -80 -90 -100 -110 10 Channel Separation vs Frequency V=9V, Vin=1Vrms, BW:10-80kHz, I/O: INB1-Aout -40 -50 Channel Separation[dB] -60 -70 Channel Separation vs Frequency V=9V, Vin=1Vrms, BW:10-80kHz, I/O: INB1-Aout Rg=5.1k Rg=3.3k Rg=620 Rg=0 -40 to 105oC -80 -90 -100 -110 100 1000 Frequency [Hz] 10000 100000 10 100 1000 Frequency [Hz] 10000 100000 -8- NJM2755 !TYPICAL CHARACTERISTICS CNT Voltage vsCross Talk V=9V, Vin=1Vrms, A-w eghit I/O: IN2A-Aout 10 0 -10 -20 -30 Cross Talk[dB] -50 -60 -70 -80 -90 -100 -110 -120 -130 1.5 -40 -40oC 25oC 105oC 10 0 -10 -20 -30 Cross Talk[dB] -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 CNT Voltage vsCross Talk V=9V, Vin=1Vrms, A-w eghit I/O: IN1A-Aout 105oC 25oC -40oC 1.7 1.9 2.1 2.3 2.5 1 1.2 1.4 1.6 1.8 2 CNT Voltage[V] CNT Voltage[V] [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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