NJM2754

NJM2754 www.DataSheet4U.com 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. 1.7µVrms 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 www.DataSheet4U.com !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 +...