NJW1168 Datasheet | New Japan Radio

PRELIMINARY AUDIO PROCESSOR with Input Selector and Subwoofer Output .. s GENERAL DESCRIPTION The NJW1168 is a sound processor with subwoofer output includes all of functions processing audio signal for TV, such as input selector, tone control, balance, volume, mute, and AGC functions. Also the NJW1168 includes the LPF for subwoofer output and bass boost function. The eala reproduces a natural surround sound with clear vocal orientation. And also, voice enhancement gives clear sound such as dialogs. 2 All of internal status and variables are controlled by I C BUS interface. s PACKAGE OUTLINE NJW1168L s Features q Operating Voltage 7.5 to 13V q 3ch Output(Lch, Rch, Subwoofer ch) / 2ch Output(Lch, Rch) q 4ch Input Selector q LPF Filter (Adjustable cut off frequency by external parts) q AGC Circuit (It reduces volume difference among input sources.) 2 Adjustable AGC pression level by I C BUS q eala(NJRC Original Surround System) q Simulated Stereo q Voice Enhancement System 2 q I C BUS Interface q Bi-CMOS Technology q Package Outline SDIP42 s BLOCK DIAGRAM VOL1 Tone Voice Enhancement Simulated Stereo VOL2 I C Bus Interface VOL1 eala & VOL2 Trimmer Tone VOL2 Bias -1- PRELIMINARY s PIN FUNCTION 42 22 .. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 SYMBOL IN1a IN2a IN3a IN4a MONa CMON LF1 OUTw VE-FIL3 VE-FIL2 VE-FIL1 CVE TONE-Ha TONE-La OUTa CVa AUX0 AUX1 SDA SCL GND FUNCTION A ch Input 1 A ch Input 2 A ch Input 3 A ch Input 4 A ch Input Selector Monitor Output MONa/b switching noise rejection Capacitor Low Pass Filter Capacitor 1 Sub Woofer Output Voice Enhancement Filter Capacitor 3 Voice Enhancement Filter Capacitor 2 Voice Enhancement Filter Capacitor 1 VE switching noise rejection Capacitor Ach TONE Treble Filter Capacitor Ach TONE Bass Filter Capacitor Ach Output Ach Volume switching noise rejection Capacitor Auxiliary Output 0 Auxiliary Output 1...