NJW1148

www.DataSheet4U.com NJW1148 Audio Processor with Sound Enhancement and TruSurround Virtualizer I GENERAL DESCRIPTION The NJW1148 is an audio processor with BBE sound enhancement and SRS Labs' TruSurround virtualizer. It includes all of functions processing audio signal for TV, such as volume, balance, mute, line out, tone control, eala NJRC surround and simulated stereo functions. All of 2 internal status and variables are controlled by I C BUS. I FEATURES G Operating Voltage 8 to 10 V 2 G I C BUS Interface (Fast-Mode) G Passive TruSurround G BBE 0dB to +15dB(0.5dB/step) G eala (surround effect ; 2 steps) and Simulated Stereo GVolume 0 to -80dB, MUTE(0.33dB/step) GBalance 0 to -30dB, MUTE(1dB/step) GTone Control -15dB to +15dB(0.5dB/step) G Bi-CMOS Technology G Package Outline QFP48-P1 I BLOCK DIAGRAM TS filter I PACKAGE OUTLINE NJW1148FP1 DataSheet4U.com BBECHA BBECLA LINEOUTA TONECHA TONECLA OUTA GND V+ DataShee Bias VREF MIXOUT INA AGC VOL1 Passive Matrix TruSurround / SRS 3D Stereo / eala / Simulated Stereo VOL1 BBE TONE VOL2 Buffer VOL2 LFIN LFOUT OUTC I C Interface & Logic Control INB BBE TONE VOL2 CAP BBECHB BBECLB TONECHB TONECLB OUTB DataSheet4U.com –1– TS filter SDA SCL AGCTC LINEOUTB eala filter 2 www.DataSheet4U.com NJW1148 I PIN FUNCTION 38 25 39 24 48 15 1 14 et4U.com No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DataSheet4U.com SYMBOL FUNCTION TruSurround Filter Capacitor 3 TS3 Ach Input INA Ach BBE Hi...