NJW1139A

NJW1139A www.DataSheet4U.com AUDIO PROCESSOR with Sound Enhancement and TruSurround s GENERAL DESCRIPTION The NJW1139A is a sound processor with BBE sound enhancement and TruSurround virtualizer. It includes all of functions processing audio signal for TV, such as tone control, balance, volume, mute, simulated stereo and AGC functions. 2 All of internal status and variables are controlled by I C BUS interface. s PACKAGE OUTLINE NJW1139AGK1 s FEATURES q Operating Voltage 8 to 13V 2 q I C BUS Interface q Bass Boost Function Adjustable bass boost level 0 to +13dB q AGC Circuit (It reduces volume difference among input sources) 2 Adjustable compression level by I C BUS q BBE Sound Enhancement System q TruSurround / SRS 3D Stereo / Simulated Stereo q Bi-CMOS Technology q Package Outline SOP40-K1 s BLOCK DIAGRAM AGC LF1 LF2 LF3 TONE TONE BBE1a BBE2a -Ha -La OUTa SDA IN a VOL1 BBE TONE VOL2 SCL CVA CVB CLB CTH CTL CBH CBL CSR GND Vcc AGC VOL1 Bass Boost Bass Level TruSurround & SRS 3D Stereo & Sim ulated Stereo BBE TONE VOL2 I C BUS Interface 2 IN b VOL1 Bias BBE1b BBE2b TONETONE -Hb -Lb OUTb Vref - 1 - B NJW1139A www.DataSheet4U.com s PIN DISCRIPTION INa LF1 LF2 LF3 3D1 3D2 3D3 3D4 BBE1a BBE2a TONE-Ha TONE-La OUTa AGC CLB CVA CVB SDA SCL GND No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol INa LF1 LF2 LF3 3D1 3D2 3D3 3D4 BBE1a BBE2a TONE-Ha TONE-La OUTa AGC CLB CVA CVB SDA SCL GND Ach Input Bass Boost Filiter1 Bass Boost Filiter2 Bass Boost Filit...