NJW1142A

NJW1142A www.DataSheet4U.com AUDIO PROCESSOR „GENERAL DESCRIPTION s PACKAGE OUTLINE The NJW1142A is a sound processor includes all of the functions required to process the audio signal for TV, such as tone control, balance, volume, mute, and AGC functions. Also the NJW1142A performs NJRC Surround "eala" which is regenerated 3D surround sound with only two speakers. 2 All of the internal status and variables are controlled by I C BUS interface. NJW1142AV „FEATURES h Operating Voltage 8 to 10V h Internal 4 Input Audio Selectors and Monitor Output hLow Noise VCA hNJRC Surround "eala" hSimulated Stereo 2 hVariable AGC Compression Level via I C (4-levels) hBi-CMOS Technology hPackage Outline SSOP32 sBLOCK DIAGRAM MONa AGC TONE TONE -La -Ha OUTa 0dB +4.5dB SDA SCL CVA CVB CTH CTL CSR IN1a IN2a IN3a IN4a SEL VOL1 NJRC Surround “eala” & Sim ulated Stereo VOL1 0dB TONE VOL2 I2C BUS Interface AGC IN1b IN2b IN3b IN4b SEL TONE VOL2 Bias GND Vcc +4.5dB MONb TONETONE -Hb -Lb OUTb Vref -1– NJW1142A www.DataSheet4U.com „PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IN1a IN2a IN3a IN4a MONa SR FIL TONE-Ha TONE-La LINEa OUTa CVa CVb SDA SCL GND NC IN1b 32 IN2b 31 IN3b 30 IN4b 29 MONb 28 CSR 27 TONE-Hb 26 TONE-Lb 25 LINEb 24 OUTb 23 AGC 22 CTH 21 CTL 20 Vref V+ 19 16 18 NC 17 No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol IN1a IN2a IN3a IN4a MONa SR FIL TONE-Ha TONE-La LINEa OUTa CVA CVB SDA SCL GND NC Ach Input 1 Ach Input 2 Ach Input 3 Ach In...