BH3866AS

Video ICs Dual-line serial control sound processor IC BH3866AS The BH3866AS is a signal processing IC developed for the control of volume and tone quality in TV equipment. Since dual-line serial control (I2C BUS) is used, the volume level and tone quality in TV equipment can be changed using signals such as those from a microcomputer or similar device. Applications DVDs, personal computers, high-vision TVs, karaoke sets, digital broadcasts, CATVs, and other TV equipment Features 1) 3-channel volume and sound quality control (for stereo and center speakers). 2) Absorption of volume deviation between input sources and improved S / N ratio, for better sound quality, using an AGC circuit. 3) Control through I2C BUS serial control. 4) Internal pseudo-stereo circuit provides phase-shift matrix surround effect. Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 10.0 1250∗ – 25 ~ + 75 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 12.5mW for each increase in Ta of 1°C over 25°C. Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Symbol VCC Min. 7.0 Typ. — Max. 9.5 Unit V 1 Video ICs BH3866AS Block diagram BGAIN MSIN ADD 32 31 30 29 28 27 26 10k 50k – – 25 MIX OFF BASS 24 23 22 21 20 19 18 SCV COUT STT LOUT VCC CB CIN CT BIN LB LIN LT 17 VCC + Volume Volume CIN L+R 10k 50k + CSEL OFF MIX ON Tone (bass / treble) ...