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1 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 (I 2 C 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. ā¢ Applications DVDs, personal computers, high-vision TVs, karaoke sets, digital broadcasts, CATVs, and other TV equipment ā¢ 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 I 2 C BUS serial control. 4) Internal pseudo-stereo circuit provides phase-shift matrix surround effect. ā¢ Recommended operating conditions (Ta = 25Ā°C) ā¢ Absolute maximum ratings (Ta = 25Ā°C) Parameter Symbol Min.Typ.Max.Unit Power supply voltage V CC 7.0ā9.5V ParameterSymbolLimitsUnit Power supply voltageV CC10.0V Power dissipation1250 ā mW Operating temperatureToprĀ°C Storage temperatureTstgĀ°C Pd ā 25 ~ + 75 ā 55 ~ + 125 ā Reduced by 12.5mW for each increase in Ta of 1Ā°C over 25Ā°C.
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