BA7726AFS

Multimedia ICs Analog compander with vocal fader for KARAOKE BA7726AS / BA7726AFS The BA7726AS and BA7726AFS are analog companders for karaoke echo systems and have internal logarithmic compression and expansion circuits, a stereo line mixer amplifier, vocal fader function, vocal detection function, microphone ALC, microphone ON / OFF switch, and output switch. When used together with the BU9252 8-bit digital delay, these ICs form a high-grade karaoke echo system with minimum components. Applications Portable CD stereos with karaoke functions, VCRs, mini component stereo systems, LD players Features 1) Internal stereo line mixer amplifier, allowing selection of through output, left output, or right output. 2) Internal vocal elimination function, suitable for vocal faders and left and right output. 3) Echo level and loop ratio are DC-adjustable with the internal electronic volume control (EVR). 4) Internal microphone ON / OFF switch. 5) Vocal detection. 6) Internal microphone ALC function. 7) Internal anti-popping circuit. Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 14 BA7726AS BA7726AFS 1250 ∗1 Unit V 850∗2 mW °C °C – 10 ~ + 70 – 55 ~ + 125 ∗1 Reduced by 12.5mW for each increase in Ta of 1°C over 25°C. ∗2 Reduced by 8.5mW for each increase in Ta of 1°C over 25°C. Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Symbol VCC M...