BA3641FV

Audio ICs Recording amplifier with built-in ALC for headphone stereos BA3641FV The BA3641FV is an option IC developed for the purpose of adding a recording function to 1-chip playback system ICs (BA3612AKV, etc.) for headphone stereos. FApplications Headphone stereos with recording function FFeatures 1) Two built-in microphone amplifier channels. 2) Microphone mute function (radio / microphone switching). 3) Two built-in recording amplifier channels (with ALC). 4) Two built-in monitor output amplifier channels (radio / microphone switching). 5) Built-in regulators for the erase head and bias OSC circuit. FAbsolute maximum ratings (Ta = 25_C) FRecommended power supply voltage ranges (Ta = 25_C) 326 Audio ICs FBlock diagram BA3641FV 327 Audio ICs FPin descriptions BA3641FV 328 Audio ICs BA3641FV 329 Audio ICs BA3641FV FElectrical characteristics (unless otherwise noted, Vcc = 2.3V, RF = 2.0V, +B = 1.2V, VREF = 1.0V, RL = 5kΩ, F f = 1kHz, DIN-AUDIO, Ta = 25_C) 330 Audio ICs BA3641FV 331 Audio ICs FMeasurement circuit BA3641FV FSwitch logic table 332 Audio ICs FApplication example BA3641FV 333 Audio ICs FElectrical characteristic curves BA3641FV 334 Audio ICs BA3641FV 335 Audio ICs FExternal dimensions (Units: mm) BA3641FV 336 ...