Audio ICs Pre-power amplifier for headphone stereos BA3612AKV The BA3612AKV is configured of a pre-amplifier and a headphone amplifier, and contains internal AMS, B.B, AVLS, and BEEP amplifier functions. Also, this IC can be used in combination with the BA3641FV to enable configuration of recording and playback sets. Applications Portable cassette players Features 1) Low current consumption. 2) Internal AMS function. 3) Internal B.B function. 4) Internal AVLS function. 5) Internal BEEP amplifier. 6) Supports Dolby-B. 7) Supports OCL output. Absolute maximum ratings (Ta = 25C) Recommended operating conditions (Ta = 25C) 355 Audio ICs Block diagram 356 BA3612AKV Audio ICs BA3612AKV Pin descriptions (The pin voltage of VCC = 2.3V, B = 1.3V is the standard value for the measurement circuit under quiescent conditions. Modes: PWR-ON, TC, FWD, NOR, Mute-OFF, B.B-OFF, AVLS-OFF) 357 Audio ICs 358 BA3612AKV Audio ICs BA3612AKV 359 Audio ICs 360 BA3612AKV Audio ICs BA3612AKV 361 Audio ICs 362 BA3612AKV Audio ICs BA3612AKV Electrical characteristics (unless otherwise noted, B = 1.3V, VCC = 2.3V, f = 1kHz, PreOutRL = 5kΩ, PWROutRL = 16Ω (OCL), Ta = 25C, and measurement condition pertaining to ripple: VCC and B are common-mode input) 363 Audio ICs BA3612AKV (unless otherwise noted, B = 1.3V, VCC = 2.3V, f = 1kHz, PreOutRL = 5kΩ, PWROutRL = 16Ω (OCL), Ta = 25C, and measurement condition pertaining to ripple: VCC and B are common-mode input) 364 Audio ICs BA3612AKV (unless otherwise noted, B = 1.3V, VCC = 2.3V, f = 1kHz, PreOutRL = 5kΩ(OCL), PWROutRL = 16Ω (OCL), Ta = 25C) 365 Audio ICs BA3612AKV Conditions applied to control pins (Unless otherwise noted, B = 0.9V, VCC = 1.7V, f = 1kHz, PreOutRL = 5kΩ ,PWROutRL = 16Ω (OCL), Ta = 25C) 366 Audio ICs BA3612AKV Measurement circuit 367 Audio ICs Electrical characteristic curves External dimensions (Units: mm) 368 BA3612AKV