TA2069AF

www.DataSheet4U.com TA2069AF TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2069AF 3V Stereo Headphone Amplifier (3V USE) The TA2069AF is developed for play−back stereo headphone equipments (3V use). It is built in dual preamplifiers, dual OCL power amplifiers, motor governor, DC volume control and volume limiter etc. Features · Built−in preamplifier Input coupling condenser−less Built−in input capacitor for reducing buzz noise Low noise: Vni = 1.2 µVrms (typ.) Built−in power amplifier OCL (output condenser−less) Voltage gain : GV = 31dB (typ.) Built−in motor governor Current proportion type Built−in DC volume control function DC volume maximum attenuation : ATT = 82dB (typ.) Built−in volume limiter function Built−in bass boost function Operating supply voltage range (Ta = 25°C) PRE + PW: VCC (opr) = 1.8~3.6V GVN: VCC (opr) = 2.1~3.6V (motor voltage = 1.8V) Low supply current (VCC = 3V, f = 1kHz, Ta = 25°C, typ.) PRE + PW Output Power 0.1mW × 2 14.2mA 12.5mA 0.5mW × 2 19.5mA 16.5mA · Weight: 0.32g (typ.) · · · · · · No Signal RL = 16Ω RL = 32Ω 9.5mA 9.5mA GVN: ICC = 2.5mA 1 2002-10-30 www.DataSheet4U.com TA2069AF Block Diagram OFF M ON VREF INB NFB 24 23 22 PRE OUTB 21 20 PW INB 19 RF IN 18 VLIM VCC GVN VCC Rt 17 16 15 14 GVN CTL 13 GVN OUT RIPPLE PREB VOL. VREF LIMITER FILTER VOL. PW B PREA VOL. CONTROL PW A PW C 1 PRE GND 2 INA 3 NFA 4 PRE OUTA 5 PW INA 6 VCTL 7 OUTB 8 OUTA 9 10 OUTC PW INC 11 PW GND 12 GV...