TA2025F

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2025P,TA2025F TA2025P / F Low Noise Preamplifier For Autoreverse Car Stereo The TA2025P, TA2025F contains dual amplifier, forward, reverse control switches and metal, normal tape equalizer control switches. Feature · High voltage gain : GVO = 100dB (typ.) (VCC = 9V, f = 1kHz) · No input coupling capacitor · Low noise (equivalent noise voltage) : VNI = 0.6µVrms (typ.) (VCC = 9V, Rg = 620Ω､ BW = 20Hz~20kHz, NAB EQ) · Low distortion: THD = 0.01% (typ.) · Operating supply voltage range: VCC (opr.) = 6~16V Block Diagram Weight DIP16−P−300−2.54A: 1.00g (typ.) SSOP16−P−225−1.00A: 0.14g (typ.) 1 2002-10-30 Application Information 1. Forward, reverse select switch (1) Threshold voltage Pin(3) is coupled to the base of Q1 (PNP-Tr) as shown in Fig.1. Threshold voltage (pin(3)) = 0.7V Reverse Forward 0~0.5V 1.0~VCC (2) The recommended forward, reverse select circuit is shown in Fig.2. TA2025P / F (3) I3 (in Fig.1) I3 = 12µA (max., Ta = 25°C) 2. Equalizer control switch Pin(15) is coupled to the base of Q2 (PNP-Tr) as shown in Fig.3. The emitter potential of Q2 is 3.9V (DC). Threshold voltage (pin(15)) = 2.8V Metal Normal 3.2~16V 0~2.4V 3. C2 / C3 / C4 / C5 Capacitor C2~C5 may be required for preventing a instability caused by the pattern layout or interference of external high frequency signal. Maximum Ratings (Ta = 25°C) Characteristic Symbol Rating Unit Supply voltage Power dissipation Operating temperat...