TA8211AH

TA8211AH TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8211AH Dual Audio Power Amplifier The TA8211AH is dual audio power amplifier for consumer applications. This IC provides an output power of 6 watts per channel (at VCC = 20 V, f = 1 kHz, THD = 10%, RL = 8 Ω). It is suitable for power amplifier of TV and home stereo. Features · · High output power: Pout = 6 W/channel (Typ.) (VCC = 20 V, RL = 8 Ω, f = 1 kHz, THD = 10%) Low noise: Vno = 0.14 mVrms (Typ.) (VCC = 28 V, RL = 8 Ω, GV = 34dB, Rg = 10 kΩ, BW = 20 Hz~20 kHz) · · · Very few external parts Built in thermal shut down protector circuit Operating supply voltage range: VCC (opr) = 10~30 V (Ta = 25°C) Weight: 4.04 g (typ.) Block Diagram VCC 6 Ripple Filter INPUT1 4 8 5 3 1 11 AMP2 INPUT2 2 IN2 OUT2 12 RL 400 W Pre-GND 400 W 20 kW PW-GND 10 20 kW RL IN1 AMP1 OUT1 7 9 VCC 1 2002-02-13 TA8211AH Application Information Voltage gain The closed loop voltage gain is determined by R1, R2. Input 4/2 5/1 8/11 R2 400 W R1 20 kW 7/12 Output GV R + R2 (dB) = 20 log 1 R2 = 20log 20 kW + 400 W 400 W ~ - 34 (dB) Figure 1 Input 4/2 5/1 8/11 R2 400 W R1 20 kW 7/12 Output (a) Amplifier with gain > 34dB R + R 2 //R 3 (dB) G V = 20 log 1 R 2 //R 3 When R3 = 400 W GV ~ - 40 (dB) is given. (b) Amplifier with gain < 34dB G V = 20 log R1 + R 2 + R 4 (dB) R2 + R4 Input 4/2 R4 5/1 8/11 Figure 2 When R4 = 220 W GV ~ - 30 (dB) is given. R2 400 W R1 20 kW 7/12 Output Figure 3 Cautions This IC is not proof enough a...