TA8211AH
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8211AH
Dual Audio Power Amplifier
The 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...