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参数资料
| 型号： | TA2170FLG |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.02 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24 |
| 封装： | 5 X 5 MM, 0.50 MM PITCH, PLASTIC, QON-24 |
| 文件页数： | 10/13页 |
| 文件大小： | 231K |
| 代理商： | TA2170FLG |
TA2170FLG
2006-04-19
6
(2)
2-input mode
Attenuation to an input signal (dB)
MUTE SW
BUF1
BUF2
BUF3
Total gain
(dB)
MUTE1
MUTE1A
MUTE2
MUTE3
Ach
Bch
Ach
Bch
Ach
Bch
Ach
Bch
Input signal is applied to BUF 1 and BUF 2.
OFF
ON
6
0
OFF
9.5
3.5
OFF
ON
OFF
ON
OFF
ON
OFF
6
9.5
6
3.5
0
Input signal is applied to BUF 1 and BUF 3.
OFF
ON
OFF
6
6
0
OFF
9.5
9.5
3.5
OFF
ON
OFF
6
6
0
OFF
ON
OFF
9.5
9.5
3.5
Input signal is applied to BUF 2 and BUF 3.
ON
ON/OFF
OFF
6
0
OFF
ON
OFF
6
9.5
6
9.5
0
3.5
OFF
9.5
3.5
(3)
3-input mode
Attenuation to an input signal (dB)
MUTE SW
BUF1
BUF2
BUF3
Total gain
(dB)
MUTE1
MUTE1A
MUTE2
MUTE3
Ach
Bch
Ach
Bch
Ach
Bch
Ach
Bch
OFF
9.5
0
OFF
ON
OFF
9.5
3.5
0
2.
Low-cut compensation
The low-frequency range can be decreased using an output-coupling capacitor and a load (fc = 50 Hz at C
= 100 F, R = 32 ). However, since the capacitor is connected between the IC’s output pin (pin 2/4) and EQ
pin (pin 1/5), the low-frequency gain of the power amplifier increases, enabling low-cut compensation to be
performed. For the response of capacitors of different values, refer to Figure 1.
Figure 1. Capacitor Response
Frequency
f
(Hz)
RES – f
R
e
s
pon
s
e
(dB)
Coupling C
= 100 F
RL = 32
0.15
F
4.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
2.0
10
50
100
500 1000
5000
0.1
F
0.22
F
No compensation
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