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参数资料
| 型号： | TA0102A |
| 厂商： | Electronic Theatre Controls, Inc. |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEREO 150W (4з) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPPTM) TECHNOLOGY |
| 中文描述： | 立体声150瓦（4з）类- T的数字音频放大器驱动程序使用数字功率处理（DPPTM）科技 |
| 文件页数： | 9/12页 |
| 文件大小： | 235K |
| 代理商： | TA0102A |
Tripath Technology, Inc. - Technical Information
9 TA0102A, Rev. 3.1/06.01
Functional Description
TA0102A Amplifier Operation
Figure 3 is a simplified diagram of one channel (channel 1) of a TA0102A amplifier to assist in
understanding its operation.
Figure 3. Simplified TA0102A Amplifier
The audio input signal (IN1) is fed into the processor internal to the TA0102A, where a modulation
pattern is generated. This pattern is spread spectrum and varies between approximately 200kHz and
1.5MHz. Complementary copies of the switching pattern are level-shifted by the MOSFET drivers
and output from the TA0102A where they drive the gates (HO1 and LO1) of external power
MOSFETs that are connected as a half bridge. The output of the half bridge is a power-amplified
version of the switching pattern that switches between V
SPOS
and V
SNEG
. This signal is then low-pass
filtered to obtain amplified audio.
Processing
&
Modulation
TA0102A
MUTE
OVERLOADB
IN1
P Gnd
A Gnd
OCS1H-
HO1
HO1COM
VN12
OCS1L+
OCR1
FDBKN1
R
S
V
SPOS
M
R
OCR1
BBM0
BBM1
R
L
6
4
11
7
8
1
28
18
OCS1H+
15
16
22
OCS1L-
14
17
20
21
19
9
GNDKELVIN1
HMUTE
V
SNEG
V
SPOS
23
24
2
R
G
M
R
G
R
S
V
SNEG
LO1
35
Low-pass
Filter
Over-current
Detection
Over-current
Detection
13
LO1COM
Over/Under
Voltage
V
BOOT
V5
3
R
IN
C
IN
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