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参数资料
| 型号： | TS472IQT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, AUDIO PREAMPLIFIER, QCC24 |
| 封装： | 4 X 4 MM, LEAD FREE, QFN-24 |
| 文件页数： | 10/24页 |
| 文件大小： | 622K |
| 代理商： | TS472IQT |
Application information
TS472
18/24
5.7
Standby mode
When the standby command is set, the time required to set the output stages (differential
outputs and 2.0V bias output) in high impedance and the internal circuitry in shutdown mode
is a few microseconds.
5.8
Layout considerations
The TS472 has sensitive pins to connect C1, C2 and Rgs. To obtain high power supply
rejection and low noise performance, it is mandatory that the layout track to these
component is as short as possible.
Decoupling capacitors on VCC and bypass pin are needed to eliminate power supply drops.
In addition, the capacitor location for the dedicated pin should be as close to the device as
possible.
5.9
Single-ended input configuration
It’s possible to use the TS472 in a single-ended input configuration. The schematic in
Figure 39 provides an example of this configuration.
Figure 39.
Single ended input typical application
VCC
Electret Mic
Rpos
Standby Control
Positive Output
Negative Output
1uF
Cb
1uF
Cs
1uF
C3
C1
C2
Cin+
Cin-
+
Cout+
Cout-
Rout+
Rout-
Bias
STDB
Y
IN-
IN+
G
C1
C2
OUT+
OUT-
GAIN
BYPASS
BIAS
GND
Vcc
SELECT
D3
A3
B3
C2
D2
B2
D1
C3
C1
A2
B1
A1
2.0V
U1
TS472
Optional
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