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参数资料
| 型号： | TS4994EIJT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| 封装： | ROHS COMPLIANT, FCP-9 |
| 文件页数： | 25/35页 |
| 文件大小： | 694K |
| 代理商： | TS4994EIJT |
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TS4994FC
Application information
31/35
4.10
Shutdown time
When the standby command is set, the time required to put the two output stages in high
impedance and the internal circuitry in shutdown mode is a few microseconds.
Note:
In shutdown mode, the Bypass pin and Vin+, Vin- pins are short-circuited to ground by
internal switches. This allows a quick discharge of the Cb and Cin capacitors.
4.11
Pop performance
Due to its fully differential structure, the pop performance of the TS4994 is close to perfect.
However, due to mismatching between internal resistors Rin, Rfeed, and external input
capacitors Cin, some noise might remain at startup. To eliminate the effect of mismatched
components, the TS4994 includes pop reduction circuitry. With this circuitry, the TS4994 is
close to zero pop for all possible common applications.
In addition, when the TS4994 is in standby mode, due to the high impedance output stage in
this configuration, no pop is heard.
4.12
Single-ended input configuration
It is possible to use the TS4994 in a single-ended input configuration. However, input
coupling capacitors are needed in this configuration. The schematic in Figure 98 shows an
example of this configuration.
Figure 98.
Single-ended input typical application
The component calculations remain the same, except for the gain. In single-ended input
configuration, the formula is:
Rfeed1
20k
Rin1
20k
Rin2
20k
Rfeed2
20k
+
Cin1
220nF
+
Cin2
220nF
+
Cb
1u
+
Cs
1u
GND
Ve
GND
VCC
Bias
Vin-
Vin+
Bypass
Standby
VCC
GND
Vo-
Vo+
+
-
3
8
2
5
6
9
1
7
4
Mode
Stdby
TS4994IJ
8 Ohms
in
feed
O
SE
R
Ve
V
Av
=
=
+
相关PDF资料 |
PDF描述 |
|---|---|
| TS4994EIKJT | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4994IQT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8 |
| TS4994IST | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS4995EIJT | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4998IQT | 1 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS4994EIKJT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2 W differential input/output audio power amplifier with selectable standby |
| TS4994FC | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2 W differential input/output audio power amplifier with selectable standby |
| TS4994IJT | 功能描述:音频放大器 STANDARD LINEAR RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TS4994IQT | 功能描述:音频放大器 1W diff input/output audio Pwr amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TS4994IST | 功能描述:音频放大器 1W Audio Power Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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