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参数资料
| 型号： | TS4604IPT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.065 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO28 |
| 封装： | 0.65 MM PITCH, ROHS COMPLIANT, TSSOP-28 |
| 文件页数： | 11/31页 |
| 文件大小： | 644K |
| 代理商： | TS4604IPT |
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TS4604
Application information
Doc ID 17913 Rev 1
19/31
These capacitors must be placed as close as possible to the TS4604 to minimize parasitic
inductance and resistance that have a negative impact on the audio performance.
6.5
Input coupling capacitor (Cin)
An input coupling capacitor (Cin) might be used for TS4604 operation to block any DC
component of the audio signal.
Cin starts to have an effect in the low frequency region. Cin forms with Rin a high-pass filter
with a -3 dB cut-off frequency.
Example
A differential input gain as shown in Figure 46 on page 20 with the gain equalling 0 dB
(Rin = 10 k
Ω, Rfd = 10 kΩ) and an input capacitor of 2.2 F gives:
The high-pass filter has a -3 dB cut-off frequency at 7.2 Hz in this case.
6.6
Range of the gain setting resistors
The gain is given by the external resistors Rfd divided by Rin. The feedback resistor Rfd
does not exceed 100 k
Ω for closed-loop stability reasons.
Table 7 gives the recommended resistor values and the gain for different types of
application.
Fc
3dB
–
()
1
2.
π Rin Cin
------------------------------------------ Hz
()
=
Fc
1
2.
π 10000 2.2e10
6
–
----------------------------------------------------------------
7.2Hz
==
Table 7.
Recommended resistors values
Rin
Rfd
Differential gain
Inverting gain
Non-inverting gain
10 k
Ω
10 k
Ω
0 dB
6 dB
10 k
Ω
20 k
Ω
6 dB
10 dB
10 k
Ω
50 k
Ω
14 dB
16 dB
4.7 k
Ω
47 k
Ω
20 dB
21 dB
10 k
Ω
100 k
Ω
20 dB
21 dB
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相关代理商/技术参数 |
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| TS461 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:OUTPUT RAIL TO RAIL OPERATIONAL AMPLIFIERS |
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| TS461CD | 功能描述:运算放大器 - 运放 Single Rail-to-Rail RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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