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参数资料
| 型号： | TS4871EIDT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封装： | SOP-8 |
| 文件页数： | 16/29页 |
| 文件大小： | 1556K |
| 代理商： | TS4871EIDT |
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TS4871
23/28
which gives 16Hz.
In Higher frequency we want 20kHz (-3dB cut off
frequency). The Gain Bandwidth Product of the
TS4871 is 2MHz typical and doesn’t change when
the amplifier delivers power into the load.
The first amplifier has a gain of:
and the theoretical value of the -3dB cut-off higher
frequency is 2MHz/3 = 660kHz.
We can keep this value or limit the bandwidth by
adding a capacitor Cfeed, in parallel on Rfeed.
Then:
So, we could use for Cfeed a 220pF capacitor
value that gives 24kHz.
Now, we can calculate the value of Cb with the
formula
τb = 50kxCb >> τin = (Rin+Rfeed)xCin
which permits to reduce the pop and click effects.
Then Cb >> 0.8F.
We can choose for Cb a normalized value of 2.2F
that gives good results in THD+N and PSRR.
In the following tables, you could find three
another examples with values required for the
demoboard.
Remark : components with (*) marking are
optional.
Application n°1 : 20Hz to 20kHz bandwidth and
6dB gain BTL power amplifier.
Components :
Application n°2 : 20Hz to 20kHz bandwidth and
20dB gain BTL power amplifier.
Components :
CIN =
1
2
π RinFCL
------------------------------ = 795nF
Rfee d
Rin
----------------- = 3
C FEED =
1
2
π RFEEDFCH
--------------------------------------- = 265pF
Designator
Part Type
R1
22k / 0.125W
R4
22k / 0.125W
R6
Short Cicuit
R7
330k / 0.125W
R8*
(Vcc-Vf_led)/If_led
C5
470nF
C6
100F
C7
100nF
C9
Short Circuit
C10
Short Circuit
C12
1F
S1, S2, S6, S7
2mm insulated Plug
10.16mm pitch
S8
3 pts connector 2.54mm
pitch
P1
PCB Phono Jack
D1*
Led 3mm
U1
TS4871ID or TS4871IS
Designator
Part Type
R1
110k / 0.125W
R4
22k / 0.125W
R6
Short Cicuit
R7
330k / 0.125W
R8*
(Vcc-Vf_led)/If_led
C5
470nF
C6
100F
C7
100nF
相关PDF资料 |
PDF描述 |
|---|---|
| TS4871IDT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS4871ID | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS4871IST | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS4871IQT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8 |
| TS4871IS | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS4871ID | 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 |
| TS4871ID | 制造商:STMicroelectronics 功能描述:Operational Amplifier (Op-Amp) IC |
| TS4871IDT | 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 |
| TS4871IQT | 功能描述:音频放大器 1W Mono Audio Power 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 |
| TS487-1IQT | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Amplifier. Other |
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