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参数资料
| 型号： | TS4984EIJT |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| 封装： | LEAD FREE, FCP-15 |
| 文件页数： | 11/30页 |
| 文件大小： | 1644K |
| 代理商： | TS4984EIJT |
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TS4984FC
Application Information
19/30
The output power is:
For the same power supply voltage, the output power in a BTL configuration is four times higher
than the output power in a single-ended configuration.
4.2
Gain in typical application schematic
The typical application schematic (
Figure 62) is shown on page 18.
In the flat region (no Cin effect), the output voltage of the first stage is:
For the second stage:
Vout2 =-Vout1 (V)
The differential output voltage is:
The differential gain, referred to as Gv for greater convenience, is:
Vout2 is in phase with Vin and Vout1 is phased 180° with Vin. This means that the positive
terminal of the loudspeaker should be connected to Vout2 and the negative to Vout1.
4.3
Low and high frequency response
In the low frequency region, Cin starts to have an effect. Cin forms with Rin a high-pass filter with
a -3dB cut-off frequency:
In the high frequency region, you can limit the bandwidth by adding a capacitor (Cfeed) in
parallel with Rfeed. It forms a low-pass filter with a -3dB cut-off frequency. FCH is in Hz.
P
out
2V
outR MS
()
2
R
L
----------------------------------
=
V
ou t1
V
–
in
()
R
fe ed
R
in
--------------
(V)
=
V
out 2
V
ou t1
–
2V
in
R
fee d
R
in
--------------
(V)
=
G
v
V
out2
V
out1
–
V
in
----------------------------------
2
R
f eed
R
in
--------------
==
F
CL
1
2
πR
in Cin
------------------------
(Hz)
=
F
CH
1
2
πR
f eedCf eed
-------------------------------------
(Hz)
=
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PDF描述 |
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| TS4984EIKJT | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
| TS4984EKIJT | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA15 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TS4984EIKJT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2W Stereo Audio Power Amplifier with Active Low Standby Mode |
| TS4984FC | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2W Stereo Audio Power Amplifier with Active Low Standby Mode |
| TS4984IQT | 功能描述:音频放大器 2x1W stereo audio Pwr 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 |
| TS4985 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:2x1.2w Stereo Audio Power Amplifier with Dedicated Standby Pins |
| TS4985EIJT | 功能描述:音频放大器 2x1.2W stereo audio 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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