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參數(shù)資料
| 型號(hào)： | TS4956EIJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| 封裝： | ROHS COMPLIANT, FCP-18 |
| 文件頁數(shù)： | 41/55頁 |
| 文件大?。?/td> | 1711K |
| 代理商： | TS4956EIJT |
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TS4956
Application information
46/55
4.6
Decoupling of the circuit
Two capacitors are needed to properly bypass the TS4956 — a power supply capacitor Cs
and a bias voltage bypass capacitor Cb.
Cs has a strong influence on the THD+N at high frequencies (above 7 kHz) and indirectly on
the power supply disturbances.
With a Cs value of about 1 μF, you can expect to obtain THD+N performances similar to
those shown in the datasheet.
If Cs is lower than 1 μF, THD+N increases in high frequency and disturbances on power
supply rail are less filtered.
On the contrary, if Cs is higher than 1 μF, disturbances on the power supply rail are more
filtered.
Cb has an influence on THD+N at lower frequencies, but its value has critical impact on the
final result of PSRR with inputs grounded at lower frequencies:
●
If Cb is lower than 1 μF, THD+N increases at lower frequencies and the PSRR
worsens upwards.
●
If Cb is higher than 1 μF, the benefit on THD+N and PSRR in the lower
frequency range is small.
The value of Cb also has an influence on startup time.
4.7
Power-on reset
When power is applied to VCC, an internal power-on reset holds the TS4956 in a reset state
(shutdown) until the supply voltage reaches its nominal value. The power-on reset has a
typical threshold of 1.75 V.
During this reset state the output configuration is the same as in the shutdown mode.
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| TS4956EIKJT | 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
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| TS4961TIQT | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| TS4962EIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS4956EIKJT | 功能描述:音頻放大器 Stereo Audio Amp System RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4961TIQT | 功能描述:音頻放大器 MONO CLASS D AUDIO PWR AMP RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4962 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8 W filter-free mono class D audio power amplifier |
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