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參數(shù)資料
| 型號： | TS4956EIKJT |
| 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)： | 38/52頁 |
| 文件大?。?/td> | 1709K |
| 代理商： | TS4956EIKJT |
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TS4956
Application information
43/51
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 F, you can expect to obtain THD+N performances similar to
those shown in the datasheet.
If Cs is lower than 1 F, THD+N increases in high frequency and disturbances on power
supply rail are less filtered.
On the contrary, if Cs is higher than 1 F, 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 F, THD+N increases at lower frequencies and the PSRR
worsens upwards.
●
If Cb is higher than 1 F, 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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PDF描述 |
|---|---|
| TS4956EKIJT | 1.06 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| TS4961TIQT | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| TS4962EIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4962EIKJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4962EKIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| TS4962EIJT | 制造商:STMicroelectronics 功能描述:AUD AMP SPKR 1CH MONO 2W CLS-D 9PIN FLIP-CHIP - Tape and Reel |
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