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參數資料
| 型號： | TS2007EIJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| 封裝： | ROHS COMPLIANT, BGA-9 |
| 文件頁數： | 14/28頁 |
| 文件大小： | 451K |
| 代理商： | TS2007EIJT |
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TS2007FC
Application information
21/28
So, for a desired cut-off frequency FCL we can calculate Cin:
with FCL in Hz, Zin in Ω and Cin in F.
The input impedance Zin is for the whole power supply voltage range, typically 75 kΩ. There
tolerance, you can also calculate tolerance of the FCL:
●
4.5
Circuit decoupling
A power supply capacitor, referred to as CS, is needed to correctly bypass the TS2007.
The TS2007 has a typical switching frequency of 280 kHz and output fall and rise time of
less than or equal to 5 ns. Due to these very fast transients, careful decoupling is
mandatory.
A 1 F ceramic capacitor is enough, but it must be located very close to the TS2007 in order
to avoid any extra parasitic inductance created by a long track wire. Parasitic loop
inductance, in relation with di/dt, introduces overvoltage that decreases the global efficiency
of the device and may cause, if this parasitic inductance is too high, a TS2007 breakdown.
For filtering low frequency noise signals on the power line, it is recommended to use a
capacitor CS of at least 1 F.
In addition, even if a ceramic capacitor has an adequate high frequency ESR (equivalent
series resistance) value, its current capability is also important. A 0603 size is a good
compromise, particularly when a 4
Ω load is used.
Another important parameter is the rated voltage of the capacitor. A 1 F/6.3 V capacitor
used at 5 V, loses about 50% of its value: with a power supply voltage of 5 V, the decoupling
value, instead of 1 F, could be reduced to 0.5 F. As CS has particular influence on the
THD+N in the medium to high frequency region, this capacitor variation becomes decisive.
In addition, less decoupling means higher overshoots which can be problematic if they reach
the power supply AMR value (6 V).
4.6
Wake-up time (twu)
When the standby is released to set the device ON, there is a wait of 1 ms typically. The
TS2007 has an internal digital delay that mutes the outputs and releases them after this
time in order to avoid any pop noise.
Note:
selected by the GS pin (Section 4.2).
F
CL
1
2
π Z
in
C
in
--------------------------------------------
=
C
in
1
2
π Z
in
F
CL
----------------------------------------------
=
F
CLmax
1.103
F
CL
=
F
CLmin
0.915
F
CL
=
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TS2007EKIJT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 W filter-free class D audio power amplifier with 6 or 12 dB fixed gain select |
| TS2007FC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3 W filter-free class D audio power amplifier with 6 or 12 dB fixed gain select |
| TS2007IQT | 功能描述:音頻放大器 3W filter free ClassD audio Pwr amp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS200A | 制造商:Black Box Corporation 功能描述:VERI NET VOIP |
| TS200A-W1 | 制造商:Black Box Corporation 功能描述:1 YEAR WARRANTY FOR TS200A |
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