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參數(shù)資料
| 型號(hào)： | TS488IQT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.13 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | 2 X 2 MM, DFN-8 |
| 文件頁數(shù)： | 17/32頁 |
| 文件大?。?/td> | 570K |
| 代理商： | TS488IQT |
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Application information
TS488-TS489
24/32
Note:
In case FCL is kept the same for calculation, It must be taken in account that the
1st order high-pass filter on the input and the 1st order high-pass filter on the
output create a 2nd order high-pass filter in the audio signal path with an
attenuation 6dB on FCL and a roll-off 40db decade.
4.4
Higher 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. Assuming
that FCH is highest frequency to be amplified (with a 3dB attenuation), the maximum value of
Cfeed is:
Figure 79.
Lower cut-off frequency vs.
input capacitor
Figure 80.
Lower cut-off frequency vs.
output capacitor
1
10
100
1000
10
100
1k
10k
Rin=50k
Ω
Rin=100k
Ω
Rin=20k
Ω
Lo
w
er
C
u
t-
o
ff
fr
eq
uency
(Hz
)
Cin (nF)
Rin=10k
Ω
0.1
1
10
100
1000
10
100
1k
10k
R
L
=32
Ω
R
L
=600
Ω
R
L
=16
Ω
Lo
we
rCut-off
frequency
(H
z
)
Cout (
μF)
Figure 81.
Higher cut-off frequency vs. feedback capacitor
F
CH
1
2
π R
feed
C
feed
--------------------------------------------------
=
0.01
0.1
1
10
100
1k
10k
100k
Rfeed=40k
Ω
Rfeed=80k
Ω
Rfeed=20k
Ω
H
igh
e
rC
u
t-off
F
requen
c
y
(kH
z
)
Cfeed
(
μF)
Rfeed=10k
Ω
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TS488IST | 0.13 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS489IQT | 0.13 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS489IST | 0.13 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS4890IDT | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TS4890ID | 1 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS488IST | 功能描述:音頻放大器 Popfree 100mW stereo headphone 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 |
| TS489 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Pop-free 120mW stereo headphone amplifier |
| TS4890 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:RAIL TO RAIL OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW |
| TS4890ID | 功能描述:音頻放大器 1W Audio Power 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 |
| TS4890IDT | 功能描述:音頻放大器 1W Audio Power 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 |
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