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參數(shù)資料
| 型號(hào)： | THS6032DWP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER |
| 中文描述： | 低功耗寬帶局端線路驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 24/31頁 |
| 文件大?。?/td> | 496K |
| 代理商： | THS6032DWP |
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THS6032
LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER
SLOS233C – APRIL1999 – REVISED MARCH 2000
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
noise calculations and noise figure
Noise can cause errors on very small signals. This is especially true for the amplifying small signals. The noise
model for current feedback amplifiers (CFB) is the same as voltage feedback amplifiers (VFB). The only
difference between the two is that the CFB amplifiers generally specify different current noise parameters for
each input, while VFB amplifiers usually only specify one noise current parameter. The noise model is shown
in Figure 49. This model includes all of the noise sources as follows:
e
n
= Amplifier internal voltage noise (nV/
√
Hz)
IN+ = Noninverting current noise (pA/
√
Hz)
IN– = Inverting current noise (pA/
√
Hz)
e
Rx
= Thermal voltage noise associated with each resistor (e
Rx
= 4 kTR
x
)
_
+
RF
RS
RG
eRg
eRf
eRs
en
IN+
Noiseless
IN–
eni
eno
Figure 49. Noise Model
The total equivalent input noise density (e
ni
) is calculated by using the following equation:
eni
en
2
IN
RS
2
IN–
RF
RG
2
4 kTRs
4 kT RF
RG
Where:
k = Boltzmann’s constant = 1.380658
×
10
–23
T = Temperature in degrees Kelvin (273 +
°
C)
R
F
|| R
G
= Parallel resistance of R
F
and R
G
To get the equivalent output noise of the amplifier, just multiply the equivalent input noise density (e
ni
) by the
overall amplifier gain (A
V
).
eno
eniAV
e
ni
1
R
F
R
G
(Noninverting Case)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS6032EVM | 功能描述:放大器 IC 開發(fā)工具 THS6032 Hi-Spd Amp Eval Mods RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| THS6032GQE | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER |
| THS6032GQEEVM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER |
| THS6032IDWP | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low-Pwr ADSL Cent-Office Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| THS6032IDWPG4 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low-Pwr ADSL Cent-Office Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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