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參數(shù)資料
| 型號： | THS6007 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Dual Differential Line Drivers and Low-Power Receivers |
| 中文描述： | 雙路差動線路驅(qū)動器和低功耗接收器 |
| 文件頁數(shù)： | 26/36頁 |
| 文件大?。?/td> | 679K |
| 代理商： | THS6007 |
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THS6007
DUAL DIFFERENTIAL LINE DRIVERS AND LOW-POWER RECEIVERS
SLOS334– DECEMBER 2000
26
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 receiver amplifiers which are
generally used for amplifying small signals coming over a transmission line. 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 82.
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 82. 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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| THS6007IPWP | DUAL DIFFERENTIAL LINE DRIVERS AND LOW-POWER RECEIVERS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS6007CPWP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL DIFFERENTIAL LINE DRIVERS AND LOW-POWER RECEIVERS |
| THS6007IPWP | 功能描述:電信線路管理 IC Dual Diff Line Drvr & Lo-Pwr Receivers RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| THS6012 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL DIFFERENTIAL LINE DRIVERS AND RECEIVERS |
| THS60121 | 制造商:Texas Instruments 功能描述:THS60121 |
| THS6012CDWP | 功能描述:緩沖器和線路驅(qū)動器 500-mA Dual Diff Line Driver 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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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