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參數(shù)資料
| 型號： | THS6002DWP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL DIFFERENTIAL LINE DRIVERS AND RECEIVERS |
| 中文描述： | 雙差分線路驅(qū)動與接收 |
| 文件頁數(shù)： | 29/40頁 |
| 文件大?。?/td> | 718K |
| 代理商： | THS6002DWP |
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THS6002
DUAL DIFFERENTIAL LINE DRIVERS AND RECEIVERS
SLOS202D– JANUARY 1998– REVISED JULY 1999
29
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
noise calculations and noise figure (continued)
As the previous equations show, to keep noise at a minimum, small value resistors should be used. As the
closed-loop gain is increased (by reducing R
G
), the input noise is reduced considerably because of the parallel
resistance term. This leads to the general conclusion that the most dominant noise sources are the source
resistor (R
S
) and the internal amplifier noise voltage (e
n
). Because noise is summed in a root-mean-squares
method, noise sources smaller than 25% of the largest noise source can be effectively ignored. This can greatly
simplify the formula and make noise calculations much easier to calculate.
This brings up another noise measurement usually preferred in RF applications, the noise figure (NF). Noise
figure is a measure of noise degradation caused by the amplifier. The value of the source resistance must be
defined and is typically 50
in RF applications.
2
ni
eRs
NF
10log
e
Because the dominant noise components are generally the source resistance and the internal amplifier noise
voltage, we can approximate noise figure as:
NF
10log
1
en
2
IN
RS
2
4 kTRS
The Figure 55 shows the noise figure graph for the THS6002.
NOISE FIGURE
vs
SOURCE RESISTANCE
18
14
0
20
16
12
N
Rs – Source Resistance –
10
100
1k
10k
TA = 25
°
C
8
4
10
6
2
Figure 55. Noise Figure vs. Source Resistance
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| THS6182DR | LOW-POWER DISSIPATION ADSL LINE DRIVER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS6002EVM | 功能描述:其他開發(fā)工具 THS6002 Hi-Spd Amp Eval Mods RoHS:否 制造商:Parallax 產(chǎn)品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評估:ELEV-8 Quadcopter 工作電源電壓: |
| THS6002IDWP | 功能描述:緩沖器和線路驅(qū)動器 Dual Diff/Receiver 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 |
| THS6002IDWP | 制造商:Texas Instruments 功能描述:TRANSCEIVER DUAL SMD 6002 SOIC20 |
| THS6002IDWPG4 | 功能描述:緩沖器和線路驅(qū)動器 Dual Diff/Receiver 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 |
| THS6002IDWPR | 功能描述:緩沖器和線路驅(qū)動器 Dual Diff/Receiver 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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