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參數(shù)資料
| 型號： | THS4082D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
| 中文描述： | 175 - MHz的低功耗高速放大器 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 384K |
| 代理商： | THS4082D |
THS4081, THS4082
175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS
SLOS274C – DECEMBER 1999 – REVISED MAY 2000
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
noise calculations and noise figure (continued)
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.
NF
10log
e
2
ni
eRs
2
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
Figure 40 shows the noise figure graph for the THS408x.
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
Source Resistance – RS (
)
f = 10 kHz
TA = 25
°
C
NOISE FIGURE
vs
SOURCE RESISTANCE
10
100
1k
10k
N
100k
Figure 40. Noise Figure vs Source Resistance
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| THS4082DGN | 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
| THS4082EVM | 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
| THS4081D | 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
| THS4081DGN | 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
| THS4081EVM | 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS4082DGN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS |
| THS4082EVM | 功能描述:放大器 IC 開發(fā)工具 THS4082 175MHz Lo-Po Hi-Spd Amp Eval Bd RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| THS4082ID | 功能描述:高速運算放大器 Dual 175MHz RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4082IDG4 | 功能描述:高速運算放大器 175-MHz Low-Power Vltg-Feedback Dual RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS4082IDGN | 功能描述:高速運算放大器 175-MHz Low-Power Vltg-Feedback Dual RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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