參數(shù)資料
型號： THS4081D
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
文件大小： 384K
代理商： THS4081D
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PDF資料
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THS4081DGN 175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS
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相關代理商/技術參數(shù)
參數(shù)描述
THS4081DGN 制造商:TI 制造商全稱:Texas Instruments 功能描述:175-MHz LOW-POWER HIGH-SPEED AMPLIFIERS
THS4081ED 制造商:Rochester Electronics LLC 功能描述:- Bulk
THS4081EVM 功能描述:放大器 IC 開發(fā)工具 THS4081 Eval Mod 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
THS4081ID 功能描述:高速運算放大器 175MHz Low Power 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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
THS4081ID 制造商:Texas Instruments 功能描述:OP AMP HIGH SPEED VFB SMD 4081
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