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參數(shù)資料
| 型號： | TSH350IDT |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 550 MHz, Low Noise Current Feedback Amplifier |
| 中文描述： | 550兆赫，低噪聲電流反饋放大器 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 383K |
| 代理商： | TSH350IDT |
TSH350
Noise Measurements
14/21
The input noise of the instrumentation must be extracted from the measured noise value. The real output
noise value of the driver is:
Equation 3
The input noise is called the Equivalent Input Noise as it is not directly measured but is evaluated from the
measurement of the output divided by the closed loop gain (eNo/g).
After simplification of the fourth and the fifth term of
Equation 2
we obtain:
Equation 4
Measurement of the Input Voltage Noise
eN
If we assume a short-circuit on the non-inverting input (R3=0), from
Equation 4
we can derive:
Equation 5
In order to easily extract the value of eN, the resistance R2 will be chosen to be as low as possible. In the
other hand, the gain must be large enough:
R3=0, gain: g=100
Measurement of the Negative Input Current Noise
iNn
To measure the negative input current noise iNn, we set R3=0 and use
Equation 5
. This time the gain
must be lower in order to decrease the thermal noise contribution:
R3=0, gain: g=10
Measurement of the Positive Input Current Noise
iNp
To extract iNp from
Equation 3
, a resistance R3 is connected to the non-inverting input. The value of R3
must be chosen in order to keep its thermal noise contribution as low as possible against the iNp
contribution:
R3=100W, gain: g=10
eNo
Measured
(
)
2
instrumentation
(
)
2
–
=
eNo2
eN2
g2
iNn2
R22
iNp2
+
×
+
×
R32
×
g2
×
g
4kTR2
1
R1
-------
+
2
4kTR3
×
+
×
+
=
eNo
eN2
g2
iNn2
R22
g
4kTR2
×
+
×
+
×
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSH350ILT | 550 MHz, Low Noise Current Feedback Amplifier |
| TSH511 | HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator |
| TSH511C | HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator |
| TSH511CF | HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator |
| TSH511CFT | HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSH350ILT | 功能描述:運算放大器 - 運放 Single Low Noise RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TS-H352D/U0AH | 制造商:Samsung 功能描述:DVDRW FOR ALCON - Bulk |
| TSH511 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator |
| TSH511_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Hi-fi stereo/mono infrared receiver and stereo sub-carrier demodulator |
| TSH511C | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HiFi stereo/mono infrared receiver Stereo sub-carrier demodulator |
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