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参数资料
| 型号： | TSH300ILT |
| 厂商： | 意法半导体 |
| 元件分类： | 运动控制电子 |
| 英文描述： | Ultra Low-Noise High-Speed Operational Amplifier |
| 中文描述： | 超低噪音高速运算放大器 |
| 文件页数： | 15/18页 |
| 文件大小： | 398K |
| 代理商： | TSH300ILT |
Noise Measurements
TSH300
15/18
The input noise of the instrumentation must be extracted from the measured noise value. The
real output noise value of the driver is:
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:
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:
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=100
,
gain: g=10
eNo
Measured
(
)
2
instrumentation
(
)
2
–
(Equation 3)
=
eNo2
eN2
g2
iNn2
R22
iNp2
+
×
+
×
R32
×
g2
×
g
4kTR2
g2
4kTR3
×
+
×
(Equation 4)
+
=
eNo
eN2
g2
iNn2
R22
g
4kTR2
×
+
×
+
×
(Equation 5)
=
相关PDF资料 |
PDF描述 |
|---|---|
| TSH310 | Fasteners, Spacers/standoffs; Spacing Height:1.5"; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No |
| TSH310ID | 400A High-Speed Operational Amplifier |
| TSH310IDT | 400A High-Speed Operational Amplifier |
| TSH310ILT | 400A High-Speed Operational Amplifier |
| TSH330 | 1.1 GHz Low-Noise Operational Amplifier |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TSH31 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:280MHz BANDWIDTH MOS INPUT SINGLE OPERATIONAL AMPLIFIER |
| TSH310 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-speed operational amplifier evaluation board kit |
| TSH310ID | 功能描述:运算放大器 - 运放 Hi Spd Op Amp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TSH310IDT | 功能描述:运算放大器 - 运放 Single Lo Pwr Hi-Spd RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TSH310ILT | 功能描述:运算放大器 - 运放 Single Lo Pwr Hi-Spd RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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