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参数资料
| 型号： | TSH72CD |
| 厂商： | 意法半导体 |
| 元件分类： | 运动控制电子 |
| 英文描述： | WIDE BAND, LOW POWER OPERATIONAL AMPLIFIER WITH STANDBY FUNCTION |
| 中文描述： | 宽频带低功率运算放大器的待机，功能 |
| 文件页数： | 21/25页 |
| 文件大小： | 1096K |
| 代理商： | TSH72CD |
TSH70, 71, 72, 73, 74, 75
21/25
Example of a video application :
This example shows a possible application of the TSH7X circuit. Here, you can multiplex the channels for
the different standard PAL, NTSC as you filter for the different bands; the video signal can be filtered with
two different cutoff frequencies, corresponding to a PAL encoded signal (LPF1) or a NTSC signal (LPF2).
You can multiplex input signals, as the outputs are in high impedance state in standby mode.This enables
you, to use a PAL filter as the Standby mode is active and to use the NTSC filter otherwise.
The video application requires 1Vpeak at input and output.
Calculation of components:
A decoupling capacitor is provided to cutoff the frequencies below 10Hz according I bias.Hence Ce=10uF,
with Rb1=10K
. At the output, Cout=220uF.
The AOP1 is in 6dB configuration for the adaptation bridge. R1=R2=1K
.
V1=2Vpk. V2=1Vpk
For the PAL communication, we need a lowpass filtering. The load resistance R4 is function of the output
resistance of the filter.V3=V2/A1 where A1 is the attenuation factor of the filter LPF1.
To compensate the filter insertion loss, we add an additional factor to the gain of the 2nd amplifier AOP2.
For example, for an attenuation of 3dB, we choose R5=300
and R6=1K
. We have V4=2Vpk and
Vout=1Vpk.
The calculation of the parameters R7, C7, R8, C8, R9, R10 will be exactly the same .
Parameter
Phase Margin
f-3dB
Phase Margin
f-3dB
Phase Margin
f-3dB
Phase Margin
f-3dB
Cf (pF)
Vcc=!1.5V
28
40
30
40
37
37
48
33.7
Vcc=!2.5V
43
39.3
43
39.3
52
34
65
30.7
Vcc=!5V
56
38.3
56
38.3
67
32
78
27.6
Unit
deg
MHz
deg
MHz
deg
MHz
deg
MHz
0
5.6
22
33
IN
Ce
Re
Rb1
Vcc/2
C4
+
-
Vcc/2
+
-
+
-
Standby
Standby
R1
R2
R3
C3
R4
Rb1
R5
R6
R9
R10
Rout
OUT
AOP1
AOP2
AOP3
V1
V2
V3
V4
A1
Vcc/2
Vcc/2
Cf
Cf
Cf
Cout
Vcc/2
RL
R7
C7
R8
C8
LPF2
A2
PAL
NTSC
LPF1
Rb1
Vcc/2
相关PDF资料 |
PDF描述 |
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| TSH72CDT | WIDE BAND, LOW POWER OPERATIONAL AMPLIFIER WITH STANDBY FUNCTION |
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| TSH73 | WIDE BAND, LOW POWER OPERATIONAL AMPLIFIER WITH STANDBY FUNCTION |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TSH72CDT | 功能描述:运算放大器 - 运放 Dual Wideband Lo-Pwr 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 |
| TSH72CPT | 功能描述:运算放大器 - 运放 Dual Wideband Lo-Pwr 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 |
| TSH73 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:High-speed operational amplifier evaluation board kit |
| TSH73CD | 功能描述:运算放大器 - 运放 Lo Pwr Oper Amp Wide Band 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 |
| TSH73CDT | 功能描述:运算放大器 - 运放 Lo Pwr Oper Amp Wide Band 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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