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参数资料
| 型号： | LT1794CFE |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 运动控制电子 |
| 英文描述： | Dual 500mA, 200MHz xDSL Line Driver Amplifier |
| 中文描述： | DUAL OP-AMP, 7500 uV OFFSET-MAX, 200 MHz BAND WIDTH, PDSO20 |
| 封装： | 4.40 MM, EXPOSED PAD, PLASTIC, TSSOP-20 |
| 文件页数： | 16/20页 |
| 文件大小： | 275K |
| 代理商： | LT1794CFE |
16
LT1794
APPLICATIOU
Using DC blocking capacitors, as shown in Figure 16, to
AC couple the signal to the transformer eliminates the
possibility for DC current to flow under any conditions.
These capacitors should be sized large enough to not
impair the frequency response characteristics required for
the data transmission.
Another important fault related concern has to do with
very fast high voltage transients appearing on the tele-
phone line (lightning strikes for example). TransZorbs
,
varistors and other transient protection devices are often
used to absorb the transient energy, but in doing so also
W
U
U
create fast voltage transitions themselves that can be
coupled through the transformer to the outputs of the line
driver. Several hundred volt transient signals can appear
at the primary windings of the transformer with current
into the driver outputs limited only by the back termination
resistors. While the LT1794 has clamps to the supply rails
at the output pins, they may not be large enough to handle
the significant transient energy. External clamping diodes,
such as BAV99s, at each end of the transformer primary
help to shunt this destructive transient energy away from
the amplifier outputs.
TransZorb is a registered trademark of General Instruments, GSI
1794 F16
+
–
1/2
LT1794
–IN
–
+
1/2
LT1794
+IN
12V
SHDN
–12V
12.7
0.1
μ
F
12V –12V
24.9k
1:2
LINE
LOAD
110
1000pF
110
1k
1k
12.7
SHDNREF
0.1
μ
F
12V –12V
BAV99
BAV99
Figure 16. Protecting the Driver Against Load Faults and Line Transients
相关PDF资料 |
PDF描述 |
|---|---|
| LT1794CSW | Dual 500mA, 200MHz xDSL Line Driver Amplifier |
| LT1794IFE | Dual 500mA, 200MHz xDSL Line Driver Amplifier |
| LT1796 | Overvoltage Fault Protected CAN Transceiver |
| LT1796CN8 | Overvoltage Fault Protected CAN Transceiver |
| LT1796CS8 | Overvoltage Fault Protected CAN Transceiver |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1794CFE#PBF | 功能描述:IC AMP XDSL LINE DRIVER 20TSSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1794CFE#TR | 功能描述:IC OPAMP 200MHZ DUAL 20-TSSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1794CFE#TRPBF | 功能描述:IC AMP XDSL LINE DRIVER 20TSSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1794CSW | 功能描述:IC OPAMP 200MHZ DUAL 20-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1794CSW#PBF | 功能描述:IC OPAMP 200MHZ DUAL 20-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,140 系列:AU 类型:收发器 驱动器/接收器数:1/1 规程:CAN 电源电压:5.3 V ~ 27 V 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:管件 其它名称:935267940512AU5790D14AU5790D14-ND |
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