- 您现在的位置：买卖IC网 > PDF目录377716 > LT1794 (Linear Technology Corporation) Dual 500mA, 200MHz xDSL Line Driver Amplifier PDF资料下载
参数资料
| 型号： | LT1794 |
| 厂商： | Linear Technology Corporation |
| 英文描述： | Dual 500mA, 200MHz xDSL Line Driver Amplifier |
| 中文描述： | 双500mA的，200MHz的xDSL线路驱动放大器 |
| 文件页数： | 8/20页 |
| 文件大小： | 275K |
| 代理商： | LT1794 |
8
LT1794
outputs are in a high impedance state. Part to part varia-
tions however, will cause inconsistent control of the qui-
escent current if direct voltage drive of the SHDN pin is used.
Using a single external resistor, R
BIAS
, connected in one of
two ways provides a much more predictable control of the
quiescent supply current. Figure 2 illustrates the effect on
supply current per amplifier with R
BIAS
connected be-
tween the SHDN pin and the 12V V
+
supply of the LT1794
and the approximate design equations. Figure 3 illustrates
the same control with R
BIAS
connected between the
SHDNREF pin and ground while the SHDN pin is tied to V
+
.
Either approach is equally effective.
APPLICATIOU
W
U
U
Figure 1. Internal Current Biasing Circuitry
2k
SHDN
SHDNREF
TO
START-UP
CIRCUITRY
1k
1794 F01
I
TO AMPLIFIERS
BIAS CIRCUITRY
2I
I
2I
5I
2
5
I
BIAS
=
I
SUPPLY
PER AMPLIFIER (mA) = 64 I
BIAS
I
SHDN
= I
SHDNREF
R
BIAS
(k
)
0
I
S
10
20
30
5
15
25
10
1794 F02
7
40
70
100
130
160
190
V
S
=
±
12V
V
+
= 12V
R
BIAS
SHDN
SHDNREF
R
BIAS
=
25.6 – 2k
V
+
– 1.2V
I
S
PER AMPLIFIER (mA)
I
S
PER AMPLIFIER
(mA)
25.6
V
+
– 1.2V
R
BIAS
+ 2k
≈
R
BIAS
(k
)
4
7
10
50
90
130
170
210
250
30
70
100
150
190
230
270 290
I
S
20
25
30
35
40
1794 F03
5
10
15
0
45
V
S
=
±
12V
V
+
= 12V
R
BIAS
SHDN
SHDNREF
R
BIAS
=
64 – 5k
V
+
– 1.2V
I
S
PER AMPLIFIER (mA)
I
S
PER AMPLIFIER
(mA)
64
V
+
– 1.2V
R
BIAS
+ 5k
≈
Figure 2. R
BIAS
to V
+
Current Control
Figure 3. R
BIAS
to Ground Current Control
相关PDF资料 |
PDF描述 |
|---|---|
| LT1794CFE | Dual 500mA, 200MHz xDSL Line Driver Amplifier |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1794CFE | 功能描述:IC AMP XDSL LINE DRIVER 20TSSOP 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#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 |
发布紧急采购，3分钟左右您将得到回复。