- 您现在的位置：买卖IC网 > PDF目录2082 > LT1204CSW#TRPBF (Linear Technology)IC VIDEOMUX CFA 75MHZ 4IN 16SOIC PDF资料下载
参数资料
| 型号： | LT1204CSW#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC VIDEOMUX CFA 75MHZ 4IN 16SOIC |
| 标准包装： | 1,000 |
| 应用： | 4:1 多路复用器-放大器 |
| 电路数： | 1 |
| -3db带宽： | 75MHz |
| 转换速率： | 1000 V/µs |
| 电流 - 电源： | 19mA |
| 电流 - 输出 / 通道： | 125mA |
| 电压 - 电源，单路/双路(±)： | 10 V ~ 30 V，±5 V ~ 15 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
15
LT1204
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
Multiplexer Expansion Pin 11 and Pin 12
To expand the number of MUX inputs, LT1204s can be
paralleled by shorting their outputs together. The multi-
plexer disable logic has been designed to prevent shoot-
through current when two or more amplifiers have their
outputs shorted together. (Shoot-through current is a
spike of power supply current caused by both amplifiers
being on at once.)
Monitoring Supply Current Spikes
The multiplexer uses a circuit to ensure the disabled
amplifiers do not load or alter the cable termination. When
the LT1204 is disabled (Pin 11 low) the output stage is
turned off and an active buffer senses the output and
drives the feedback pin to the CFA (Figure 2). This boot-
straps the feedback resistors and raises the true output
impedance of the circuit. For the condition where RF = RG
= 1k, the Disable Output Resistance is typically raised to
25k and drops to 20k for AV = 10, RF = 2k and RG = 222
due to loading of the feedback buffer. Operating the
Disable feature with RG < 100 is not recommended.
A shutdown feature (Pin 12 low) reduces the supply
current to 1.5mA and lowers the power dissipation
when the LT1204 is not in use. If the part is shut down,
the bootstrapping is inoperative and the feedback resis-
tors will load the output. If the CFA is operated at a gain
of +1, however, the feedback resistor will not load the
output even in shutdown because there is no resistive
path to ground, but there will be a – 6dB loss through
the cable system.
A frequency response plot shows the effect of using the
disable feature versus using the shutdown feature. In
this example four LT1204s were connected together at
their outputs forming a 16-to-1 MUX. The plot shows the
effect of the bootstrapping circuit that eliminates the
–
+
LT1204
1
3
5
7
13
14
11
EN
V–
16
V+
TO SCOPE
15
75
–
+
LT1204
1
3
5
7
13
14
11
EN
V–
16
15
1k
75
V+
74HC04
75
TEK
CT-1
O
5V
OSCILLATOR
1204 AI13
1k
Timing and Supply Current Waveforms
OSCILLATOR
5V/DIV
VOUT
1V/DIV
IS
10mA/DIV
74HC04
OUTPUT
5V/DIV
1204 AI14
TEE SWITCH
VIN0
TEE SWITCH
VIN1
TEE SWITCH
VIN2
TEE SWITCH
VIN3
V–
LT1204
“ON”
–
+
CFA
“OFF”
FB
RF
RG
VOUT
75
75
CABLE
1204 F02
AV = +1
75
Figure 2. Active Buffer Drives FB Pin 13
相关PDF资料 |
PDF描述 |
|---|---|
| LT1227CS8#TRPBF | IC VIDEO CURRNT FEEDBK AMP 8SOIC |
| LT1252CS8 | IC AMP VIDEO LOW COST SNGL 8SOIC |
| LT1254CS#TRPBF | IC AMP VIDEO LOWCOST QUAD 14SOIC |
| LT1256CS#TRPBF | IC AMP VIDEO FADE CONTRLD 14SOIC |
| LT1394IS8#TRPBF | IC COMPARATOR LOW PWR 7NS 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1205 | 制造商:LINER 制造商全称:Linear Technology 功能描述:150MHz Video Multiplexers |
| LT1205CS | 制造商:Linear Technology 功能描述:Analog Multiplexer/Amp Dual 2:1 16-Pin SOIC N |
| LT1205CS#PBF | 功能描述:IC VIDEO MULTIPLEXER SPDT 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| LT1205CS#TR | 功能描述:IC VIDEO MULTIPLEXER SPDT 16SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| LT1205CS#TRPBF | 功能描述:IC VIDEO MULTIPLEXER SPDT 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:1,000 系列:- 功能:多路复用器 电路:1 x 4:1 导通状态电阻:- 电压电源:双电源 电压 - 电源，单路/双路(±):±5V 电流 - 电源:7mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。