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| 型号： | LT1675CMS8-1#TR |
| 厂商： | Linear Technology |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC MUX RGB TRIPLE 250MHZ 8MSOP |
| 标准包装： | 2,500 |
| 类型： | 多路复用器 |
| 应用： | 驱动器，处理，切换 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
9
LT1675/LT1675-1
16751fb
APPLICATIONS INFORMATION
WU
U
Power Supplies
The LT1675 will function with supply voltages below
±2V
(4V total), however, to ensure a full 1VP-P video signal
(2VP-P at the output pins), the power supply voltage
should be between
±4V to ±6V. The LT1675 is designed
to operate on
±5V, and at no time should the supplies
exceed
±6V. The power supplies should be bypassed with
quality tantalum capacitors. It may be necessary to add a
0.01
F or 0.1F in parallel with the tantalum capacitors if
there is excessive ringing on the output waveform. Even
though the LT1675 is well behaved, bypass capacitors
should be placed as close to the LT1675 as possible.
Smallest Package and PC Board Space
The LT1675 has the internal gain set for + 2V/V or 6dB,
because it is designed to drive a double-terminated 50
or
75
cable that has an inherent 6dB loss. There are several
advantages to setting the gain internally. This topology
eliminates six gain set resistors, reduces the pin count of
the package and eliminates stray capacitance on the
sensitive feedback node. The LT1675 fits into the small
SSOP package, and these advantages lead to the smallest
PC board footprint with enhanced performance. The
LT1675-1 eliminates two gain set resistors and is available
in the tiny MSOP package and the cost-effective SO-8
package.
Fast Switching
The key to the LT1675 fast switching speed is Linear
Technology’s proprietary high speed bipolar process.
Internal switches can change state in less than 1ns, but the
output of the MUX switches in about 2.5ns, as shown in
Figure 1. The additional delay is due to the finite bandwidth
and the slew rate of the current feedback amplifier that
drives the cable.
For minimum ringing, it is important to minimize the load
capacitance on the output of the part. This is normally not
a problem in a controlled impedance environment, but
stray PC board capacitance and scope probe capacitance
can degrade the pulse fidelity. Figure 2 shows the
response of the output to various capacitive loads mea-
sured with a 10pF scope probe.
MEASURED AT PIN 15
RL = 150, 10pF SCOPE PROBE
1675 F02
CL = 20pF
CL = 10pF
CL = 0pF
2V/DIV
Figure 2. Response to Capacitive Loads
1V/DIV
500mV/DIV
0V
3V
SELECT
PIN 10
RED OUT
PIN 15
RED 1 = 1V, RED 2 = 0V
MEASURED BETWEEN 75
BACK TERMINATION
AND 75
LOAD
1675 F01
Figure 1. Toggling at 25MHz
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相关代理商/技术参数 |
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|---|---|
| LT1675CS8-1 | 功能描述:IC MUX RGB HI-SPEED SINGLE 8SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| LT1675CS8-1#PBF | 功能描述:IC MUX RGB HI-SPEED SINGLE 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| LT1675CS8-1#TR | 功能描述:IC MUX RGB TRIPLE 250MHZ 8SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| LT1675CS8-1#TRPBF | 功能描述:IC MUX RGB HI-SPEED SINGLE 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| LT1675CSM8-1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Interface IC |
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