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| 型号： | MAX3812USA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER CABLE SD/HD 8-SOIC |
| 标准包装： | 100 |
| 类型： | 驱动器 |
| 驱动器/接收器数： | 1/0 |
| 规程： | LVDS |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
MAX3812
Slew-Rate Selection Switch
The MAX3812 output has a selectable slew-rate in
order to achieve compliance to SMPTE 259M/344M
and SMPTE 292M. Output slew rate is selected with the
SD/HD input (Figure 4). The SD/HD pin must be set
high for SMPTE 259M/344M standards and low for
SMPTE 292M standards.
Differential Data Outputs
The MAX3812 differential data outputs are current-mode
logic, CML (Figure 5). Each side of the differential output
will drive 800mVP-P into a doubly terminated 75
trans-
mission line (RSET = 750
).
The cable driver output must have a source impedance
of 75
and a return loss of at least 15dB between 5MHz
and 1.485GHz to comply with the SMPTE 259M, SMPTE
344M, and SMPTE 292M standards. In order to meet the
return loss specification, the output network shown in
the Typical Application Circuit is recommended.
The value of the output inductor is typically 6.8nH, but the
value will vary depending on PC board layout. If the out-
puts are AC-coupled, a minimum capacitor value of 4.7F
should be used to accommodate SMPTE pathological
test signals.
When measuring output return loss, it is necessary to take
the measurement for both a logic-high and logic-low
state. This is due to the output capacitance being slightly
dependent on the logic state. See the Output Return Loss
graph in the Typical Operating Characterisitics.
Output Voltage Swing Control
The external RSET resistor connected between VCC and
the RSET pin controls the output voltage swing (Figure 5).
Typically the output voltage swing is set to 800mVP-P
using a value of 750
. For output voltage swings other
than 800mVP-P, see the graph Output Voltage Swing vs.
RSET given in the Typical Operating Characteristics.
Using RSET values below 500
is not recommended.
The RSET resistor should be placed as close as possible
to the RSET pin and the capacitance at this node should
be minimized.
Applications Information
Layout Considerations
Use controlled-impedance transmission lines to interface
with the MAX3812 high-speed inputs and outputs.
Power-supply decoupling capacitors should be placed
as close as possible to the VCC connections. To support
a 75
transmission-line environment at the outputs, it is
necessary to minimize the parasitic capacitance by
removing the PC board ground plane from under the out-
put pins and output components. Transmission line
stubs associated with BNC connectors should be mini-
mized. Edge-mount BNC connectors are recommended.
Multirate SMPTE SD/HD Cable Driver
with Selectable Slew Rate
6
_______________________________________________________________________________________
VCC
SD/HD
ESD
STRUCTURES
VCC
40k
5k
MAX3812
Figure 4. Slew-Rate Selection Switch
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3812USA+ | 功能描述:缓冲器和线路驱动器 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3812USA+T | 功能描述:缓冲器和线路驱动器 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3812USA-T | 功能描述:缓冲器和线路驱动器 RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3814CHJ+ | 功能描述:均衡器 DVI/HDMI TMDS Fr-4 & Cable EQ/Driver RoHS:否 制造商:Texas Instruments |
| MAX3814CHJ+T | 功能描述:IC DRVR/EQUALIZER CABLE 32-TQFP 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:1,240 系列:GD 类型:收发器 驱动器/接收器数:3/5 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:20-DIP（0.300"，7.62mm） 供应商设备封装:20-PDIP 包装:管件 |
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