ZHCSKE0B March   2017  – October 2019 LMH1208

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     简化方框图
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Recommended SMBus Interface Timing Specifications
    7. 6.7 Serial Parallel Interface (SPI) Timing Specifications
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 4-Level Input Pins and Thresholds
      2. 7.3.2 OUT0_SEL and SDI_OUT2_SEL Control
      3. 7.3.3 Input Signal Detect
      4. 7.3.4 Continuous Time Linear Equalizer (CTLE)
      5. 7.3.5 Output Driver Control
        1. 7.3.5.1 Line-Side Output Cable Driver (SDI_OUT1+, SDI_OUT2+)
          1. 7.3.5.1.1 Output Amplitude (VOD)
          2. 7.3.5.1.2 Output Pre-Emphasis
          3. 7.3.5.1.3 Output Slew Rate
          4. 7.3.5.1.4 Output Polarity Inversion
        2. 7.3.5.2 Host-Side 100-Ω Output Driver (OUT0±)
      6. 7.3.6 Status Indicators and Interrupts
        1. 7.3.6.1 SD_N (Signal Detect)
        2. 7.3.6.2 INT_N (Interrupt)
    4. 7.4 Device Functional Modes
      1. 7.4.1 System Management Bus (SMBus) Mode
        1. 7.4.1.1 SMBus Read and Write Transaction
          1. 7.4.1.1.1 SMBus Write Operation Format
          2. 7.4.1.1.2 SMBus Read Operation Format
      2. 7.4.2 Serial Peripheral Interface (SPI) Mode
        1. 7.4.2.1 SPI Read and Write Transactions
        2. 7.4.2.2 SPI Write Transaction Format
        3. 7.4.2.3 SPI Read Transaction Format
        4. 7.4.2.4 SPI Daisy Chain
    5. 7.5 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 SMPTE Requirements and Specifications
      2. 8.1.2 LMH1208 and LMH1228 Compatibility
    2. 8.2 Typical Applications
      1. 8.2.1 Dual Cable Driver
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Distribution Amplifier
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Board Stack-Up and Ground References
      2. 10.1.2 High-Speed PCB Trace Routing and Coupling
      3. 10.1.3 Anti-Pads
      4. 10.1.4 BNC Connector Layout and Routing
      5. 10.1.5 Power Supply and Ground Connections
      6. 10.1.6 Footprint Recommendations
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 出口管制提示
    7. 11.7 Glossary
  12. 12机械、封装和可订购信息
    1. 12.1 Package Option Addendum
      1. 12.1.1 Packaging Information
      2. 12.1.2 Tape and Reel Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.2.2.3 Application Curves

The LMH1208 performance on OUT0± was measured with the test setup shown in Figure 21.

LMH1208 app_test_setup_diagram_OUT0.gifFigure 34. Test Setup for LMH1208 to OUT0±

The eye diagrams in this subsection show how the LMH1208 improves overall signal integrity in the data path for 100-Ω differential FR4 PCB trace at IN0±.

LMH1208 CD_OUT0_EQOnly_HOSTEQ0H_11.88_PRBS10_110mV_14ps.png
Measured at OUT0±
HOST_EQ0 = H, SDI_OUT2_SEL = L, SLEW_CTRL = H
Figure 35. 11.88 Gbps, TL = 1" FR4
LMH1208 CD_OUT0_EQOnly_HOSTEQ0H_2.97_PRBS10_110mV_56ps.png
Measured at OUT0±
HOST_EQ0 = H, SDI_OUT2_SEL = L, SLEW_CTRL = F
Figure 37. 2.97 Gbps, TL = 1" FR4
LMH1208 CD_OUT0_EQOnly_HOSTEQ0H_270M_PRBS10_110mV_617ps.png
Measured at OUT0±
HOST_EQ0 = H, SDI_OUT2_SEL = L, SLEW_CTRL = L
Figure 39. 270 Mbps, TL = 1" FR4
LMH1208 CD_OUT0_EQOnly_HOSTEQ0H_5.94_PRBS10_110mV_28ps.png
Measured at OUT0±
HOST_EQ0 = H, SDI_OUT2_SEL = L, SLEW_CTRL = H
Figure 36. 5.94 Gbps, TL = 1" FR4
LMH1208 CD_OUT0_EQOnly_HOSTEQ0H_1.485_PRBS10_110mV_112ps.png
Measured at OUT0±
HOST_EQ0 = H, SDI_OUT2_SEL = L, SLEW_CTRL = F
Figure 38. 1.485 Gbps, TL = 1" FR4
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