SNLS530D April   2016  – June 2018 LMH1219

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Block Diagram
  4. 4 Revision History
  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 AC Timing Specifications
    7. 6.7 Serial Parallel Interface (SPI) AC 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 Configuration Pins
      2. 7.3.2  Input Carrier Detect
      3. 7.3.3  -6 dB Splitter Mode Launch Amplitude for IN0
      4. 7.3.4  Continuous Time Linear Equalizer (CTLE)
        1. 7.3.4.1 Adaptive Cable Equalizer (IN0+)
        2. 7.3.4.2 Adaptive PCB Trace Equalizer (IN1±)
      5. 7.3.5  Input-Output Mux Selection
      6. 7.3.6  Clock and Data Recovery (CDR) Reclocker
      7. 7.3.7  Internal Eye Opening Monitor (EOM)
      8. 7.3.8  Output Function Control
      9. 7.3.9  Output Driver Amplitude and De-Emphasis Control
      10. 7.3.10 Status Indicators and Interrupts
        1. 7.3.10.1 LOCK_N (Lock Indicator)
        2. 7.3.10.2 CD_N (Carrier Detect)
        3. 7.3.10.3 INT_N (Interrupt)
      11. 7.3.11 Additional Programmability
        1. 7.3.11.1 Cable Length Indicator (CLI)
        2. 7.3.11.2 Digital MUTEREF
    4. 7.4 Device Functional Modes
      1. 7.4.1 System Management Bus (SMBus) Mode
        1. 7.4.1.1 SMBus Read and Write Transactions
          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
          1. 7.4.2.1.1 SPI Write Transaction Format
          2. 7.4.2.1.2 SPI Read Transaction Format
        2. 7.4.2.2 SPI Daisy Chain
    5. 7.5 LMH1219 Register Map
      1. 7.5.1 Share Register Page
      2. 7.5.2 CTLE/CDR Register Page
      3. 7.5.3 CableEQ/Drivers Register Page
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 General Guidance for SMPTE and 10 GbE Applications
      2. 8.1.2 Optimizing Time to Adapt and Lock
      3. 8.1.3 LMH1219 and LMH0324 Compatibility
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detail Design Procedure
      3. 8.2.3 Recommended VOD and DEM Register Settings
      4. 8.2.4 Application Performance Plots
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 PCB Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.2.4 Application Performance Plots

Depending on the selected input, the LMH1219 performance was measured with the test setups shown in Figure 23 and Figure 24.

LMH1219 app_test_setup_diagram_IN0.gifFigure 23. Test Setup for LMH1219 Cable Equalizer (IN0+)
LMH1219 app_test_setup_diagram_IN1.gifFigure 24. Test Setup for LMH1219 PCB Equalizer (IN1±)

The eye diagrams in this subsection show how the LMH1219 improves overall signal integrity in the data path for 75-Ω coax cable input length (CC) when IN0 is selected and 100-Ω differential FR4 PCB trace when IN1 is selected.

LMH1219 12G_75m_85mvDIV_14psDIV_EQonly.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = L
Figure 25. 11.88 Gbps, CC = 75 m Belden 1694A,
EQ Only
LMH1219 6G_120m_85mvDIV_28psDIV_EQOnly.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = L
Figure 27. 5.94 Gbps, CC = 120 m Belden 1694A,
EQ Only
LMH1219 3G_200m_85mvDIV_56psDIV_EQonly.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = L
Figure 29. 2.97 Gbps, CC = 200 m Belden 1694A,
EQ Only
LMH1219 1.5G_280m_85mvDIV_112psDIV_EQonly.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = L
Figure 31. 1.485 Gbps, CC = 280 m Belden 1694A,
EQ Only
LMH1219 270M_600m_85mvDIV_617psDIV_EQonly.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = L
Figure 33. 270 Mbps, CC = 600 m Belden 1694A,
EQ Only
LMH1219 IN1_10GbE_20in5mil_100mvDIV_30psDIV_EQonly_manual1100.gif
A. IN1 Selected, VOD_DE = H, IN_OUT_SEL = L, OUT_CTRL = L
Figure 35. 10.3125 Gbps, TL = 20 in. 5-Mil FR4,
EQ Only
LMH1219 IN1_12G_20in5mil_100mvDIV_20psDIV_EQonly_manual1100.gif
A. IN1 Selected, VOD_DE = H, IN_OUT_SEL = L, OUT_CTRL = L,
Override reference rate to lock to SMPTE rates
Figure 37. 11.88 Gbps, TL = 20 in. 5-Mil FR4,
EQ Only
LMH1219 12G_75m_85mvDIV_14psDIV_Retimed.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = F
Figure 26. 11.88 Gbps, CC = 75 m Belden 1694A,
Reclocked
LMH1219 6G_120m_85mvDIV_28psDIV_Retimed.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = F
Figure 28. 5.94 Gbps, CC = 120 m Belden 1694A,
Reclocked
LMH1219 3G_200m_85mvDIV_56psDIV_Retimed.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = F
Figure 30. 2.97 Gbps, CC = 200 m Belden 1694A,
Reclocked
LMH1219 1.5G_280m_85mvDIV_112psDIV_Retimed.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = F
Figure 32. 1.485 Gbps, CC = 280 m Belden 1694A,
Reclocked
LMH1219 270M_600m_85mvDIV_617psDIV_Retimed.gif
A. IN0 Selected, VOD_DE = H, IN_OUT_SEL = H, OUT_CTRL = F
Figure 34. 270 Mbps, CC = 600 m Belden 1694A,
Reclocked
LMH1219 IN1_10GbE_20in5mil_100mvDIV_30psDIV_Retimed.gif
A. IN1 Selected, VOD_DE = H, IN_OUT_SEL = L, OUT_CTRL = F
Figure 36. 10.3125 Gbps, TL = 20 in. 5-Mil FR4,
Reclocked
LMH1219 IN1_12G_20in5mil_100mvDIV_20psDIV_Retimed.gif
A. IN1 Selected, VOD_DE = H, IN_OUT_SEL = L, OUT_CTRL = F,
Override reference rate to lock to SMPTE rates
Figure 38. 11.88 Gbps, TL = 20 in. 5-Mil FR4,
Reclocked