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An Study on DS91M125 125 MHz 1:4  M-LVDS Repeater with LVDS Input <ul><ul><ul><li>Source: National Semiconductor </li></ul...
Introduction <ul><li>Purpose </li></ul><ul><ul><li>Study on DS91M125 125 MHz 1:4  M-LVDS Repeater with LVDS Input </li></u...
Logic Diagram <ul><li>The   DS91M125   is   a   1:4   M-LVDS   repeater   designed   for   driving   and   distributing   ...
Features ■  DC - 125 MHz / 250 Mbps low jitter, low skew, low power operation ■  Independent Driver Enable pins ■  Outputs...
Applications <ul><li>■  Multidrop / Multipoint clock and data distribution. </li></ul><ul><li>■  High-Speed, Low Power, Sh...
Comparison of Key Driver Parameters
M-LVDS Standard Receiver Types <ul><li>The input threshold levels differentiate the two types of M-LVDS receivers.  </li><...
Multipoint Network <ul><li>The M-LVDS Receivers intended for general data transport over multipoint bus where up to 32 Nod...
Differential Driver Test Circuit Differential Driver Test Circuit Differential Driver Waveforms
Differential Driver Full Load Test Circuit Differential Driver Full Load Test Circuit Differential Driver DC Open Test Cir...
Driver Tri-State Delay Test Circuit Driver   Tri-State   Waveforms Driver Tri-State Delay Test Circuit
Typical Performance Curves Driver Propagation V/S Temperature  Driver Rise Time V/S Temperature
AdvancedTCA (ATCA) Clock  Distribution Interface
Additional Resource <ul><li>For ordering the DS91M125, please click the part list or </li></ul><ul><li>Call our sales hotl...
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An Study on DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input

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Study on DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input

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An Study on DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input

  1. 1. An Study on DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input <ul><ul><ul><li>Source: National Semiconductor </li></ul></ul></ul>
  2. 2. Introduction <ul><li>Purpose </li></ul><ul><ul><li>Study on DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input </li></ul></ul><ul><li>Outline </li></ul><ul><ul><li>Logic Diagram </li></ul></ul><ul><ul><li>Features </li></ul></ul><ul><ul><li>Application and ATCA block diagram </li></ul></ul><ul><ul><li>Comparison of Key Driver Parameters </li></ul></ul><ul><ul><li>Multipoint Network </li></ul></ul><ul><li>Content </li></ul><ul><ul><li>14 pages </li></ul></ul>
  3. 3. Logic Diagram <ul><li>The DS91M125 is a 1:4 M-LVDS repeater designed for driving and distributing clock or data signals </li></ul><ul><li>A single DS91M125 channel is a 1:4 repeater that accepts M-LVDS/LVDS/CML/LVPECL signals and converts them to M-LVDS signal levels. </li></ul><ul><li>Each output has an associated independent driver enable pin. </li></ul>
  4. 4. Features ■ DC - 125 MHz / 250 Mbps low jitter, low skew, low power operation ■ Independent Driver Enable pins ■ Outputs Conform to TIA/EIA-899 M-LVDS Standard ■ Controlled transition times minimize reflections ■ Inputs Conform to TIA/EIA-644-A LVDS Standard ■ 8 kV ESD on M-LVDS output pins protects adjoining components ■ Flow-through pin out simplifies PCB layout ■ Industrial operating temperature range (−40°C to +85°C) ■ Available in a space saving SOIC-16 package
  5. 5. Applications <ul><li>■ Multidrop / Multipoint clock and data distribution. </li></ul><ul><li>■ High-Speed, Low Power, Short-Reach alternative to </li></ul><ul><li>TIA/EIA-485/422. </li></ul><ul><li>■ Clock distribution in AdvancedTCA (ATCA) and MicroTCA (μTCA, uTCA) backplanes. </li></ul>
  6. 6. Comparison of Key Driver Parameters
  7. 7. M-LVDS Standard Receiver Types <ul><li>The input threshold levels differentiate the two types of M-LVDS receivers. </li></ul><ul><li>Type 1 receivers have threshold levels centred at 0V differential and provide higher noise margin than Type 2 receivers. </li></ul><ul><li>Type 1 receivers are used in clock or data transmission applications </li></ul><ul><li>Type 2 receivers have threshold levels shifted by +100 mV differential. </li></ul><ul><li>Type 2 receivers are used in the failsafe, Wired-OR function. </li></ul>
  8. 8. Multipoint Network <ul><li>The M-LVDS Receivers intended for general data transport over multipoint bus where up to 32 Nodes can be connected. </li></ul><ul><li>M-LVDS Standard specifies Maximum signaling rate of 500Mbps based on 1 ns minimum transition time. </li></ul><ul><li>M-LVDS drivers has stronger drive current (IOD) This enables this device to drive signals across multipoint network that are typically doubly terminated. </li></ul>
  9. 9. Differential Driver Test Circuit Differential Driver Test Circuit Differential Driver Waveforms
  10. 10. Differential Driver Full Load Test Circuit Differential Driver Full Load Test Circuit Differential Driver DC Open Test Circuit
  11. 11. Driver Tri-State Delay Test Circuit Driver Tri-State Waveforms Driver Tri-State Delay Test Circuit
  12. 12. Typical Performance Curves Driver Propagation V/S Temperature Driver Rise Time V/S Temperature
  13. 13. AdvancedTCA (ATCA) Clock Distribution Interface
  14. 14. Additional Resource <ul><li>For ordering the DS91M125, please click the part list or </li></ul><ul><li>Call our sales hotline </li></ul><ul><li>For additional inquires contact our technical service hotline </li></ul><ul><li>For more product information go to </li></ul><ul><ul><li>http://www.national.com/pf/DS/DS91M125.html#General%20Description </li></ul></ul>

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