SNCS103E November   2004  – August 2018 LMH6574

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Frequency Response vs VOUT
      2.      Frequency Response vs Gain
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
    2.     Truth Table
  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 ±5 V
    6. 6.6 Electrical Characteristics ±3.3 V
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Functional Block Diagram
    2. 7.2 Feature Description
      1. 7.2.1 Video Performance
      2. 7.2.2 Feedback Resistor Selection
      3. 7.2.3 Other Applications
      4. 7.2.4 Driving Capacitive Loads
      5. 7.2.5 ESD Protection
    3. 7.3 Device Functional Modes
      1. 7.3.1 SD vs EN
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Multiplexer Expansion
  9. 9 Power Supply Recommendations
    1. 9.1 Power Dissipation
  10. 10Layout
    1. 10.1 Layout Guidelines
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.2.4 Driving Capacitive Loads

Capacitive output loading applications will benefit from the use of a series output resistor ROUT. Figure 28 shows the use of a series output resistor, ROUT, to stabilize the amplifier output under capacitive loading. Capacitive loads of 5 to 120 pF are the most critical, causing ringing, frequency response peaking and possible oscillation. Figure 29 provides a recommended value for selecting a series output resistor for mitigating capacitive loads. The values suggested in the charts are selected for 0.5 dB or less of peaking in the frequency response. This gives a good compromise between settling time and bandwidth. For applications where maximum frequency response is needed and some peaking is tolerable, the value of ROUT can be reduced slightly from the recommended values.

LMH6574 20119724.gifFigure 28. Decoupling Capacitive Loads
LMH6574 20119715.gif
Figure 29. Suggested ROUT vs Capacitive Load
LMH6574 20119714.gif
Figure 30. Frequency Response vs Capacitive Load