SNOSB21E May   2008  – July 2024 LMH6518

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Preamplifier
        1. 6.3.1.1 Primary Output Amplifier
        2. 6.3.1.2 Auxiliary Amplifier
      2. 6.3.2 Overvoltage Clamp
      3. 6.3.3 Attenuator
      4. 6.3.4 Digital Control Block
    4. 6.4 Device Functional Modes
      1. 6.4.1 Primary Amplifier
      2. 6.4.2 Auxiliary Output
    5. 6.5 Programming
      1. 6.5.1 Logic Functions
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Oscilloscope Front End
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Settings and ADC SPI Code (ECM)
          2. 7.2.1.2.2 Input and Output Considerations
            1. 7.2.1.2.2.1 Output Swing, Clamping, and Operation Beyond Full Scale
          3. 7.2.1.2.3 Oscilloscope Trigger Applications
        3. 7.2.1.3 Application Curves
      2. 7.2.2 JFET LNA Implementation
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
          1. 7.2.2.2.1 Attenuator Design
        3. 7.2.2.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
      2. 8.1.2 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RGH|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.7 Typical Characteristics

at input CM = 2.5-V, VCM = 1.2-V, VCM AUX = 1.2-V, single-ended input drive, VCC = 5-V, VDD = 3.3-V,
RL = 100 Ω differential (both main and auxiliary outputs), VOUT = 0.7 VPP differential (both main and auxiliary outputs), main output specification (auxiliary is labeled), full bandwidth setting, gain = 18.8-dB (preamp LG, 0-dB ladder attenuation), and full power setting (with auxiliary output turned on) (unless otherwise noted)

LMH6518 Response (LG, 0-dB)
 
Figure 5-1 Response (LG, 0-dB)
LMH6518 Response (HG, 0-dB)
 
Figure 5-3 Response (HG, 0-dB)
LMH6518 Small Signal Response (HG, 0-dB)
 
Figure 5-5 Small Signal Response (HG, 0-dB)
LMH6518 Phase vs Gain
 
Figure 5-7 Phase vs Gain
LMH6518 Auxiliary Response Over Temperature
 
Figure 5-9 Auxiliary Response Over Temperature
LMH6518 Response vs Gain
 
Figure 5-11 Response vs Gain
LMH6518 Response vs Gain
 
Figure 5-13 Response vs Gain
LMH6518 Balance Error
 
Figure 5-15 Balance Error
LMH6518 Noise vs Ladder Attenuation
 
Figure 5-17 Noise vs Ladder Attenuation
LMH6518 Noise Figure vs Gain
 
Figure 5-19 Noise Figure vs Gain
LMH6518 Input Current Noise vs Frequency
 
Figure 5-21 Input Current Noise vs Frequency
LMH6518 HD3 vs Ladder Attenuation
 
Figure 5-23 HD3 vs Ladder Attenuation
LMH6518 HD3 vs Ladder Attenuation
 
Figure 5-25 HD3 vs Ladder Attenuation
LMH6518 Main and Auxiliary Distortion Comparison
 
Figure 5-27 Main and Auxiliary Distortion Comparison
LMH6518 Gain vs Ladder Attenuation
 
Figure 5-29 Gain vs Ladder Attenuation
LMH6518 Auxiliary Gain Accuracy vs Ladder Attenuation
 
Figure 5-31 Auxiliary Gain Accuracy vs Ladder Attenuation
LMH6518 AV_CM
 
Figure 5-33 AV_CM
LMH6518 AV_CM
 
Figure 5-35 AV_CM
LMH6518 Step Response
 
Figure 5-37 Step Response
LMH6518 Step Response
 
Figure 5-39 Step Response
LMH6518 Output Offset Voltage (Typical Unit 1)
 
Figure 5-41 Output Offset Voltage (Typical Unit 1)
LMH6518 Output Offset Voltage (Typical Unit 3)
 
Figure 5-43 Output Offset Voltage (Typical Unit 3)
LMH6518 Supply Current vs Supply Voltage
 
Figure 5-45 Supply Current vs Supply Voltage
LMH6518 Input Bias Current vs Input CM
 
Figure 5-47 Input Bias Current vs Input CM
LMH6518 Filter BW vs Gain
 
Figure 5-49 Filter BW vs Gain
LMH6518 Output vs Input
 
Figure 5-51 Output vs Input
LMH6518 Overdrive Recovery Time (Return to Zero)
 
Figure 5-53 Overdrive Recovery Time (Return to Zero)
LMH6518 Phase (LG, 0-dB)
 
Figure 5-2 Phase (LG, 0-dB)
LMH6518 Small Signal Response (LG, 0-dB)
 
Figure 5-4 Small Signal Response (LG, 0-dB)
LMH6518 Response vs Gain
 
Figure 5-6 Response vs Gain
LMH6518 Response Over Temperature
 
Figure 5-8 Response Over Temperature
LMH6518 Main vs Auxiliary Response
 
Figure 5-10 Main vs Auxiliary Response
LMH6518 Phase vs Gain
 
Figure 5-12 Phase vs Gain
LMH6518 Phase vs Gain
 
Figure 5-14 Phase vs Gain
LMH6518 Linear Phase Deviation and Group Delay
 
Figure 5-16 Linear Phase Deviation and Group Delay
LMH6518 Noise vs Ladder Attenuation
 
Figure 5-18 Noise vs Ladder Attenuation
LMH6518 Input Voltage Noise vs Frequency
 
Figure 5-20 Input Voltage Noise vs Frequency
LMH6518 HD2 vs Ladder Attenuation
 
Figure 5-22 HD2 vs Ladder Attenuation
LMH6518 HD2 vs Ladder Attenuation
 
Figure 5-24 HD2 vs Ladder Attenuation
LMH6518 Main and Auxiliary Distortion Comparison
 
Figure 5-26 Main and Auxiliary Distortion Comparison
LMH6518 Distortion vs Output Power
 
Figure 5-28 Distortion vs Output Power
LMH6518 Gain Accuracy vs Ladder Attenuation
 
Figure 5-30 Gain Accuracy vs Ladder Attenuation
LMH6518 Gain Matching vs Ladder Attenuation
 
Figure 5-32 Gain Matching vs Ladder Attenuation
LMH6518 AV_CM
 
Figure 5-34 AV_CM
LMH6518 –1-dB Compression vs Ladder Attenuation
 
Figure 5-36 –1-dB Compression vs Ladder Attenuation
LMH6518 Step Response
 
Figure 5-38 Step Response
LMH6518 Step Response
 
Figure 5-40 Step Response
LMH6518 Output Offset Voltage (Typical Unit 2)
 
Figure 5-42 Output Offset Voltage (Typical Unit 2)
LMH6518 VOS_CM vs VCM
 
Figure 5-44 VOS_CM vs VCM
LMH6518 Supply Current vs Supply Voltage
 
Figure 5-46 Supply Current vs Supply Voltage
LMH6518 Auxiliary Output Voltage (Hi-Z Mode)
 
Figure 5-48 Auxiliary Output Voltage (Hi-Z Mode)
LMH6518 Output vs Input
 
Figure 5-50 Output vs Input
LMH6518 Output vs Input
 
Figure 5-52 Output vs Input