SBOSA33C September   2021  – June 2026 LMH5485-SP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Related Products
  6. 5 Pin Configuration and Functions
  7. 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 for VS = 5V
    6. 6.6  Electrical Characteristics for VS = 3V
    7. 6.7  Quality Conformance Inspection
    8. 6.8  Typical Characteristics: 5V Single Supply
    9. 6.9  Typical Characteristics: 3V Single Supply
    10. 6.10 Typical Characteristics: 3V to 5V Supply Range
  8. 7 Parameter Measurement Information
    1. 7.1 Example Characterization Circuits
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Differential I/O
      2. 8.3.2 Power-Down Control Pin (PD)
        1. 8.3.2.1 Operating the Power Shutdown Feature
      3. 8.3.3 Input Overdrive Operation
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operation from Single-Ended Sources to Differential Outputs
        1. 8.4.1.1 AC-Coupled Signal Path Considerations for Single-Ended Input to Differential Output Conversion
        2. 8.4.1.2 DC-Coupled Input Signal Path Considerations for Single-Ended to Differential Conversion
      2. 8.4.2 Differential-Input to Differential-Output Operation
        1. 8.4.2.1 AC-Coupled, Differential-Input to Differential-Output Design Issues
        2. 8.4.2.2 DC-Coupled, Differential-Input to Differential-Output Design Issues
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Interfacing to High-Performance ADCs
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

6.10 Typical Characteristics: 3V to 5V Supply Range

at Vs+ = 3V and 5V, Vs– = GND, Vocm is open, 50Ω single-ended input to differential output, gain = 2V/V, Rload = 500Ω, and TA ≅ 25°C (unless otherwise noted)

LMH5485-SP Main Amplifier Differential Open-Loop Gain and Phase vs Frequency
 
 
Figure 6-9 Main Amplifier Differential Open-Loop Gain and Phase vs Frequency
LMH5485-SP Input Spot Noise Over Frequency
 
 
Figure 6-11 Input Spot Noise Over Frequency
LMH5485-SP CMRR Over Frequency
Common-mode in to differential out, gain of 2 simulation
 
Figure 6-13 CMRR Over Frequency
LMH5485-SP Output Common-Mode Noise
Vocm input either driven to midsupply by low impedance source, or allowed to float and default to midsupply
Figure 6-15 Output Common-Mode Noise
LMH5485-SP –PSRR vs Vocm Approaching Vs–
Single-ended to differential gain of 2 (see Figure 7-1), PSRR for negative supply to differential output (1kHz simulation)
Figure 6-17 –PSRR vs Vocm Approaching Vs–
LMH5485-SP Input Offset Voltage
Total of 4618 units for each supply.
For Vs = 5V: μ = -35.1μV, σ = 38.9μV
Figure 6-19 Input Offset Voltage
LMH5485-SP Differential Output Voltage vs Rload
Maximum differential output swing, Vocm at midsupply
Figure 6-21 Differential Output Voltage vs Rload
LMH5485-SP Common-Mode Output Offset from Vs+ / 2 Default Value
Vocm input floating. Total of 4618 units for each supply,
For Vs = 5V: μ = 6.8mV, σ = 3.9mV
Figure 6-23 Common-Mode Output Offset from Vs+ / 2 Default Value
LMH5485-SP PD Turn-On Waveform
10MHz, 1VPP input single to differential gain of 2,
see Figure 7-2
Figure 6-25 PD Turn-On Waveform
LMH5485-SP Closed-Loop Output Impedance
Single-ended input to differential output, simulated differential output impedance, see Figure 7-1
Figure 6-10 Closed-Loop Output Impedance
LMH5485-SP Output Balance Error Over Frequency
Single-ended input to differential output, gain of 2 (see Figure 7-1), simulated with 1% resistor, worst-case mismatch
Figure 6-12 Output Balance Error Over Frequency
LMH5485-SP PSRR Over Frequency
Single-ended to differential, gain of 2 (see Figure 7-1) PSRR simulated to differential output
Figure 6-14 PSRR Over Frequency
LMH5485-SP Vocm Offset vs Vocm Setting
Average Vocm output offset of 37 units, standard deviation
< 2.5mV, see Figure 7-2
Figure 6-16 Vocm Offset vs Vocm Setting
LMH5485-SP +PSRR vs Vocm Approaching Vs+
Single-ended to differential gain of 2 (see Figure 7-1), PSRR for positive supply to differential output (1kHz simulation)
Figure 6-18 +PSRR vs Vocm Approaching Vs+
LMH5485-SP Input Offset Current
Total of 4618 units for each supply.
For Vs = 5V: μ = 16.7nA, σ = 62.3nA
Figure 6-20 Input Offset Current
LMH5485-SP Supply Current vs PD Voltage
 
Figure 6-22 Supply Current vs PD Voltage
LMH5485-SP Common-Mode Output Offset from Driven Vocm
Total of 4618 units for each supply,
For Vs = 5V: μ = 0.3mV, σ = 1.3mV
Figure 6-24 Common-Mode Output Offset from Driven Vocm
LMH5485-SP PD Turn-Off Waveform
10MHz, 1VPP input single to differential gain of 2,
see Figure 7-2
Figure 6-26 PD Turn-Off Waveform