SBOS849B
December 2017 – February 2019
LMH5401-SP
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
LMH5401-SP Small Signal Frequency Response
LMH5401-SP Driving an ADC12D1620QML
4
Revision History
5
Description (continued)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics: VS = 5 V
7.6
Electrical Characteristics: VS = 3.3 V
7.7
Typical Characteristics: 5 V
7.8
Typical Characteristics: 3.3 V
8
Parameter Measurement Information
8.1
Output Reference Nodes and Gain Nomenclature
8.2
ATE Testing and DC Measurements
8.3
Frequency Response
8.4
S-Parameters
8.5
Frequency Response with Capacitive Load
8.6
Distortion
8.7
Noise Figure
8.8
Pulse Response, Slew Rate, and Overdrive Recovery
8.9
Power Down
8.10
VCM Frequency Response
8.11
Test Schematics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Fully-Differential Amplifier
9.3.2
Operations for Single-Ended to Differential Signals
9.3.2.1
AC-Coupled Signal Path Considerations for Single-Ended Input to Differential Output Conversion
9.3.2.2
DC-Coupled Input Signal Path Considerations for SE-DE Conversions
9.3.2.3
Resistor Design Equations for Single-to-Differential Applications
9.3.2.4
Input Impedance Calculations
9.3.3
Differential-to-Differential Signals
9.3.3.1
AC-Coupled, Differential-Input to Differential-Output Design Issues
9.3.3.2
DC-Coupled, Differential-Input to Differential-Output Design Issues
9.3.4
Output Common-Mode Voltage
9.4
Device Functional Modes
9.4.1
Operation With a Split Supply
9.4.2
Operation With a Single Supply
10
Application and Implementation
10.1
Application Information
10.1.1
Stability, Noise Gain, and Signal Gain
10.1.2
Input and Output Headroom Considerations
10.1.3
Noise Analysis
10.1.4
Noise Figure
10.1.5
Thermal Considerations
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Driving Matched Loads
10.2.2.2
Driving Unmatched Loads For Lower Loss
10.2.2.3
Driving Capacitive Loads
10.2.2.4
Driving ADCs
10.2.2.4.1
SNR Considerations
10.2.2.4.2
SFDR Considerations
10.2.2.4.3
ADC Input Common-Mode Voltage Considerations—AC-Coupled Input
10.2.2.4.4
ADC Input Common-Mode Voltage Considerations—DC-Coupled Input
10.2.2.5
GSPS ADC Driver
10.2.2.6
Common-Mode Voltage Correction
10.2.2.7
Active Balun
10.2.3
Application Curves
10.3
Do's and Don'ts
10.3.1
Do:
10.3.2
Don't:
11
Power Supply Recommendations
11.1
Supply Voltage
11.2
Single Supply
11.3
Split Supply
11.4
Supply Decoupling
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
Device Nomenclature
13.2
Documentation Support
13.2.1
Related Documentation
13.3
Receiving Notification of Documentation Updates
13.4
Community Resources
13.5
Trademarks
13.6
Electrostatic Discharge Caution
13.7
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
FFK|14
MCCC005A
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbos849b_oa
sbos849b_pm
10.3.2
Don't:
Use a lower supply voltage than necessary.
Use thin metal traces to supply power.
Forget about the common-mode response of filters and transmission lines.