SBOS998D
June 2021 – July 2025
BUF802
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics Wide Bandwidth Mode
5.6
Electrical Characteristics Low Quiescent Current Mode
5.7
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Input and Output Overvoltage Clamp
7.3.2
Adjustable Quiescent Current
7.3.3
ESD Structure
7.4
Device Functional Modes
7.4.1
Buffer Mode (BF Mode)
7.4.2
Composite Loop Mode (CL Mode)
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Oscilloscope Front-End Amplifier Design
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
8.2.2
Transforming a Wide-Bandwidth, 50‑Ω Input Signal Chain to High-Input Impedance
8.2.2.1
Detailed Design Procedure
8.2.2.2
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
Data Sheet
BUF802
Wide-Bandwidth, 2.3nV/√Hz, High-Input Impedance Buffer