Datasheet BUF802 (Texas Instruments) - 10

BUF802
SBOS998C – JUNE 2021 – REVISED MARCH 2022
www.ti.com 6.7 Typical Characteristics (continued)
At TA = 25°C, VS = ±6 V, RL = 100 Ω || 400 fF, RS = 25 Ω, VOCM = 0 V (mid-supply), VOUT = 1 VPP, CLH and CLL tied to VS+ and VS- respectively, Wide Bandwidth Mode unless otherwise specified (R_Bias = 17.8 kΩ). -20 10 HD2, Wide Bandwidth Mode HD2, Wide Bandwidth Mode 0 -30 HD3, Wide Bandwidth Mode HD3, Wide Bandwidth Mode HD2, Low IQ Mode -10 HD2, Low IQ Mode c) HD3, Low I c) Q Mode HD3, Low IQ Mode dB -40 dB -20 n ( n ( -30 io io rt -50 rt -40 Disto Disto -50 c -60 c -60 -70 -70 Harmoni Harmoni -80 -80 -90 -90 -100 100M 1G 100M 1G Frequency (Hz) Frequency (Hz) V V OUT = 1 VPP OUT = 2 VPP
Figure 6-13. Harmonic Distortion vs Frequency Figure 6-14. Harmonic Distortion vs Frequency
-40 -35 HD2, V -45 -40 OCM = −0.5 V HD2, VOCM = +0.5 V HD3, VOCM = −0.5 V c) -50 ) -45 HD3, VOCM = +0.5 V dB -55 -50 n ( io rt -60 -55 ortion (dBc -65 -60 Disto c Dist -70 -65 -75 -70 Harmoni HD2, Wide Bandwidth Mode -80 Harmonic HD3, Wide Bandwidth Mode -75 -85 HD2, Low IQ Mode -80 HD3, Low IQ Mode -90 -85 4.5 V 5 V 5.5 V 6 V 100M 1G Supply (VS) Frequency (Hz) f = 500 MHz .
Figure 6-15. Harmonic Distortion vs Supply Voltage Figure 6-16. Harmonic Distortion vs Output Common Mode Voltage
-40 -40 HD2 HD2 -45 HD3 HD3 ) -45 -50 c) dB -55 n ( io -50 ortion (dBc rt -60 Dist Disto c -65 -55 Harmonic -70 Harmoni -60 -75 -80 -65 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 10 100 1k Output Voltage (VPP) RL () f = 1 GHz f = 1 GHz
Figure 6-17. Harmonic Distortion vs Output Voltage Figure 6-18. Harmonic Distortion vs Output Load
10 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: BUF802 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics: Wide Bandwidth Mode 6.6 Electrical Characteristics: Low Quiescent Current Mode 6.7 Typical Characteristics 7 Parameter Measurement Information 8 Detailed Description 8.1 Overview 8.2 Functional Block Diagram 8.3 Feature Description 8.3.1 Input and Output Over-Voltage Clamp 8.3.2 Adjustable Quiescent Current 8.3.3 ESD Structure 8.4 Device Functional Modes 8.4.1 Buffer Mode (BF Mode) 8.4.2 Composite Loop Mode (CL Mode) 9 Application and Implementation 9.1 Application Information 9.2 Typical Application 9.2.1 Oscilloscope Front-End Amplifier Design 9.2.1.1 Design Requirements 9.2.1.2 Detailed Design Procedure 9.2.1.3 Application Curves 9.2.2 Transforming a Wide-Bandwidth, 50 Ω Input Signal Chain to High-Input Impedance 9.2.2.1 Detailed Design Results 9.2.2.2 Application Curves 10 Power Supply Recommendations 11 Layout 11.1 Layout Guidelines 11.2 Layout Example 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation 12.2 Receiving Notification of Documentation Updates 12.3 Support Resources 12.4 Trademarks 12.5 Electrostatic Discharge Caution 12.6 Glossary 13 Mechanical, Packaging, and Orderable Information