Datasheet BUF802 (Texas Instruments) - 5

BUF802 www.ti.com
SBOS998C – JUNE 2021 – REVISED MARCH 2022
6.5 Electrical Characteristics: Wide Bandwidth Mode
at TA = 25°C, VS = ±6V, RL = 100 Ω || 400 fF, RS = 25 Ω, VOCM = 0V (mid-supply), CLH and CLL tied to VS+ and VS– respectively, Wide Bandwidth Mode unless otherwise specified (R_Bias = 17.8 kΩ)
PARAMETER Test Condition MIN TYP MAX UNIT AC PERFORMANCE
SSBW Small-Signal Bandwidth VOUT = 100 mVPP 3.1 VOUT = 1 VPP 3.1 LSBW Large-Signal Bandwidth VOUT = 2 VPP 1.6 GHz Bandwidth for 0.1 dB flatness 0.6 Bandwidth for -1 dB flatness VOUT = 1 VPP 1.8 Bandwidth for -2 dB flatness RL = 50 Ω 2.4 SR Slew rate VOUT = 1.2-V step, VIN-SR = 13000 V/µs 7000 V/µs VOUT = 1.2-V step (10% to 90%) 0.16 Rise and fall time ns VOUT = 0.25-V step (10% to 90%) 0.15 Settling time to 0.1% 1.3 VOUT = 1.2-V step, VIN-SR = 13000 V/µs ns Settling time to 1% 0.7 1/f corner 18 kHz en Voltage noise f = 100 MHz in BF Mode and CL Mode 2.3 nV/√Hz in Current noise f = 10 kHz 1.5 pA/√Hz VOUT = 2 VPP f = 500 MHz –68/–58 f = 1 GHz –55/–59 HD2/HD3 Harmonic distortion dBc VOUT = 1 VPP f = 2 GHz –45/–49 f = 2 GHz, RL = 50 Ω –43/–41
DC PERFORMANCE
VOUT – VIN –600 –800 VOS Input offset voltage mV TA = –40℃ to 85℃ –900 dVOS/dT Input offset voltage drift TA = –40℃ to 85℃ ±700 ±1330 µV/℃ 3 25 IB Input bias current pA TA = –40℃ to 85℃ 220 44 140 IAB Auxiliary Input bias current µA TA = –40℃ to 85℃ 200 RL = 200 Ω 0.97 0.978 0.99 VOUT = ± 0.5 V RL = 100 Ω 0.96 0.971 0.98 RL = 50 Ω 0.95 0.961 0.97 G DC Gain V/V RL = 200 Ω 0.97 0.99 VOUT = ± 0.5 V ,TA = –40℃ R to 85℃ L = 100 Ω 0.96 0.98 RL = 50 Ω 0.94 0.97 Copyright © 2022 Texas Instruments Incorporated Submit Document Feedback 5 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