SBOS875B August   2017  – July 2018 THS3491

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Typical Arbitrary Waveform Generator Output Drive Circuit
      2.      Harmonic Distortion vs Frequency
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
    1.     Pin Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics: VS = ±15 V
    6. 7.6 Electrical Characteristics: VS = ±7.5 V
    7. 7.7 Typical Characteristics: ±15 V
    8. 7.8 Typical Characteristics: ±7.5 V
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power-Down (PD) Pin
      2. 8.3.2 Power-Down Reference (REF) Pin
      3. 8.3.3 Internal Junction Temperature Sense (TJ_SENSE) Pin
    4. 8.4 Device Functional Modes
      1. 8.4.1 Wideband Noninverting Operation
      2. 8.4.2 Wideband, Inverting Operation
      3. 8.4.3 Single-Supply Operation
      4. 8.4.4 Maximum Recommended Output Voltage
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Driving Capacitive Loads
      2. 9.1.2 Video Distribution
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PowerPAD™ Integrated Circuit Package Design Considerations (DDA Package Only)
        1. 11.1.1.1 PowerPAD™ Integrated Circuit Package Layout Considerations
        2. 11.1.1.2 Power Dissipation and Thermal Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Overview

The THS3491 is a high-voltage, low-distortion, high-speed, current-feedback amplifier designed to operate over a wide supply range of ±7 V to ±16 V for applications requiring large, linear output swings such as arbitrary waveform generators.

The THS3491 features a power-down pin that puts the amplifier in low power standby mode and lowers the quiescent current from 16.7 mA to 750 µA.

The RGT package also features a feedback pin (pin 1). Internally on the die this pin is connected to the amplifier's output. This feedback pin arrangement minimizes the PCB trace lengths in the feedback path for the connection from the feedback resistor to the inverting input and output pins. This in turn minimizes the board parasitics in the feedback path, thus allowing to maximize bandwidth with minimal peaking.