SLOS382E September   2001  – May 2015 THS3122 , THS3125

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Options
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  Dissipation Ratings Table
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Electrical Characteristics: Dynamic Performance
    5. 7.5  Electrical Characteristics: Noise and Distortion Performance
    6. 7.6  Electrical Characteristics: DC Performance
    7. 7.7  Electrical Characteristics: Input Characteristics
    8. 7.8  Electrical Characteristics: Output Characteristics
    9. 7.9  Electrical Characteristics: Power Supply
    10. 7.10 Electrical Characteristics: Shutdown Characteristics (THS3125 Only)
    11. 7.11 Typical Characteristics: Table Of Graphs
    12. 7.12 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Feature Description
      1. 8.2.1 Maximum Slew Rate For Repetitive Signals
      2. 8.2.2 Saving Power with Shutdown Functionality and Setting Threshold Levels with the Reference Pin
      3. 8.2.3 Power-Down Reference Pin Operation
    3. 8.3 Device Functional Modes
      1. 8.3.1 Wideband, Noninverting Operation
      2. 8.3.2 Wideband, Inverting Operation
      3. 8.3.3 Single-Supply Operation
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Video Distribution
      2. 9.1.2 Driving Capacitive Loads
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Printed-Circuit Board Layout Techniques For Optimal Performance
      2. 10.1.2 PowerPAD Design Considerations
      3. 10.1.3 PowerPAD Layout Considerations
      4. 10.1.4 Power Dissipation And Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Low Noise:
    • 2.9-pA/√Hz Noninverting Current Noise
    • 10.8-pA/√Hz Inverting Current Noise
    • 2.2-nV/√Hz Voltage Noise
    • 128-MHz , –3-dB BW (RL = 50 Ω, RF = 470 Ω)
    • 1550-V/µs Slew Rate (G = 2, RL= 50Ω )
  • High Output Current: 450 mA
  • High Speed:
    • 128-MHz , –3-dB BW (RL = 50 Ω, RF = 470 Ω)
    • 1550-V/µs Slew Rate (G = 2, RL= 50Ω )
    • 26-VPP Output Voltage, RL= 50 Ω
    • –80 dBc (1 MHz, 2 VPP, G = 2)
  • Wide Output Swing:
    • 26-VPP Output Voltage, RL= 50 Ω
    • –80 dBc (1 MHz, 2 VPP, G = 2)
    • 370-µA Shutdown Supply Current
  • Low Distortion:
    • –80 dBc (1 MHz, 2 VPP, G = 2)
    • 370-µA Shutdown Supply Current
  • Low-Power Shutdown Mode (THS3125)
    • 370-µA Shutdown Supply Current
  • Standard SOIC, HSOP PowerPAD™, and HTSSOP PowerPAD Packages

2 Applications

  • Video Distribution
  • Instrumentation
  • Line Drivers
  • Motor Drivers
  • Piezo Drivers

3 Description

The THS3122 and THS3125 are low-noise, high-speed current feedback amplifiers, with high output current drive. This makes them ideal for any application that requires low distortion over a wide frequency with heavy loads. The THS3122 and THS3125 can drive four serially-terminated video lines while maintaining a differential gain error less than 0.03%.

The high output drive capability of the THS3122 and THS3125 enables the devices to drive 50-Ω loads with low distortion over a wide range of output voltages:

  • –80-dBc THD at 2 VPP
  • –75-dBc THD at 8 VPP

The THS3122 and THS3125 operate from ±5-V to ±15-V supply voltages while drawing as little as 7.2 mA of supply current per channel. The THS3125 offers a low-power shutdown mode, reducing the supply current to only 370 µA. The THS3122 and THS3125 are packaged in SOIC, HSOP, and HTSSOP packages.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
THS3122 SOIC (8) 4.90 mm × 3.91 mm
HSOP (8) 4.89 mm × 3.90 mm
THS3125 SOIC (14) 8.65 mm × 3.91 mm
HTSSOP (14) 5.00 mm × 4.40 mm
  1. For all available packages, see the package option addendum at the end of the data sheet.
THS3122 THS3125 front_page_los382.gif

4 Revision History

Changes from D Revision (February 2011) to E Revision

  • Added missing minus sign to temperature range in Available Options table Go
  • Changed Input Offset parameter maximum values in Electrical Charateristics for DC PerformanceGo
  • Added Detailed Description sectionGo
  • Added Application and Implementation sectionGo
  • Change Application Information sectionGo

Changes from C Revision (July 2010) to D Revision

  • Changed output current (absolute maximum) from 275 mA to 550 mAGo

Changes from B Revision (October, 2009) to C Revision