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Texas Instruments THS309x Current-Feedback Op Amps

Texas Instruments THS309x Current-Feedback Operational Amplifiers (Op Amps) are high-voltage, low-distortion, high-speed, current-feedback amplifiers that operate over a wide supply range of ±5V to ±16V. These devices are an excellent choice for applications that require large, linear output signals, such as pin drivers, power-FET drivers, and arbitrary waveform generators. The THS3095 features a power-down pin (PD) that puts the amplifier into a low-power standby mode and lowers the quiescent current from 9.5mA to 500µA.

The wide 32V supply range, 6000V/µs slew rate, and 310mA output current drive make the THS309x an excellent choice for high-voltage arbitrary-waveform-driver applications. Moreover, with the ability to handle large voltage swings driving into low-resistance and high-capacitance loads while maintaining good settling time performance, these devices are an excellent choice for pin-driver and power-FET driver applications. The Texas Instruments THS309x are offered in an 8-pin SOIC (DDA) PowerPAD™ integrated circuit package. The THS3091 is also provided in an 8-pin HVSSOP (DGN) package.

Features

  • Low distortion
    • 84dBc HD2 at 10MHz, R L = 1kΩ
    • 99dBc HD3 at 10MHz, R L = 1kΩ
  • Low noise
    • 15pA/√Hz noninverting current noise
    • 14pA/√Hz inverting current noise
    • 1.1nV/√Hz voltage noise
  • 6000V/µs (G = 5, VO = 20VPP) high slew rate
  • 305MHz (G = 2, RL = 100Ω) wide bandwidth
  • ±310mA high output current drive
  • ±5V to ±16V wide supply range
  • Power-down feature (THS3095 only)

Applications

  • High-voltage arbitrary waveform generators
  • Pin Driver
  • Power-FET drivers
  • Source measurement unit (SMU)
  • High capacitive load piezo element drivers

Functional Block Diagram

Block Diagram - Texas Instruments THS309x Current-Feedback Op Amps
Published: 2023-06-05 | Updated: 2023-11-09