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High-speed op amps (GBW ≥ 50 MHz)

THS3120

ACTIVE

Single, Low Noise, High Output Drive, 475mA Current-Feedback Amplifier with Power-down

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Data sheet

THS3120

ACTIVE
Data sheet Order now

Product details

Architecture Current FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 GBW (typ) (MHz) 130 BW at Acl (MHz) 130 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1500 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 2.5 Iq per channel (typ) (mA) 3.5 Vos (offset voltage at 25°C) (max) (mV) 10 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 70 Input bias current (max) (pA) 4000000 Offset drift (typ) (µV/°C) 10 Iout (typ) (mA) 475 2nd harmonic (dBc) 51 3rd harmonic (dBc) 50 Frequency of harmonic distortion measurement (MHz) 10
Architecture Current FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 GBW (typ) (MHz) 130 BW at Acl (MHz) 130 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1500 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 2.5 Iq per channel (typ) (mA) 3.5 Vos (offset voltage at 25°C) (max) (mV) 10 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 70 Input bias current (max) (pA) 4000000 Offset drift (typ) (µV/°C) 10 Iout (typ) (mA) 475 2nd harmonic (dBc) 51 3rd harmonic (dBc) 50 Frequency of harmonic distortion measurement (MHz) 10
HVSSOP (DGN) 8 14.7 mm² (3 mm × 4.9 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Low Noise:
    • 1 pA/√Hz Noninverting Current Noise
    • 10 pA/√Hz Inverting Current Noise
    • 2.5 nV/√Hz Voltage Noise
  • High Output Current Drive: 475 mA
  • High Slew Rate:
    • 1700 V/µs (RL = 50 , VO = 8 VPP)
  • Wide Bandwidth: 120 MHz (G = 2, RL = 50 )
  • Wide Supply Range: ±5 V to ±15 V
  • Power-Down Feature: (THS3120 Only)
  • APPLICATIONS
    • Video Distribution
    • Power FET Driver
    • Pin Driver
    • Capacitive Load Driver

All trademarks are the property of their respective owners.
  • Low Noise:
    • 1 pA/√Hz Noninverting Current Noise
    • 10 pA/√Hz Inverting Current Noise
    • 2.5 nV/√Hz Voltage Noise
  • High Output Current Drive: 475 mA
  • High Slew Rate:
    • 1700 V/µs (RL = 50 , VO = 8 VPP)
  • Wide Bandwidth: 120 MHz (G = 2, RL = 50 )
  • Wide Supply Range: ±5 V to ±15 V
  • Power-Down Feature: (THS3120 Only)
  • APPLICATIONS
    • Video Distribution
    • Power FET Driver
    • Pin Driver
    • Capacitive Load Driver

All trademarks are the property of their respective owners.

The THS3120 and THS3121 are low-noise, high-voltage, high output current drive, current-feedback amplifiers designed to operate over a wide supply range of ±5 V to ±15 V for today's high-performance applications.

The THS3120 offers a power saving mode by providing a power-down pin for reducing the 7-mA quiescent current of the device, when the device is not active.

These amplifiers provide well-regulated ac performance characteristics. Most notably, the 0.1-dB flat bandwidth is exceedingly high, reaching beyond 90 MHz. The unity-gain bandwidth of 130 MHz allows for good distortion characteristics at 10 MHz. Coupled with high 1700-V/µs slew rate, the THS3120 and THS3121 amplifiers allow for high output voltage swings at high frequencies.

The THS3120 and THS3121 are offered in an SOIC-8 (D) package and an MSOP-8 (DGN) PowerPAD package.

The THS3120 and THS3121 are low-noise, high-voltage, high output current drive, current-feedback amplifiers designed to operate over a wide supply range of ±5 V to ±15 V for today's high-performance applications.

The THS3120 offers a power saving mode by providing a power-down pin for reducing the 7-mA quiescent current of the device, when the device is not active.

These amplifiers provide well-regulated ac performance characteristics. Most notably, the 0.1-dB flat bandwidth is exceedingly high, reaching beyond 90 MHz. The unity-gain bandwidth of 130 MHz allows for good distortion characteristics at 10 MHz. Coupled with high 1700-V/µs slew rate, the THS3120 and THS3121 amplifiers allow for high output voltage swings at high frequencies.

The THS3120 and THS3121 are offered in an SOIC-8 (D) package and an MSOP-8 (DGN) PowerPAD package.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet Low-Noise, High-Output Drive, Current Feedback Operational Amplifiers datasheet (Rev. E) Oct 12, 2009
Technical article 3 common questions when designing with high-speed amplifiers PDF | HTML Jul 17, 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
Analog design Journal Expanding the usability of current-feedback amplifiers Feb 28, 2005
Analog design Journal Active filters using current-feedback amplifiers Feb 25, 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

THS3120EVM — THS3120 Evaluation Module

The THS3120 EVM User's Guide is included within the Datasheet.

The THS3120 EVM is a turnkey module that allows you to evaluate the low-noise, high-voltage, high output current drive, current-feedback amplifier designed to operate over a wide supply range for high performance applications.  The (...)

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Simulation model

THS3120 PSpice Model (Rev. A)

SLOM137A.ZIP (38 KB) - PSpice model
Supported products & hardware
Simulation model

THS3120 TINA-TI Reference Design

SLOM138.TSC (1207 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

THS3120 TINA-TI Spice Model

SLOM139.ZIP (4 KB) - TINA-TI Spice model
Supported products & hardware
Reference design

PMP20967 — Adjustable dual-level constant-current load reference design for transient testing

This adjustable dual-level constant-current load reference design helps engineers test a power supply output load transient response with special features and easy operation. The board provides load transient adjustments for low and high level with slew rates as high as 100 A/µs. Timing (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
HVSSOP (DGN) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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