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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 x 4.9 SOIC (D) 8 29.4 mm² 4.9 x 6
  • 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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Type Title Date
* Data sheet Low-Noise, High-Output Drive, Current Feedback Operational Amplifiers datasheet (Rev. E) 12 Oct 2009
Technical article 3 common questions when designing with high-speed amplifiers PDF | HTML 17 Jul 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Analog Design Journal Expanding the usability of current-feedback amplifiers 28 Feb 2005
Analog Design Journal Active filters using current-feedback amplifiers 25 Feb 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 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
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Simulation model

THS3120 TINA-TI Reference Design

SLOM138.TSC (1207 KB) - TINA-TI Reference Design
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Simulation model

THS3120 TINA-TI Spice Model

SLOM139.ZIP (4 KB) - TINA-TI Spice Model
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Calculation tool

VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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Reference designs

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 (...)
Test report: PDF
Package Pins CAD symbols, footprints & 3D models
HVSSOP (DGN) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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