Product details

Architecture Current FB Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 10 Total supply voltage (Max) (+5V=5, +/-5V=10) 30 GBW (Typ) (MHz) 110 BW @ Acl (MHz) 110 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 1550 Vn at flatband (Typ) (nV/rtHz) 2.8 Vn at 1 kHz (Typ) (nV/rtHz) 2.2 Iq per channel (Typ) (mA) 4.9 Vos (offset voltage @ 25 C) (Max) (mV) 10 Rail-to-rail No Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 CMRR (Typ) (dB) 67 Input bias current (Max) (pA) 2000000 Offset drift (Typ) (uV/C) 10 Output current (Typ) (mA) 270 2nd harmonic (dBc) 78 3rd harmonic (dBc) 78 @ MHz 1
Architecture Current FB Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 10 Total supply voltage (Max) (+5V=5, +/-5V=10) 30 GBW (Typ) (MHz) 110 BW @ Acl (MHz) 110 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 1550 Vn at flatband (Typ) (nV/rtHz) 2.8 Vn at 1 kHz (Typ) (nV/rtHz) 2.2 Iq per channel (Typ) (mA) 4.9 Vos (offset voltage @ 25 C) (Max) (mV) 10 Rail-to-rail No Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 CMRR (Typ) (dB) 67 Input bias current (Max) (pA) 2000000 Offset drift (Typ) (uV/C) 10 Output current (Typ) (mA) 270 2nd harmonic (dBc) 78 3rd harmonic (dBc) 78 @ MHz 1
HSOIC (DDA) 8 19 mm² 3.90 x 4.90 SOIC (D) 8 19 mm² 3.91 x 4.9
  • Low Noise:
    • 2.9-pA/√Hz Noninverting Current Noise
    • 10.8-pA/√Hz Inverting Current Noise
    • 2.2-nV/√Hz Voltage Noise
  • Wide Supply Voltage Range: ±5 V to ± 15 V
  • Wide Output Swing:
    • 25-VPP Output Voltage, RL = 100 , ±15-V Supply
  • High Output Current: 150 mA (Min)
  • High Speed:
    • 110-MHz (–3-dB BW, G = 1, ±15 V)
    • 1550-V/µs Slew Rate (G = 2, ±15 V)
  • Low Distortion (G = 2):
    • –78 dBc (1 MHz, 2 VPP, 100- Load)
  • Low-Power Shutdown (THS3115)
    • 300-µA Shutdown Quiescent Current per Channel
  • Standard SOIC, SOIC PowerPAD™, and TSSOP PowerPAD Packages
  • Evaluation Module Available
  • APPLICATIONS
    • Communication Equipment
    • Video Distribution
    • Motor Drivers
    • Piezo Drivers

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.

  • Low Noise:
    • 2.9-pA/√Hz Noninverting Current Noise
    • 10.8-pA/√Hz Inverting Current Noise
    • 2.2-nV/√Hz Voltage Noise
  • Wide Supply Voltage Range: ±5 V to ± 15 V
  • Wide Output Swing:
    • 25-VPP Output Voltage, RL = 100 , ±15-V Supply
  • High Output Current: 150 mA (Min)
  • High Speed:
    • 110-MHz (–3-dB BW, G = 1, ±15 V)
    • 1550-V/µs Slew Rate (G = 2, ±15 V)
  • Low Distortion (G = 2):
    • –78 dBc (1 MHz, 2 VPP, 100- Load)
  • Low-Power Shutdown (THS3115)
    • 300-µA Shutdown Quiescent Current per Channel
  • Standard SOIC, SOIC PowerPAD™, and TSSOP PowerPAD Packages
  • Evaluation Module Available
  • APPLICATIONS
    • Communication Equipment
    • Video Distribution
    • Motor Drivers
    • Piezo Drivers

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.

The THS3112/5 are low-noise, high-speed current feedback amplifiers, ideal for any application requiring high output current. The low noninverting current noise of 2.9 pA/√Hz and the low inverting current noise of 10.8pA/√Hz increase signal-to-noise ratios for enhanced signal resolution. The THS3112/5 can operate from ±5-V to ±15-V supply voltages, while drawing as little as 4.5 mA of supply current per channel. It offers low –78-dBc total harmonic distortion driving 2 VPP into a 100- load. The THS3115 features a low-power shutdown mode, consuming only 300-µA shutdown quiescent current per channel. The THS3112/5 are packaged in standard SOIC, SOIC PowerPAD™, and TSSOP PowerPAD packages.

The THS3112/5 are low-noise, high-speed current feedback amplifiers, ideal for any application requiring high output current. The low noninverting current noise of 2.9 pA/√Hz and the low inverting current noise of 10.8pA/√Hz increase signal-to-noise ratios for enhanced signal resolution. The THS3112/5 can operate from ±5-V to ±15-V supply voltages, while drawing as little as 4.5 mA of supply current per channel. It offers low –78-dBc total harmonic distortion driving 2 VPP into a 100- load. The THS3115 features a low-power shutdown mode, consuming only 300-µA shutdown quiescent current per channel. The THS3112/5 are packaged in standard SOIC, SOIC PowerPAD™, and TSSOP PowerPAD packages.

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Technical documentation

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Type Title Date
* Data sheet Low-Noise, High-Speed Current Feedback Amplifiers datasheet (Rev. C) 16 Sep 2010
Technical article 3 common questions when designing with high-speed amplifiers 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
EVM User's guide THS3112/22 EVM User's Guide 17 Apr 2002

Design & development

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

Simulation model

THS3112 PSpice Model (Rev. A)

SLOM415A.ZIP (39 KB) - PSpice Model
Simulation model

THS3112 TINA-TI Reference Design

SLOM416.TSC (2325 KB) - TINA-TI Reference Design
Simulation model

THS3112 TINA-TI Spice Model

SLOM417.ZIP (6 KB) - TINA-TI Spice Model
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 (...)
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 (...)
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 op-amp gain with feedback (...)
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Calculation tool

VOLT-DIVIDER-CALC — Voltage Divider Determines A Set of Resistors for a Voltage Divider

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. This calculator can also be used to design non-inverting attentuation circuits.

(...)

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SO PowerPAD (DDA) 8 View options
SOIC (D) 8 View options

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Support & training

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