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High-speed op amps (GBW ≥ 50 MHz)

THS4271

ACTIVE

Super-Fast Ultra-Low Distortion High Speed Amplifier

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Data sheet

THS4271

ACTIVE
Data sheet Order now

Product details

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 10 GBW (typ) (MHz) 400 BW at Acl (MHz) 1400 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1000 Vn at flatband (typ) (nV√Hz) 3 Vn at 1 kHz (typ) (nV√Hz) 3 Iq per channel (typ) (mA) 22 Vos (offset voltage at 25°C) (max) (mV) 10 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 72 Input bias current (max) (pA) 15000000 Offset drift (typ) (µV/°C) 10 Iout (typ) (mA) 160 2nd harmonic (dBc) 65 3rd harmonic (dBc) 80 Frequency of harmonic distortion measurement (MHz) 30
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 10 GBW (typ) (MHz) 400 BW at Acl (MHz) 1400 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 1000 Vn at flatband (typ) (nV√Hz) 3 Vn at 1 kHz (typ) (nV√Hz) 3 Iq per channel (typ) (mA) 22 Vos (offset voltage at 25°C) (max) (mV) 10 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 72 Input bias current (max) (pA) 15000000 Offset drift (typ) (µV/°C) 10 Iout (typ) (mA) 160 2nd harmonic (dBc) 65 3rd harmonic (dBc) 80 Frequency of harmonic distortion measurement (MHz) 30
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOIC (D) 8 29.4 mm² 4.9 x 6 VSON (DRB) 8 9 mm² 3 x 3 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Unity Gain Stability
  • Low Voltage Noise
    • 3 nV/√Hz
  • High Slew Rate: 1000 V/µs
  • Low Distortion
    • –92 dBc THD at 30 MHz
  • Wide Bandwidth: 1.4 GHz
  • Supply Voltages
    • +5 V, ±5 V
  • Power Down Functionality (THS4275)
  • Evaluation Module Available
  • APPLICATIONS
    • High Linearity ADC Preamplifier
    • Wireless Communication Receivers
    • Differential to Single-Ended Conversion
    • DAC Output Buffer
    • Active Filtering

All trademarks are the property of their respective owners.
  • Unity Gain Stability
  • Low Voltage Noise
    • 3 nV/√Hz
  • High Slew Rate: 1000 V/µs
  • Low Distortion
    • –92 dBc THD at 30 MHz
  • Wide Bandwidth: 1.4 GHz
  • Supply Voltages
    • +5 V, ±5 V
  • Power Down Functionality (THS4275)
  • Evaluation Module Available
  • APPLICATIONS
    • High Linearity ADC Preamplifier
    • Wireless Communication Receivers
    • Differential to Single-Ended Conversion
    • DAC Output Buffer
    • Active Filtering

All trademarks are the property of their respective owners.

The THS4271 and THS4275 are low-noise, high slew rate, unity gain stable voltage-feedback amplifiers designed to run from supply voltages as low as 5 V and as high as ±5 V. The THS4275 offers the same performance as the THS4271 with the addition of a power-down capability. The combination of low-noise, high slew rate, wide bandwidth, low distortion, and unity gain stability make the THS4271 and THS4275 high performance devices across multiple ac specifications.

Designers using the THS4271 are rewarded with higher dynamic range over a wider frequency band without the stability concerns of decompensated amplifiers. The devices are available in SOIC, MSOP with PowerPAD, and leadless MSOP with PowerPAD™ packages.

The THS4271 and THS4275 may have low-level oscillation when the die temperature (also known as the junction temperature) exceeds +60°C.

The THS4271 and THS4275 are low-noise, high slew rate, unity gain stable voltage-feedback amplifiers designed to run from supply voltages as low as 5 V and as high as ±5 V. The THS4275 offers the same performance as the THS4271 with the addition of a power-down capability. The combination of low-noise, high slew rate, wide bandwidth, low distortion, and unity gain stability make the THS4271 and THS4275 high performance devices across multiple ac specifications.

Designers using the THS4271 are rewarded with higher dynamic range over a wider frequency band without the stability concerns of decompensated amplifiers. The devices are available in SOIC, MSOP with PowerPAD, and leadless MSOP with PowerPAD™ packages.

The THS4271 and THS4275 may have low-level oscillation when the die temperature (also known as the junction temperature) exceeds +60°C.

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Technical documentation

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Type Title Date
* Data sheet Low Noise, High Slew Rate, Unity Gain Stable Voltage Feedback Amplifier datasheet (Rev. F) 16 Oct 2009
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) 08 May 2015
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
EVM User's guide THS4271EVM-UG Unity Gain 25 Sep 2002
EVM User's guide THS4271EVM, THS4275EVM 17 Sep 2002

Design & development

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

Evaluation board

THS4271EVM — THS4271 Evaluation Module

The THS4271EVM and THS4275EVM are designed to demonstrate the functionality and versatility of the device. There are three versions of the EVM: gains ≥+2/-1 with shutdown (THS4275EVM), gains ≥+2/-1 without shutdown (THS4271EVM), and noninverting unity gain configuration w/o shutdown (...)

User guide: PDF
Not available on TI.com
Evaluation board

THS4271EVM-UG — THS4271 Evaluation Module with Unity Gain

The THS4271EVM and THS4275EVM are designed to demonstrate the functionality and versatility of the device. There are three versions of the EVM: gains ≥+2/-1 with shutdown (THS4275EVM), gains ≥+2/-1 without shutdown (THS4271EVM), and noninverting unity gain configuration w/o shutdown (...)

User guide: PDF
Not available on TI.com
Simulation model

THS4271 PSpice Model (Rev. A)

SLOJ151A.ZIP (39 KB) - PSpice Model
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Simulation model

THS4271 TINA-TI Reference Design (Rev. B)

SBOC284B.TSC (116 KB) - TINA-TI Reference Design
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Simulation model

THS4271 TINA-TI Spice Model (Rev. A)

SBOM361A.ZIP (5 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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Package Pins CAD symbols, footprints & 3D models
HVSSOP (DGN) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSON (DRB) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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