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OPA171

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1-Channel, 3-MHz, 36V, low power, RRO, general purpose op amp in MicroPackages

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1-Channel, 3-MHz, 36V, low power, RRO, general purpose op amp in MicroPackages

OPA171

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Product details

Parameters

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Rail-to-rail In to V-, Out GBW (Typ) (MHz) 3 Slew rate (Typ) (V/us) 1.5 Vos (offset voltage @ 25 C) (Max) (mV) 1.8 Iq per channel (Typ) (mA) 0.475 Vn at 1 kHz (Typ) (nV/rtHz) 14 Rating Catalog Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.3 Features EMI Hardened, Small Size Input bias current (Max) (pA) 15 CMRR (Typ) (dB) 120 Output current (Typ) (mA) 25 Architecture CMOS open-in-new Find other General-purpose op amps

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-5X3 (DRL) 5 3 mm² 1.6 x 1.6 open-in-new Find other General-purpose op amps

Features

  • Supply range: 2.7 to 36 V, ±1.35 V to ±18 V
  • Low noise: 14 nV/√Hz
  • Low offset drift: ±0.3 µV/°C (typical)
  • RFI filtered inputs
  • Input range includes the negative supply
  • Input range operates to positive supply
  • Rail-to-rail output
  • Gain bandwidth: 3 MHz
  • Low quiescent current: 475 µA per amplifier
  • High common-mode rejection: 120 dB (typical)
  • Low-input bias current: 8 pA
  • Industry-standard packages:
    • 8-pin SOIC
    • 8-pin MSOP
    • 14-pin TSSOP
  • Micro packages:
    • Single in SOT-553
    • Dual in VSSOP-8

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Description

The OPA171, OPA2171, and OPA4171 (OPAx171) are a family of 36-V, single-supply, low-noise operational amplifiers with the ability to operate on supplies ranging from 2.7 V (±1.35 V) to 36 V (±18 V). These devices are available in micro-packages and offer low offset, drift, and bandwidth with low quiescent current. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most operational amplifiers, which are specified at only one supply voltage, the OPAx171 family is specified from 2.7 to 36 V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171 family is stable with capacitive loads up to 300 pF. The input can operate 100 mV below the negative rail and within 2 V of the top rail during normal operation. These devices can operate with full rail-to-rail input 100 mV beyond the top rail, but with reduced performance within 2 V of the top rail.

The OPAx171 series of operational amplifiers are specified from –40°C to +125°C.

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Technical documentation

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Type Title Date
* Datasheet OPAx171 36-V, Single-Supply, SOT-553, General-Purpose Operational Amplifiers datasheet (Rev. G) May 22, 2020
Technical articles What is an op amp? Jan. 21, 2020
Application notes Using An Op Amp for High-Side Current Sensing Mar. 22, 2019
Application notes Non-inverting amplifier circuit (Rev. A) Jan. 31, 2019
Technical articles Designing tiny microphone circuits with the industry’s smallest op amp Apr. 12, 2018
Technical articles How to lay out a PCB for high-performance, low-side current-sensing designs Feb. 06, 2018
Technical articles Low-side current sensing for high-performance cost-sensitive applications Jan. 22, 2018
More literature The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application notes OPA171 EMI Immunity Performance Mar. 29, 2016
More literature Precision Amplifier Quickstart Kit brochure (Rev. A) Jan. 13, 2015
Application notes Compensate Transimpedance Amplifiers Intuitively (Rev. A) Mar. 30, 2005

Design & development

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Hardware development

EVALUATION BOARDS Download
document-generic User guide
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Description

The TI Precision Amplifier Quickstart Kit simplifies op amp selection, design, and evaluation with samples of six op amps and an evaluation module for prototyping surface-mount ICs. The kit is the perfect starting point for your amplifier designs.

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Features

The kit includes:

  • Six samples: Three low-power, low-voltage amplifiers and three low-power, wide-supply amplifiers. See the table below for the complete list.
  • DIP Adapter Evaluation Module (DIP-ADAPTER-EVM) for prototyping surface-mount ICs. The EVM supports the following package types: D or U (...)
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EVALUATION BOARDS Download
document-generic User guide
Description

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

Features
  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost
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EVALUATION BOARDS Download
document-generic User guide
Description
The DIYAMP-EVM is a unique evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT23, SOIC) and 12 (...)
Features
  • 3 packages to choose from: SC70-5, SOT23-5 and SOIC-8
  • 12 circuit configurations to choose from: Noninverting, Inverting, Active Filters, Difference Amp, Comparator and more!
  • Dual and single supply configurations
  • PCB designed for High performance: Optimized for each function
  • Multiple interface options (...)
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EVALUATION BOARDS Download
document-generic User guide
Description

The Universal OPAMPEVM is a series of general purpose blank circuit boards that simplify prototyping circuits for a variety of IC package types. The evaluation module board design allows many different circuits to be constructed easily and quickly. Five models are offered with each targeted for (...)

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Design tools & simulation

SIMULATION MODELS Download
SBOM440B.ZIP (14 KB) - PSpice Model
SIMULATION MODELS Download
SBOM441B.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM442C.TSC (357 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI — 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 (...)
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CALCULATION TOOLS Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
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DESIGN TOOLS Download
SBOC493.ZIP (10 KB)

Reference designs

REFERENCE DESIGNS Download
Wi-Fi Enabled Level 1 and Level 2 Electric Vehicle Service Equipment Reference Design
TIDC-EVSE-WIFI — The TIDC-EVSE-WIFI verified TI Design details how to implement J1772-compliant level 1 and level 2 electric vehicle service equipment (EVSE) with added Wi-Fi® functionality. The CC3100 network processor enables highly embedded devices like the EVSE to easily connect to an existing wireless (...)
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REFERENCE DESIGNS Download
Level 1&2 Electric Vehicle Service Equipment Reference Design
TIDA-00637 — This verified TI Design provides the foundation that you need to implement a J1772 compliant Level 1 & 2 electric vehicle service equipment. It showcases safe failure modes using TI’s peripheral drivers along with integrated fault checking. It has a configurable power delivery control and (...)
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NFC Authentication for an EV Charging Station (Pile) Reference Design
TIDC-EVSE-NFC — The TIDC-EVSE-NFC reference design showcases a straightforward integration of TI’s NFC technology with an existing EVSE platform to enable user authentication. The NFC standard comprises many different sub-technologies and working groups, making integration into a specific system (...)
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REFERENCE DESIGNS Download
Design files
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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 5 View options
SOT-5X3 (DRL) 5 View options

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Videos

Boost Your Analog Expertise with TI Precision Labs

Get the backstory on why we created TI Precision Labs, the industry's first online classroom for analog design, from op amp expert Art Kay.

Posted: 27-Jan-2015
Duration: 01:48

Tour the TI Precision Labs online classroom

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