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OPA172

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Single, 36-V, 10-MHz, low-power operational amplifier

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OPA992 ACTIVE Single, 40-V, 10.6-MHz, rail-to-rail input/output, low-offset-voltage, low-noise op amp Rail-to-rail I/O, wider supply range (2.7 V to 40 V), higher GBW (10.6 MHz), faster slew rate (32 V/us)

OPA172

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Rail-to-rail In to V-, Out GBW (typ) (MHz) 10 Slew rate (typ) (V/µs) 10 Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 1.6 Vn at 1 kHz (typ) (nV√Hz) 7 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.3 Features EMI Hardened Input bias current (max) (pA) 15 CMRR (typ) (dB) 120 Iout (typ) (A) 0.075 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.01
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Rail-to-rail In to V-, Out GBW (typ) (MHz) 10 Slew rate (typ) (V/µs) 10 Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 1.6 Vn at 1 kHz (typ) (nV√Hz) 7 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.3 Features EMI Hardened Input bias current (max) (pA) 15 CMRR (typ) (dB) 120 Iout (typ) (A) 0.075 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 0.01 Output swing headroom (to positive supply) (typ) (V) -0.01
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • Wide Supply Range:
    +4.5 V to +36 V, ±2.25 V to ±18 V
  • Low Offset Voltage: ±0.2 mV
  • Low Offset Drift: ±0.3 µV/°C
  • Gain Bandwidth: 10 MHz
  • Low Input Bias Current: ±8 pA
  • Low Quiescent Current: 1.6 mA per Amplifier
  • Low Noise: 7 nV/√Hz
  • EMI and RFI Filtered Inputs
  • Input Range Includes the Negative Supply
  • Input Range Operates to Positive Supply
  • Rail-to-Rail Output
  • High Common-Mode Rejection: 120 dB
  • Industry-Standard Packages:
    • SOIC-8, VSSOP-8, SOIC-14, TSSOP-14
  • microPackages: Single in SC70, SOT-23,
    Dual in WSON-8
  • Wide Supply Range:
    +4.5 V to +36 V, ±2.25 V to ±18 V
  • Low Offset Voltage: ±0.2 mV
  • Low Offset Drift: ±0.3 µV/°C
  • Gain Bandwidth: 10 MHz
  • Low Input Bias Current: ±8 pA
  • Low Quiescent Current: 1.6 mA per Amplifier
  • Low Noise: 7 nV/√Hz
  • EMI and RFI Filtered Inputs
  • Input Range Includes the Negative Supply
  • Input Range Operates to Positive Supply
  • Rail-to-Rail Output
  • High Common-Mode Rejection: 120 dB
  • Industry-Standard Packages:
    • SOIC-8, VSSOP-8, SOIC-14, TSSOP-14
  • microPackages: Single in SC70, SOT-23,
    Dual in WSON-8

The OPA172, OPA2172 and OPA4172 (OPAx172) are a family of 36-V, single-supply, low-noise operational amplifiers capable of operating on supplies ranging from +4.5 V (±2.25 V) to +36 V
(±18 V). This latest addition of high-voltage CMOS operational amplifiers, in conjunction with the OPAx171 and OPAx170, provide a family of bandwidth, noise, and power options to meet the needs of a wide variety of applications. The OPAx172 are available in micropackages, and offer low offset, drift, and quiescent current. These devices also offer wide bandwidth, fast slew rate, and high output current drive capability. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most op amps, which are specified at only one supply voltage, the OPAx172 family is specified from +4.5 V to +36 V. Input signals beyond the supply rails do not cause phase reversal. The input can operate 100 mV below the negative rail and within 2 V of the top rail during normal operation. Note that 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 OPAx172 series of op amps are specified from –40°C to +125°C.

The OPA172, OPA2172 and OPA4172 (OPAx172) are a family of 36-V, single-supply, low-noise operational amplifiers capable of operating on supplies ranging from +4.5 V (±2.25 V) to +36 V
(±18 V). This latest addition of high-voltage CMOS operational amplifiers, in conjunction with the OPAx171 and OPAx170, provide a family of bandwidth, noise, and power options to meet the needs of a wide variety of applications. The OPAx172 are available in micropackages, and offer low offset, drift, and quiescent current. These devices also offer wide bandwidth, fast slew rate, and high output current drive capability. The single, dual, and quad versions all have identical specifications for maximum design flexibility.

Unlike most op amps, which are specified at only one supply voltage, the OPAx172 family is specified from +4.5 V to +36 V. Input signals beyond the supply rails do not cause phase reversal. The input can operate 100 mV below the negative rail and within 2 V of the top rail during normal operation. Note that 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 OPAx172 series of op amps are specified from –40°C to +125°C.
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Technical documentation

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* Data sheet OPAx172 36-V, Single-Supply, 10-MHz, Rail-to-Rail Output Operational Amplifiers datasheet (Rev. I) PDF | HTML 15 May 2018
Circuit design AC-Coupled Transimpedance Amplifier Circuit (Rev. A) PDF | HTML 27 Jan 2025
Circuit design Band pass filtered inverting attenuator circuit (Rev. B) PDF | HTML 16 Oct 2024
Circuit design Adjustable reference voltage circuit (Rev. A) PDF | HTML 09 Oct 2024
Circuit design TIA microphone amplifier circuit (Rev. A) PDF | HTML 26 Sep 2024
Circuit design Two op amp instrumentation amplifier circuit (Rev. A) PDF | HTML 26 Sep 2024
Circuit design Three Op Amp Instrumentation Amplifier Circuit (Rev. A) PDF | HTML 30 Mar 2022
E-book An Engineer’s Guide to Designing with Precision Amplifiers 29 Apr 2021
Application note AN-31 Amplifier Circuit Collection (Rev. D) 21 Oct 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
More literature Precision Amplifier Quickstart Kit brochure (Rev. A) 13 Jan 2015
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML 30 Sep 2014
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005

Design & development

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Evaluation board

AMP-PDK-EVM — Amplifier performance development kit evaluation module

The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

User guide: PDF | HTML
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Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP adapter evaluation module (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 (...)

User guide: PDF
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Evaluation board

DIYAMP-EVM — Universal do-it-yourself (DIY) amplifier circuit evaluation module

The DIYAMP-EVM is an 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, SOT-23 and SOIC) (...)

User guide: PDF | HTML
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Support software

TINA-TI Reference Design Companion for Voltage-to-Current Converter Circuit BJT

SBOMB58.TSC (245 KB)
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Simulation model

OPA172 PSpice Model (Rev. C)

SBOM854C.ZIP (22 KB) - PSpice Model
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Simulation model

OPA172 TINA-TI Reference Design (Rev. A)

SBOM856A.ZIP (26 KB) - TINA-TI Reference Design
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Simulation model

OPA172 TINA-TI Spice Model (Rev. A)

SBOM855A.ZIP (4 KB) - TINA-TI Spice Model
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Simulation model

Simulation for AC-Coupled Transimpedance Amplifier Circuit

SBOMCI1.ZIP (95 KB) - TINA-TI Reference Design
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Simulation model

TINA-TI Reference Design Companion for TIA Microphone Amplifier Circuit

SBOMAV2.ZIP (550 KB) - TINA-TI Reference Design
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Calculation tool

ANALOG-ENGINEER-CALC — PC software 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 (...)

Supported products & hardware

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Design tool

CIRCUIT060013 — Inverting amplifier with T-network feedback circuit

This design inverts the input signal, VIN, and applies a signal gain of 1000 V/V or 60 dB. The inverting amplifier with T-feedback network can be used to obtain a high gain without a small value for R4 or very large values for the feedback resistors.
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Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
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Design tool

CIRCUIT060025 — Two op amp instrumentation amplifier circuit

This design amplifiers the difference between Vi1 and Vi2 and outputs a single ended signal while rejecting the common–mode voltage. Linear operation of an instrumentation amplifier depends upon the linear operation of its primary building block: op amps. An op amp operates linearly when the input (...)
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Design tool

CIRCUIT060026 — Three op amp instrumentation amplifier circuit

This design uses three op amps to build a discrete instrumentation amplifier. The circuit converts a differential signal to a single-ended output signal. Linear operation of an instrumentation amplifier depends upon linear operation of its building block: op amps. An op amp operates linearly when (...)
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Design tool

CIRCUIT060041 — AC-coupled transimpedance amplifier circuit

This circuit uses an op amp configured as a transimpedance amplifier to amplify the AC signal of a photodiode (modeled by Ii and C3). The circuit rejects DC signals using a transistor to sink DC current out of the photodiode through the use of an integrator in a servo loop. The bias voltage (...)
User guide: PDF
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Design tool

CIRCUIT060050 — Band pass filtered inverting attenuator circuit

This tunable band-pass attenuator reduces signal level by –40 dB over the frequency range from 10 Hz to 100 kHz. It also allows for independent control of the DC output level. For this design, the pole frequencies were selected outside the pass band to minimize attenuation within the specified (...)
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Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
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Design tool

CIRCUIT060088 — Transimpedance amplifier (TIA) microphone amplifier circuit

This circuit uses an op amp in a transimpedance amplifier configuration to convert the output current from an electret capsule microphone into an output voltage. The common mode voltage of this circuit is constant and set to mid–supply eliminating any input–stage cross over distortion.
User guide: PDF
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Design tool

SBOC503 — Simulation for Band Pass Filtered Inverting Attenuator Circuit

Supported products & hardware

Supported products & hardware
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Design tool

SBOC560 — Simulation for Voltage-to-Current Converter with BJT Output in AN-31

Supported products & hardware

Supported products & hardware
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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 (...)
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Reference designs

TIPD181 — Single-Supply, Electret Microphone Preamplifier Reference Design

This TI Precision design details the design process for a preamplifier to be used with electret microphone capsules. It explains the basic construction and operation of an electret microphone and uses an OPA172 to amplify the output of the microphone to common analog line level voltages.
User guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
SOT-SC70 (DCK) 5 Ultra Librarian
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