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OPA991-Q1 ACTIVE Automotive-grade, single, 40-V, 4.5-MHz, low-power operational amplifier Rail-to-rail I/O, wider supply range (2.7 V to 40 V), higher GBW (4.5 MHz), lower offset voltage (0.895 mV), lower noise (10.8 nV/√Hz)

Product details

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 Automotive Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.3 Features EMI Hardened Input bias current (Max) (pA) 15 CMRR (Typ) (dB) 120 Output current (Typ) (mA) 25 Architecture CMOS
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 Automotive Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.3 Features EMI Hardened Input bias current (Max) (pA) 15 CMRR (Typ) (dB) 120 Output current (Typ) (mA) 25 Architecture CMOS
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • Qualified for automotive applications
  • AEC-Q100 test guidance with the following results:
    • Temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level:
      • Level 3A forOPA171-Q1
      • Level 2 for OPA4171-Q1
    • Device CDM ESD classification level
      • Level C4A for OPA171-Q1TLV171-Q1
      • Level C6 for OPA2171-Q1
      • Level C6 for OPA4171-Q1
  • Supply range:
    • Single-supply: 2.7 V to 36 V
    • Dual-supply ±1.35 V to ±18 V
  • Low noise: 14 nV/√Hz at 1 kHz
  • Low offset drift: ±0.3 µV/°C (typical)
  • Input range includes negative supply
  • Input range operates to positive supply with reduced performance
  • 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: 10 pA
  • Industry-Standard Package:
    • 5-Pin Small-Outline Transistor SOT-23 (DBV) Package
  • Qualified for automotive applications
  • AEC-Q100 test guidance with the following results:
    • Temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD classification level:
      • Level 3A forOPA171-Q1
      • Level 2 for OPA4171-Q1
    • Device CDM ESD classification level
      • Level C4A for OPA171-Q1TLV171-Q1
      • Level C6 for OPA2171-Q1
      • Level C6 for OPA4171-Q1
  • Supply range:
    • Single-supply: 2.7 V to 36 V
    • Dual-supply ±1.35 V to ±18 V
  • Low noise: 14 nV/√Hz at 1 kHz
  • Low offset drift: ±0.3 µV/°C (typical)
  • Input range includes negative supply
  • Input range operates to positive supply with reduced performance
  • 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: 10 pA
  • Industry-Standard Package:
    • 5-Pin Small-Outline Transistor SOT-23 (DBV) Package

The OPA171-Q1 family of devices is a 36-V, single-supply, low-noise operational amplifier (op amp) with the ability to operate on supplies ranging from 2.7 V (±1.35 V) to 36 V (±18 V). This series is available in multiple packages and offers low offset, drift, and low quiescent current. 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 OPAx171-Q1 family of devices is specified from 2.7 V to 36 V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171-Q1 family of devices 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. The device 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-Q1 op amp family is specified from –40°C to +125°C.

The OPA171-Q1 family of devices is a 36-V, single-supply, low-noise operational amplifier (op amp) with the ability to operate on supplies ranging from 2.7 V (±1.35 V) to 36 V (±18 V). This series is available in multiple packages and offers low offset, drift, and low quiescent current. 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 OPAx171-Q1 family of devices is specified from 2.7 V to 36 V. Input signals beyond the supply rails do not cause phase reversal. The OPAx171-Q1 family of devices 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. The device 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-Q1 op amp family is specified from –40°C to +125°C.

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Type Title Date
* Data sheet OPAx171-Q1 36-V, Single-Supply, General-Purpose Operational Amplifier datasheet (Rev. D) PDF | HTML 27 Aug 2020
Technical article What is an op amp? 21 Jan 2020
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) 30 Nov 2018
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005

Design & development

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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-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.

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Simulation model

OPAy171 Family TINA-TI Reference Design (Rev. C)

SBOM442C.TSC (357 KB) - TINA-TI Reference Design
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OPAy171 Family TINA-TI Spice Model (Rev. B)

SBOM441B.ZIP (9 KB) - TINA-TI Spice Model
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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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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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