Product details

Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 40 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Rail-to-rail In, Out GBW (Typ) (MHz) 4.5 Slew rate (Typ) (V/us) 21 Vos (offset voltage @ 25 C) (Max) (mV) 0.895 Iq per channel (Typ) (mA) 0.56 Vn at 1 kHz (Typ) (nV/rtHz) 10.8 Rating Automotive Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.3 Features EMI Hardened, High Cload Drive, MUX Friendly CMRR (Typ) (dB) 130 Output current (Typ) (mA) 75 Architecture CMOS
Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 40 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Rail-to-rail In, Out GBW (Typ) (MHz) 4.5 Slew rate (Typ) (V/us) 21 Vos (offset voltage @ 25 C) (Max) (mV) 0.895 Iq per channel (Typ) (mA) 0.56 Vn at 1 kHz (Typ) (nV/rtHz) 10.8 Rating Automotive Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 0.3 Features EMI Hardened, High Cload Drive, MUX Friendly CMRR (Typ) (dB) 130 Output current (Typ) (mA) 75 Architecture CMOS
SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2A
    • Device CDM ESD classification level C6
  • Low offset voltage: ±125 µV
  • Low offset voltage drift: ±0.3 µV/°C
  • Low noise: 10.8 nV/√Hz at 1 kHz
  • High common-mode rejection: 130 dB
  • Low bias current: ±10 pA
  • Rail-to-rail input and output
  • Wide bandwidth: 4.5 MHz GBW
  • High slew rate: 21 V/µs
  • High capacitive load drive: 1 nF
  • MUX-friendly/comparator inputs
    • Amplifier operates with differential inputs up to supply rail
    • Amplifier can be used in open-loop or as comparator
  • Low quiescent current: 560 µA per amplifier
  • Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
  • Robust EMIRR performance: EMI/RFI filters on input and supply pins
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2A
    • Device CDM ESD classification level C6
  • Low offset voltage: ±125 µV
  • Low offset voltage drift: ±0.3 µV/°C
  • Low noise: 10.8 nV/√Hz at 1 kHz
  • High common-mode rejection: 130 dB
  • Low bias current: ±10 pA
  • Rail-to-rail input and output
  • Wide bandwidth: 4.5 MHz GBW
  • High slew rate: 21 V/µs
  • High capacitive load drive: 1 nF
  • MUX-friendly/comparator inputs
    • Amplifier operates with differential inputs up to supply rail
    • Amplifier can be used in open-loop or as comparator
  • Low quiescent current: 560 µA per amplifier
  • Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
  • Robust EMIRR performance: EMI/RFI filters on input and supply pins

The OPAx991-Q1 family (OPA991-Q1, OPA2991-Q1, and OPA4991-Q1) is a family of high voltage (40 V) general purpose operational amplifiers for automotive application. These devices offer exceptional DC precision and AC performance, including rail-to-rail input/output, low offset (±125 µV, typ), low offset drift (±0.3 µV/°C, typ), low noise (10.8 nV/√Hz and 1.8 µVPP), and 4.5-MHz bandwidth.

Unique features such as differential and common-mode input-voltage range to the supply rail, high output current (±75 mA), high slew rate (21 V/µs), and high capacitive load drive (1 nF) make the OPAx991-Q1 a robust, high-performance operational amplifier for high-voltage automotive applications.

The OPAx991-Q1 family of op amps is available in standard packages (such as SOT-23, SOIC, VSSOP, and TSSOP) and is specified from –40°C to 125°C.

The OPAx991-Q1 family (OPA991-Q1, OPA2991-Q1, and OPA4991-Q1) is a family of high voltage (40 V) general purpose operational amplifiers for automotive application. These devices offer exceptional DC precision and AC performance, including rail-to-rail input/output, low offset (±125 µV, typ), low offset drift (±0.3 µV/°C, typ), low noise (10.8 nV/√Hz and 1.8 µVPP), and 4.5-MHz bandwidth.

Unique features such as differential and common-mode input-voltage range to the supply rail, high output current (±75 mA), high slew rate (21 V/µs), and high capacitive load drive (1 nF) make the OPAx991-Q1 a robust, high-performance operational amplifier for high-voltage automotive applications.

The OPAx991-Q1 family of op amps is available in standard packages (such as SOT-23, SOIC, VSSOP, and TSSOP) and is specified from –40°C to 125°C.

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Type Title Date
* Data sheet OPAx991-Q1 Automotive, 40-V Rail-to-Rail Input/Output, Low Offset Voltage, Low Noise Op Amp datasheet (Rev. D) 14 Sep 2021
Application note Wide temperature range linear negative temperature coefficient (NTC) output 22 Dec 2020
Application note Wide temperature range linear positive temperature coefficient (PTC) output 18 Dec 2020
Technical article What is an op amp? 21 Jan 2020
Application note Using An Op Amp for High-Side Current Sensing 22 Mar 2019
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

Design & development

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VSSOP (DGK) 8 View options

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