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OPA4991-Q1
  • OPA4991-Q1
  • OPA4991-Q1
  • OPA4991-Q1
  • OPA4991-Q1
  • OPA4991-Q1

OPA4991-Q1

ACTIVE

Automotive, quad, 40-V, 4.5-MHz, low-power operational amplifier

Texas Instruments OPA4991-Q1 Product Info

1 April 2026 1

Parameters

Number of channels

4

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

40

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

2.7

Rail-to-rail

In, Out

GBW (typ) (MHz)

4.5

Slew rate (typ) (V/µs)

21

Vos (offset voltage at 25°C) (max) (mV)

0.895

Iq per channel (typ) (mA)

0.56

Vn at 1 kHz (typ) (nV√Hz)

10.8

Rating

Automotive

Operating temperature range (°C)

-40 to 125

Offset drift (typ) (µV/°C)

0.3

Features

EMI Hardened, High Cload Drive, MUX Friendly, Small Size

CMRR (typ) (dB)

130

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)

0.1

Output swing headroom (to negative supply) (typ) (V)

0.025

Output swing headroom (to positive supply) (typ) (V)

-0.025

Package

SOIC (D)-14-51.9 mm² 8.65 x 6

Features

  • 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: ±125µV
  • Low offset voltage drift: ±0.3µV/°C
  • Low noise: 10.8nV/√Hz at 1kHz
  • High common-mode rejection: 130dB
  • Low bias current: ±10pA
  • Rail-to-rail input and output
  • Wide bandwidth: 4.5MHz GBW
  • High slew rate: 21V/µs
  • High capacitive load drive: 1nF
  • 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: 560µA per amplifier
  • Wide supply: ±1.35V to ±20V, 2.7V to 40V
  • Robust EMIRR performance
  • 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: ±125µV
  • Low offset voltage drift: ±0.3µV/°C
  • Low noise: 10.8nV/√Hz at 1kHz
  • High common-mode rejection: 130dB
  • Low bias current: ±10pA
  • Rail-to-rail input and output
  • Wide bandwidth: 4.5MHz GBW
  • High slew rate: 21V/µs
  • High capacitive load drive: 1nF
  • 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: 560µA per amplifier
  • Wide supply: ±1.35V to ±20V, 2.7V to 40V
  • Robust EMIRR performance

Description

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

Unique features such as differential and common-mode input-voltage range to the supply rail, high output current (±75mA), high slew rate (21V/µs), and high capacitive load drive (1nF) 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, SC70, 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 (40V) general purpose operational amplifiers for automotive application. These devices offer exceptional DC precision and AC performance, including rail-to-rail input or output, low offset (±125µV, typical), low offset drift (±0.3µV/°C, typical), low noise (10.8nV/√Hz and 1.8µVPP), and 4.5MHz bandwidth.

Unique features such as differential and common-mode input-voltage range to the supply rail, high output current (±75mA), high slew rate (21V/µs), and high capacitive load drive (1nF) 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, SC70, SOIC, VSSOP, and TSSOP) and is specified from –40°C to 125°C.

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