1 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: ±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

2 Applications

• Optimized for AEC-Q100 grade 1 applications

• Infotainment and cluster

• Passive safety

• Body electronics and lighting

• HEV/EV inverter and motor control

• On-board (OBC) and wireless charger

• Powertrain current sensor

• Advanced driver assistance systems (ADAS)

• High-side current sensing

3 Description

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 or output, low offset (±125 μV, typical), low offset

drift (±0.3 μV/°C, typical), low noise (10.8 nV/√Hz and

1.8 μVPP), and 4.5-MHz bandwidth.

Unique features such as differential and commonmode

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, SC70, SOIC,

VSSOP, and TSSOP) and is specified from –40°C to

125°C.