1 Features
• Low offset voltage: ±300 μV
• Low offset voltage drift: ±0.6 μV/°C
• Low noise: 30 nV/√Hz at 1 kHz
• High common-mode rejection: 115 dB
• Low bias current: ±10 pA
• Rail-to-rail input and output
• MUX-friendly comparator inputs:
– Amplifier operates with differential inputs up to
supply rail
– Amplifier can be used in open-loop or as
comparator
• Wide bandwidth: 1.1-MHz GBW
• High slew rate: 4.5 V/μs
• Low quiescent current: 120 μA per amplifier
• Wide supply: ±1.35 V to ±20 V, 2.7 V to 40 V
• Robust EMIRR performance: 78 dB at 1.8 GHz
• Differential and common-mode input voltage range
to supply rail

2 Applications
• Optimized for AEC-Q100 grade 1 applications
• HEV/EV inverter and motor control
• On-board (OBC) and wireless charger
• HEV/EV battery-management system (BMS)
• Body electronics and lighting
• Infotainment and cluster
• Passive safety
• Powertrain current sensor
• High-side current sensing

3 Description
The OPAx990-Q1 family (OPA990-Q1, OPA2990-Q1,
and OPA4990-Q1) is a family of high voltage (40 V)
general purpose operational amplifiers. These devices
offer excellent DC precision and AC performance,
including rail-to-rail input or output, low offset (±300
μV, typ), and low offset drift (±0.6 μV/°C, typ).
Unique features such as differential and commonmode
input voltage range to the supply rail, high
short-circuit current (±80 mA), and high slew rate (4.5
V/μs) make the OPAx990-Q1 an extremely flexible,
robust, and high-performance op amp for high-voltage
automotive applications.
The OPAx990-Q1 family of op amps is available in
several standard packages (such as, SOT-23, SOIC,
and TSSOP) and is specified from –40°C to 125°C.