OPA2991QDGKRQ1

Features：

1Features

• 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: 10.5 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

• Differential and common-mode input voltage

range to supply rail

2 Applications

• Low-power audio preamplifier

• Multiplexed data-acquisition systems

• Test and measurement equipment

• ADC driver amplifiers

• SAR ADC reference buffers

• Programmable logic controllers

• High-side and low-side current sensing

• High precision comparator

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/output, low offset (±125 µV, typ), low offset drift (±0.3 µV/°C, typ), low noise (10.5 nV/√Hz and 1.8µVPP), 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), high capacitive load drive (1 nF), and shutdown functionality make the OPAx991-Q1 a robust, highperformance 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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