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OPA4991D - Low-Noise OpAmp

Download the OPA4991D datasheet PDF. This datasheet also covers the OPA991 variant, as both devices belong to the same low-noise opamp family and are provided as variant models within a single manufacturer datasheet.

General Description

The OPAx991 family (OPA991, OPA2991, and OPA4991) is a family of high voltage (40-V) general purpose operational amplifiers.

Key Features

  • 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OPA991-etcTI.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription for OPA4991D (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for OPA4991D. For precise diagrams, and layout, please refer to the original PDF.

www.ti.com OPA991, OPA2991, OPA4991 SBOS969D – OOCTPOAB9E9R12,0O19P–AR2E9V9IS1E,DOJPUALY42909210 SBOS969D – OCTOBER 2019 – REVISED JULY 2020 OPAx991 40-V Rail-to-Rail Inp...

View more extracted text
S969D – OCTOBER 2019 – REVISED JULY 2020 OPAx991 40-V Rail-to-Rail Input/Output, Low Offset Voltage, Low Noise Op Amp 1 Features • 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

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