Texas Instruments OPA2991
The OPAx991 family (OPA991, OPA2991, and OPA4991) is a family of high voltage (40-V) general purpose operational amplifiers. 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 1.8 µVPP) and 4.5-MHz bandwidth. The OPAx991 family of op amps is available in microsize packages (such as X2QFN, WSON, and SOT-553), as well as standard packages (such as SOT-23, SOIC, and TSSOP), and is specified from – 40°C to 125°C.| Part No. | OPA2991 |
|---|---|
| Datasheet | OPA2991 Download |
| Manufacturer |  Texas Instruments |
| Description | Low-Noise OpAmp |
| Buy | Stock & Price |
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: ±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
Unique features such as differentia...
