Texas Instruments OPAx990 Low-Offset Low-Power Op Amps
Texas Instruments OPAx990 Low-Offset Low-Power Operational Amplifiers (Op Amps) are a family of high voltage (40V) general-purpose operational amplifiers. These devices offer excellent DC precision and AC performance, including rail-to-rail input/output, low offset (±300µV, typ), and low offset drift (±0.6µV/°C, typ). OPAx990 has unique features such as differential and common-mode input voltage range to the supply rail, high short-circuit current (±80mA), high slew rate (4.5V/µs), and shutdown. These features make the OPAx990 an extremely flexible, robust, and high-performance op amp for high-voltage industrial applications. The Texas Instruments OPAx990 family of op amps is available in micro-size packages (such as X2QFN, WSON, and SOT-553), as well as standard packages (such as SOT-23, SOIC, and TSSOP) and are specified from -40°C to 125°C.Features
- ±300µV low offset voltage
- ±0.6µV/°C low offset voltage drift
- 30nV/√Hz at 1kHz low noise
- 115dB high common-mode rejection
- ±20pA low bias current
- Rail-to-rail input and output
- MUX-friendly/comparator inputs
- The amplifier operates with differential inputs up to supply rail
- The amplifier can be used in open-loop or as a comparator
- 1.1MHz GBW wide bandwidth
- 4.5V/µs high slew rate
- 120µA per amplifier low quiescent current
- ±1.35V to ±20V, 2.7V to 40V wide supply
- 78dB at 1.8GHz robust EMIRR performance
- Differential and common-mode input voltage range to supply rail
Applications
- Multiplexed data-acquisition systems
- Test and measurement equipment
- ADC driver and reference buffer amplifier
- Programmable logic controllers
- High-side and low-side current sensing
- High precision comparator
Functional Block Diagram
Published: 2019-04-09
| Updated: 2024-04-22
