OPA333AIDBVR-HXY

The OPAx333 series amplifiers provide input offset voltage correction through a patented fast-settling chopper stabilization technique, achieving ultralow offset and drift. This approach continuously measures and compensates for input offset, eliminating drift over time and temperature as well as 1/f noise. This design breakthrough delivers a 350kHz gain-bandwidth product and a high slew rate of 0.22V/μs while consuming only 26μA of quiescent current. These devices are unity-gain stable and feature excellent power supply rejection ratio and common-mode rejection ratio. The series is ideal for applications requiring precision amplification of low-level signals that cannot tolerate error sources yet demand high bandwidth and fast transient response. Rail-to-rail input and output swing makes both high-side and low-side sensing straightforward. The series operates from a single supply as low as 1.8V, making it suitable for dual-battery applications. These op amps feature enhanced EMI protection to minimize interference from external sources, along with high ESD protection. All versions are specified for operation over the extended industrial temperature range of -40°C to +125°C.

Applications

• Precision current sensing
• Resistive thermal detectors
• Temperature, position, and pressure sensors
• Medical equipment
• Electronic scales

Key features

• High DC accuracy: max offset voltage ±10μV, max drift ±50nV/°C; min open-loop gain 112dB; min PSRR 112dB; min CMRR 112dB; typical noise voltage 1.1μVₚ₋ₚ (0.1Hz to 10Hz).
• 350kHz bandwidth and 0.22V/μs slew rate.
• 6μs settling time to 0.1% accuracy for 1V step signal.
• 55μs overload recovery time to 0.1% accuracy.
• 26μA quiescent current per amplifier; wide supply voltage range: 1.8V to 5.5V.
• Operating temperature range: -40°C to +125°C.