AS2333QS-13

Overview

The AS2333QS-13 is a dual CMOS operational amplifier from Diodes Incorporated, utilizing chopper stabilization for ultra-low input offset voltage (8μV typical) and near zero-drift performance. It operates on a single supply of 1.8V to 5.5V with a quiescent current of 12μA per amplifier. Key electrical parameters include a gain-bandwidth product of 350kHz, a slew rate of 0.12V/μs, and an input bias current of 70pA. The device features rail-to-rail input and output capabilities, extending the common-mode range 100mV beyond the rails. It is housed in an SO-8 package and is AEC-Q100 Grade 1 qualified for operation between -40°C and +125°C.

Feature Summary

• Chopper-stabilized architecture eliminates 1/f noise and crossover distortion while maintaining high precision over time and temperature.
• Rail-to-rail input and output functionality allows sensing near ground or system VDD with minimal signal loss.
• Low power consumption design supports battery-powered applications with a quiescent current of 12μA per amplifier.
• Automotive-grade qualification ensures reliability in harsh environments with extended temperature ranges.

Applications

• Battery-powered instruments
• Airbags
• Position sensors
• Vehicle occupant detection sensors

Procurement Notes

Verify that the ordering suffix '-13' corresponds to the tape and reel packaging configuration as specified in the manufacturer's documentation. Confirm compliance with RoHS directives and halogen-free requirements for environmental standards. Ensure the selected component meets AEC-Q100 Grade 1 specifications if intended for automotive deployment. Cross-reference the datasheet revision to confirm pin assignments and electrical characteristics match the production batch.

Selection Notes

Select this component for applications requiring high precision at low frequencies where traditional amplifiers suffer from drift and flicker noise. The rail-to-rail input capability makes it suitable for single-supply systems operating near ground potential. Consider the 350kHz bandwidth when designing circuits for higher frequency signals, as the chopper stabilization may limit performance above certain thresholds compared to linear amplifiers.

Part Context

The AS2333Q series represents Diodes Incorporated's entry into the zero-drift operational amplifier market, targeting high-precision analog signal conditioning. It serves as a dual-channel counterpart to single-channel variants within the same family. The device integrates chopping stabilization technology to achieve microvolt-level offset voltages without sacrificing power efficiency, distinguishing it from standard CMOS op-amps in the general-purpose category.

Replacement Considerations

Direct replacements must maintain the SO-8 package and dual-channel configuration. Verify that substitute components offer comparable input offset voltage and drift characteristics to ensure circuit accuracy is preserved. Check for compatible supply voltage ranges and quiescent current levels to maintain power budget constraints.

FAQ

How does the chopper stabilization technique affect the AS2333QS-13's noise performance?

The chopper stabilization technique effectively eliminates 1/f noise, resulting in significantly lower noise density at DC and low frequencies compared to conventional amplifiers. This makes the device particularly effective for high-gain sensor applications operating at lower frequencies.

What is the common-mode input voltage range of the AS2333QS-13?

The common-mode input voltage range extends 0.1V beyond both supply rails. This feature allows the amplifier to accurately sense signals even when they are very close to the negative supply (ground) or the positive supply (VDD).