AS333SE-7

Overview

The AS333SE-7 is a precision operational amplifier from Diodes Incorporated, utilizing chopping stabilization to eliminate 1/f noise and crossover distortion. It operates on a single supply of 1.8V to 5.5V or dual supplies of ±0.9V to ±2.5V. Key electrical parameters include an input offset voltage of 8μV, a gain-bandwidth product of 350kHz, and a quiescent current of 17μA. The device features rail-to-rail input and output capabilities with common-mode voltage extending 100mV beyond the supply rails. It is housed in a SOT353 package and specified for operation between -40°C and +125°C.

Feature Summary

• Chopper-stabilized architecture eliminates flicker noise and minimizes input offset voltage drift over temperature.
• Rail-to-rail input and output capability allows maximum output swing and extends common-mode voltage range beyond supply rails.
• Low power consumption with high speed efficiency, providing 350kHz gain bandwidth at only 17μA quiescent current.
• High ESD tolerance rated at 4000V HBM, suitable for harsh operating environments.

Applications

• Battery-powered instruments
• Medical instrumentation
• Low voltage current sensing
• Sensor signal conditioning

Procurement Notes

Verify the specific ordering suffix '-7' corresponds to the Tape & Reel packaging configuration as documented in the manufacturer's ordering information. Confirm that the component meets RoHS compliance standards and is free from halogens and antimony if required by the design specifications. Ensure the selected package variant matches the intended PCB layout requirements.

Selection Notes

Select this component when low-frequency precision is critical due to its zero-drift technology which removes 1/f noise. It is appropriate for applications requiring extended common-mode voltage ranges near ground or VDD. Consider the 200pF capacitive load drive capability for unity-gain stability without additional isolation resistors in standard configurations.

Part Context

The AS333 series includes variants such as the AS333W5-7 in SOT25 and the AS333SE-7 in SOT353 packages. Both share identical electrical characteristics and functionality but differ in physical footprint. The SE suffix specifically denotes the SOT353 surface-mount package, facilitating integration into compact electronic designs requiring small form factors.

Replacement Considerations

Direct substitutes within the same family include the AS333W5-7, which offers identical performance in a SOT25 package. Verify pin compatibility and thermal resistance differences between SOT25 and SOT353 packages during replacement to ensure adequate heat dissipation and mechanical fit.

FAQ

How does the AS333 handle capacitive loads?

The AS333 is unity-gain stable up to a 200pF capacitive load. For heavier loads, an isolation resistor or RC snubber circuit can be used to maintain stability and prevent oscillation.

What is the input common-mode voltage range?

The common-mode voltage range extends 100mV beyond the supply rails, allowing the amplifier to sense signals near ground or system VDD effectively.