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UGN3503
Ratiometric Linear Hall-Effect Sensors

These parts have been phased out of production as of October 31, 2005, and the drop-in replacement is the A1302, with a more sensitive option also available, the A1301.

For samples and information on the replacement part, please refer to the A1302.

Replacement Device Characteristics Table

Features

• Extremely Sensitive
• Flat Response to 23 kHz
• Low-Noise Output
• 4.5 V to 6 V Operation
• Magnetically Optimized Package

Description

The UGN3503LT, UGN3503U, and UGN3503UA Hall-effect sensors accurately track extremely small changes in magnetic flux density-changes generally too small to operate Hall-effect switches. As motion detectors, gear tooth sensors, and proximity detectors, they are magnetically driven mirrors of mechanical events. As sensitive monitors of electromagnets, they can effectively measure a system's performance with negligible system loading while providing isolation from contaminated and electrically noisy environments.

Each Hall-effect integrated circuit includes a Hall sensing element, linear amplifier, and emitter-follower output stage. Problems associated with handling tiny analog signals are minimized by having the Hall cell and amplifier on a single chip.

Functional Block Diagram