A3503
Ratiometric Linear Hall Effect Sensor IC Discontinued Product
These parts are no longer in production The device should not be purchased for new design applications. Samples are no longer available. Date of status change: October 31, 2005 Recommended Substitutions:
The drop-in replacement is the A1302, with a more sensitive option also available, the A1301. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. 3503
The UGN3503LT, UGN3503U, and UGN3503UA Hall-effect sensor ICs accurately track extremely small changes in magnetic flux density-changes generally too small to operate Hall-effect switches. RATIOMETRIC, LINEAR HALL-EFFECT SENSOR ICS For 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 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. Three package styles provide a magnetically optimized package for most applications. Package suffix `LT' is a miniature SOT-89/TO243AA transistor package for surface-mount applications; suffix `U' is a miniature three-lead plastic SIP, while `UA' is a three-lead ultra-miniSIP. All devices are rated for continuous operation over the temperature range of -20°C to +85°C. Data Sheet 27501D V CC 1 X
2 3 GROUND OUTPUT SUPPLY Dwg. PH-006 FEATURES Extremely Sensitive Flat Response to 23 kHz Low-Noise Output 4.5 V to 6 V Operation Magnetically Optimized Package Pinning is shown viewed from branded side. ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC . 8 V Magnetic Flux Density, B . Unlimited Operating Temperature Range, TA . -20°C to +85°C Storage Temperature Range, TS . -65°C to +150°C Always order …
