Allegro®The A1210-A1214 Hall-effect latch is a next-generation replacement to the popular Allegro 317x and 318x latch switch series. The A121x family is manufactured using BiCMOS technology and offers fast power-up and low operating noise. The device is programmed after the package to eliminate bias caused by package stress, ensuring higher switchpoint accuracy. Unique Hall element geometry and low bias amplifiers help reduce noise and reduce residual offset voltages typically caused by device overmolding, temperature surges, and thermal stress.
A1210-A1214HallThe effect lock is stored in a single silicon chip and contains the following components: voltage regulator, Hall voltage generator, small signal amplifier, Schmitt trigger, and NMOS output transistor. An integrated voltage regulator allows operation between 3.8 and 24 V. Extended on-board protection circuitry enables an absolute maximum voltage rating of ± 30 V, providing superior protection for automotive and industrial motor rectification applications without the need for additional external components. All devices in the family make no difference except for the magnetic switchpoint level.
The small and delicate geometry of the BiCMOS process allows these devices to be available in ultra-small packages. Available package types provide magnetically optimized solutions for most applications. Package LH is a SOT23W miniature low profile surface mount package, while Package UA is a three-pin ultra-small SIP for via mounting All packages are Pb-free and the leadframe is 100% matte tin plating.
- Work continuously
- Stable operation over the entire operating temperature range
- Reverse battery protection
- High reliability
- End-of-line factory programming for optimal performance
- Reliable EMC performance
- High ESD protection rating
- Regulator stability without bypass capacitors
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