Sensors / Detectors / Transducers
Bipolar Hall Sensors detect magnetic field quickly, safely.
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Press Release Summary:
Operating from 4-5.5 V supply, N- and S-pole sensing Hall-sensor series S-5721A/22A/23A are laid out in CMOS with Push-Pull or N-Ch-Open-Drain Output. Detection frequency of 7.6 kHz corresponds to 0.132 ms detection period and current consumption of 0.95 mA in pulsed S-5722A, while continuous-duty S-5723A exhibits 3 mT/-3 mT typ sensitivitya and is packaged in SOT-23-3 that can dissipate 430 mW. Requiring 0.08 mA, S-5721A has 0.63 KHz detection frequency and 1.58 ms detection period.
Original Press Release:
Fast Bipolar Hall Sensors in Energy Saving CMOS
NEU-ISENBURG, Germany, November 23 -- The new N- and S-pole sensing Hall-sensor series S-5721A/22A/23A are laid out in CMOS with Push-Pull or N-Ch-Open-Drain Output. Despite low current consumption magnetic field is detected fast and safe. The magnetism detection logic, S-pole approximation initiates a "H" to "L" transition, (N-pole initiates "L" to "H"), the supply voltage range of 4V to 5,5V and the operating temperature range of -40degreesC to +85degreesC, are common to all ICs. The Hall-Sensors differ in speed and current requirement on one hand and magnetic sensitivity, energy-saving-option and package type on the other.
S-5722A/23A belong to the faster Hall ICs with a detection frequency of 7.6 KHz, corresponding to 0.132ms detection period. The resulting current consumption of 0.95mA in the S-5722A can be reduced to 1nA using the Power-Down-Function, pulsed operation for energy saving is possible. S-5723A is destined for continuous operation, packaged in SOT-23-3 that can dissipate 430mW; its sensitivity is 3mT/-3mT typical. The S-5721A has the lowest current requirements of only 0.08mA, which may be reduced to 1nA using the Power-Down-Function. Its detection frequency of 0.63KHz corresponds to 1.58ms detection period. With the faster S-5722A it has higher sensitivity of typ.
2.5mT/-2.5mT and the small SNT-4A package in common. The Hall sensor ICs are aimed at rotation detection as found in the control of motors and drives. The appropriate arrangement of 2 sensors permits detection of speed and direction of rotation, a capability helpful for jog-dial switches. Seiko Instruments manufactures and sells also magnets to control Hall sensor ICs.
Contact:
Paul Krisam, Technical Sales Support Manager, Components Department
Seiko Instruments GmbH, Siemensstrasse 9, 63263 Neu-Isenburg, Germany
Tel.: +49-6102-297-143, Fax: +49-6102-297-50-143 Mobile: +49-172-6396-127, eMail: Paul.Krisam@seiko-instruments.de
Website: www.seiko-instruments.de
