AH189x, AH1812, and AH3360 Hall Switches


Diodes introduces six high-performance Hall-Effect sensor switches

Diodes Incorporated introduces six high-performance Hall-Effect sensor switches, designed to save power in position and proximity detection roles in a variety of consumer, home appliance, and industrial equipment. Optimized for a supply voltage range from 1.6 V to 3.6 V and using a hibernating clocking system to minimize power consumption, the switches’ average supply current is typically 4.3 μA at 1.8 V. The micropower Hall-Effect product introduction comprises the medium-sensitivity AH1895 and high-sensitivity AH1893, AH1897, and AH1812 omnipolar switches. Also included are the programmable high-sensitivity AH1894 omnipolar switch and the AH3360, a high-sensitivity unipolar (south pole) switch. These simple devices are offered in space-saving and low-profile X1-DFN1216-4 (1.2 mm x 1.6 mm x 0.5 mm) and leaded SOT553 (1.6 mm x 1.6 mm x 0.5 mm) packages.

All devices, with the exception of the AH1812, include an internal push-pull output structure, which enables a reduction in external component count and a simplification of PCB layouts. The AH1812 provides an open-drain output option for added flexibility in system pull-up. A chopper-stabilized design means these highly-integrated devices offer improved temperature stability, immunity to stress effects, and minimal drift across their operating temperature range of -40ºC to 85ºC. Protection against ESD is also high at 8 kV, helping to improve product robustness and simplifying handling during manufacture. Providing additional design flexibility, the programmable-variant AH1894 enables users to select between one of two magnetic sensitivity ranges using a band-select pin, allowing the one device to accommodate different strengths of magnets located at different distances from the Hall sensor. Band-selection can either be hardwired or programmed electronically using an external logic source such as a microcontroller.

Features
  • Omnipolar operation (north or south pole)
  • Supply voltage of 1.6 V to 3.6 V
  • Micropower operation
  • Chopper-stabilized design provides superior temperature stability
  • Enhanced immunity to physical stress
  • Good RF noise immunity
  • -40°C to 85°C operating temperature
  • Totally lead-free and RoHS compliant
  • Halogen- and antimony-free. “Green” device

Applications
  • Open and close detect for cellular phones
  • Cover or display switch in portable PCs
  • Holster or cover detect for cellular phones and tablet
  • Contact-less switches in home appliances and industrial applications
  • Digital still, video cameras,and handheld gaming consoles

Hall-Effect Switch Family

Manufacturer Part Number Description Available Quantity Datasheets
AH1812-FA-7 IC HALL SENSR OMNIPLOR SW 4DFN 1325
AH1893-FA-7 IC HALL SENSR OMNIPLOR SW 4DFN 2647
AH1893-Z-7 IC HALL SENSR OMNIPLOR SW SOT553 2237
AH1894-FA-7 IC HALL SWITCH OMNIPO DFN1216-4 2965
AH1894-Z-7 IC HALL SWITCH OMNIPO SOT553 2975
AH1895-FA-7 IC HALL SENSR OMNIPLOR SW 4DFN 2945
AH1895-Z-7 IC HALL SENSR OMNIPLOR SW SOT553 2379
AH1897-FA-7 IC HALL SENSR OMNIPLOR SW 4DFN 3000
AH3360-FA-7 IC HALL SENSR UNIPLOR SW 4DFN 2962
AH3360-FT4-7 IC HALL SENSR UNIPLOR SW 6DFN 2994
AH3360-Z-7 IC HALL SENSR UNIPLOR SW SOT553 2944