APS12625 and APS12626: 2D, Dual-Channel, Low Voltage Hall-Effect Latch

The APS12625 and APS12626 2D Hall-effect latch family was developed for functional safety in accordance with ISO 26262:2011.

These devices are 2D Hall-effect latches that feature both vertical and planar Hall elements. They are available in all three combinations of vertical and planar Hall elements (XY, ZX, and ZY). All three options feature sensing axes that are orthogonal to one another and provide 90° of phase separation for ring magnets. The phase separation is inherently independent of magnet pole spacing and air gap.

The 2D architecture of these devices simplify motor and magnetic encoder designs by providing two output options and three sensing axes options in a very small footprint. The APS12625 and APS12626 provide unprecedented flexibility in end-system magnetic design. The two output options include a Speed and Direction output (APS12625) and a quadrature Channel A and Channel B output (APS12626).

A unique feature available on this family allows the host system to restore the correct state after power-cycling the device if the sensor powers up in the hysteresis region (-P option). This reduces the potential accumulation of lost counts/pulses when the device is power cycled with one or more sensors in its hysteresis region.
On a single silicon chip, these devices include: three Hall plates (one planar and two vertical), a multiplexer, a small-signal amplifier, chopper stabilization, a Schmitt trigger, and two NMOS output transistors which can sink up to 10 mA. These devices feature a low-voltage design that allows operation from 2.8 to 5.5 V and are available in L temperature range (–40°C to 150°C). APS12625 and APS12626 have been qualified to 175°C junction temperature for 500 hours.

The APS12625 and APS12626 are available in a 5-pin SOT23W surface-mount package (LH) Each is offered in two options for a variety of magnet to sensor orientations. The packages are RoHS compliant and lead (Pb) free, with 100% matte-tin leadframe plating.

• Highly flexible and easy-to-use sensor for motor/encoder applications
• 2D magnetic sensing via planar and vertical Hall elements
  • Quadrature independent of magnet pole pitch and air gap—no target optimization required
  • Works in almost any orientation to the target (XY, ZX, and ZY options)
• Reduces accumulation of lost counts/pulses
  • System can restore correct state after power-cycling (-P option)
• Dual outputs of quadrature or speed/direction signals
• High magnetic sensitivity
• Optimized for applications with regulated power rails
  • Operation from 2.8 to 5.5 V
• Automotive grade
  • AEC-Q100 qualified
  • T_Jup to 175°C
  • Output short-circuit protection
  • Resistant to physical stress
• Small size