ATS636

• Chopper Stabilization
  • Extremely low switch-point drift over temperature
• On-chip Protection
  • Supply transient protection
  • Output short-circuit protection
  • Reverse-battery protection
• True Zero-Speed Operation
• True Power-On State
• Single-chip Sensing IC for High Reliability
• Optimized Magnetic Circuit
• Wide Operating Voltage Range
• Internal Regulator

Description

The ATS635LSE and ATS636LSE programmable, true power-on state (TPOS), sensors are an optimized Hall-effect IC and magnet combination that switch in response to magnetic signals created by ferrous targets in gear-tooth sensing and proximity applications.

The devices ATS636 are externally programmable. A wide range of programmability is available on the magnetic operate point (B_OP) while the hysteresis remains fixed. This advanced feature allows for optimization of the sensor switchpoint and can drastically reduce the effects of mechanical placement tolerances found in production environments.

A proprietary dynamic offset cancellation technique, with an internal high-frequency clock, reduces the residual offset voltage, which is normally caused by device ATS636 overmolding, temperature dependencies, and thermal stress. Having the Hall element and amplifier in a single chip minimizes many problems normally associated with low-level analog signals.

This sensor ATS636system is ideal for use in gathering speed or position information using gear-tooth-based configurations, or for proximity sensing with ferrous targets.

The ATS635LSE switches high in the presence of a ferrous target or tooth and switches low in the presence of a target valley, window, or when the ferrous target is removed. The ATS636LSE has the opposite polarity and switches low in the presence of a ferrous target or tooth and switches high in the presence of a target valley, window, or when the ferrous target is removed.

These devices ATS636 are lead (Pb) free, with 100% matte tin leadframe plating.