COSEMITECH CHI931TB

The CHA93X/CHI93X Hall-effect sensor is extremely temperature-stable and stress-resistant sensor ICs, especially suited for operation over extended temperature ranges from -40°C to 150°C. Superior high temperature performance is possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device over-molding, temperature dependencies, and thermal stress. The device includes a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short circuit protected open-drain output to sink up to 25 mA. An on-board regulator permits operation with supply voltages of 2.5 to 22 V. The advantage of operating down to 2.5V is that the device can used in 2.5V applications or with additional external resistance in series with the supply pin for greater protection against high-voltage transient events. The CHA93X/CHI93X series is digital Omnipolar Hall switch. When the applied magnetic flux density exceeds the BOP threshold, the chip open-drain output goes low. The output stays low until the field decreases to less than BRP, and then the output goes to high impedance. The CHA93X/CHI93X also integrated internal clamps against supply/output transients; output short circuits protection; reverse battery conditions. Three package styles provide a magnetically optimized package for most applications, SOT-23, TO-92S and SOT-89. Each package type is lead (Pb) free (suffix, -T), with a 100% matte-tin-plated lead-frame.

• AEC-Q100 automotive qualified for CHA93X - Digital Omnipolar-Switch Hall Sensor
• Superior Temperature Stability
• Multiple Sensitivity Options (BOP / BRP): ±25 / ±15 Gauss; ±70 / ±35 Gauss; ±100 / ±50 Gauss
• On board voltage regulator for 2.5V to 22V range
• Open Drain Output (25 mA Sink)
• Resistant to physical stress
• Output short-circuit protection
• Operation from unregulated supply
• Reverse-battery and freewheeling protection
• Solid-state reliability
• Wide Operating temperature range: -40 to 150°C
• Small package sizes TO-92S, SOT-23 and SOT-89
• RoHS-compliant material meets directive 2011/65/EU

• Docking Detection
• Door Open and Close Detection
• Proximity Sensing
• Valve Positioning
• Pulse Counting
• Flow rate sensing
• Robotic control (cylinder position monitoring)
• Float-based fluid level sensing
• Speed and RPM sensing in fitness equipment