CHI923

DESCRIPTION

The CHA92X/CHI92X 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 CHA92X/CHI92X series is digital unipolar 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 CHA92X/CHI92X 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.

APPLICATIONS

-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 

FEATURES

• AEC-Q100 automotive qualified (CHA92X)

• Digital Unipolar-Switch Hall Sensor 

• Superior Temperature Stability

• Multiple Sensitivity Options (BOP / BRP):

+30 / +15 Gauss; +70 / +30 Gauss; +140 / 60 Gauss; +150 /

+100 Gauss; +250 / +200 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 oC

• Small package sizes TO-92S, SOT23 and SOT-89

• RoHS-compliant material meets directive 2011/65/EU