Outputs an analog voltage proportional to the magnetic field through its face, centered at half the supply so it reads both magnetic poles. It is ratiometric to VCC, so an ADC on the same rail measures field directly, and on-chip temperature compensation holds the sensitivity flat over temperature, which older linear Hall sensors struggle with. Sensitivity options (A1-A4) trade range against resolution. Runs from 3.3 or 5 V. A precise analog sensor for position, angle, and current sensing with a magnet.

Pinout

Pin	Name	Type	Function
1	VCC	power_in	Power supply, 3.0 to 3.63 V or 4.5 to 5.5 V. TI recommends connecting this pin to ground via a ceramic bypass capacitor of at least 0.01 µF. Absolute-maximum V_CC is 7 V.
2	OUT	output	Analog output; ratiometric to V_CC with a V_CC/2 quiescent offset. Output-drive current range is -1 to +1 mA and the linear output range is 0.2 V to V_CC - 0.2 V.
3	GND	power_in	Ground reference for the device.

Key specifications

Parameter	Value
Type	Ratiometric linear Hall-effect sensor
Output	Analog, ratiometric to VCC
Sensitivity	Selectable (A1-A4 options)
Temp compensation	On-chip
Quiescent output	VCC/2 (no field)
Supply	3.3 V or 5 V
Package	SOT-23

Ordering variants

Same part, different packaging or reel option.

DRV5055A1QDBZR (SOT-23)
DRV5055A2QLPGM (TO-92)
DRV5055A4QDBZR (SOT-23, higher sensitivity)

CAD (KiCad official)

Symbol: Sensor_Magnetic:DRV5055A1xDBZxQ1 (KiCad official)
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (35 pp, sha256 d04305a4ae7a603f, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF