A1301 & A1302 - Continuous-Time Ratiometric Linear Hall
Effect Sensor IC
General Description:
The A1301 and A1302 are continuous-time, ratiometric, linear Hall-effect sensor ICs.
They are optimized to accurately provide a voltage output that is proportional to an
applied magnetic field. These devices have a quiescent output voltage that is 50% of
the supply voltage. Two output sensitivity options are provided: 2.5 mV/G typical for
the A1301, and 1.3 mV/G typical for the A1302.
The Hall-effect integrated circuit included in each device includes a Hall sensing
element, a linear amplifier, and a CMOS Class A output structure. Integrating the Hall
sensing element and the amplifier on a single chip minimizes many of the problems
normally associated with low voltage level analog signals.
High precision in output levels is obtained by internal gain and offset trim adjustments made at end-of-line
during the manufacturing process.
These features make the A1301 and A1302 ideal for use in position sensing systems, for both linear target
motion and rotational target motion. They are wellsuited for industrial applications over extended
temperature ranges, from -40°C to 125°C.
Two device package types are available: LH, a 3-pin SOT23W type for surface mount, and UA, a 3-pin
ultramini SIP for through-hole mount. Each package is available in a lead (Pb) free version (suffix, -T) with
100% matte tin plated leadframe.
Key Features:
Symmetrical latch switchpoints
Resistant to physical stress
Superior temperature stability
Output short-circuit protection
Operation from unregulated supply
down to 3 V
Reverse battery protection
Solid-state reliability