A1301 and A1302
Continuous-Time Ratiometric Linear Hall Effect Sensors
The A1301 and A1302 are continuous-time, ratiometric, linear Hall-effect sensors.
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.
Package LH, 3-pin Surface Mount
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.
1. VCC
3
2. VOUT
3. GND
1
High precision in output levels is obtained by internal gain and offset trim adjust-
ments made at end-of-line during the manufacturing process.
2
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 well-
suited for industrial applications over extended temperature ranges, from –40°C to
125°C.
Package UA, 3-pin SIP
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 lead-
frame.
1. VCC
2. GND
3. VOUT
1
2
3
Features and Benefits
ꢀLow-noise output
ꢀFast power-on time
ABSOLUTE MAXIMUM RATINGS
ꢀRatiometric rail-to-rail output
ꢀ4.5 to 6.0 V operation
Supply Voltage, VCC ............................................8 V
Output Voltage, VOUT ..........................................8 V
Reverse-Supply Voltage, VRCC .......................–0.1 V
Reverse-Output Voltage, VROUT .....................–0.1 V
Output Sink Current, IOUT ............................. 10 mA
Operating Temperature
ꢀSolid-state reliability
ꢀFactory-programmed at end-of-line for optimum performance
ꢀRobust ESD performance
Ambient, TA, Range E..................–40ºC to 85ºC
Ambient, TA, Range K ...............–40ºC to 125ºC
Maximum Junction, TJ(max)........................165ºC
Storage Temperature, TS ..................–65ºC to 170ºC
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
A1301-DS, Rev. 2