A1301 and A1302
A1301-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
AB SO LUTE MAX I MUM RAT INGS
Supply Voltage, V
CC
............................................8 V
Output Voltage, V
OUT
..........................................8 V
Reverse-Supply Voltage, V
RCC
.......................–0.1 V
Reverse-Output Voltage, V
ROUT
.....................–0.1 V
Output Sink Current, I
OUT
............................. 10 mA
Operating Temperature
Ambient, T
A
, Range E..................–40ºC to 85ºC
Ambient, T
A
, Range K ...............–40ºC to 125ºC
Maximum Junction, T
J(max)
........................165ºC
Storage Temperature, T
S
..................–65ºC to 170ºC
Low-noise output
Fast power-on time
Ratiometric rail-to-rail output
4.5 to 6.0 V operation
Solid-state reliability
Factory-programmed at end-of-line for optimum performance
Robust ESD performance
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.
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 adjust-
ments 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 well-
suited 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 lead-
frame.
Continuous-Time Ratiometric Linear Hall Effect Sensors
Features and Benefits
Package UA, 3-pin SIP
1
2
3
1. VCC
2. GND
3. VOUT
Package LH, 3-pin Surface Mount
1
2
3
1. VCC
2. VOUT
3. GND