A1302 Allegro Micro Systems, Inc., A1302 Datasheet

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A1302

Manufacturer Part Number
A1302
Description
Continuous-Time Ratiometric Linear Hall Effect Sensors
Manufacturer
Allegro Micro Systems, Inc.
Datasheet
Features and Benefits
▪ 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
▪ Robust ESD performance
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Not to scale
A1301-DS, Rev. 5
performance
Continuous-Time Ratiometric Linear Hall Effect Sensors
V+
C BYPASS
VCC
Functional Block Diagram
GND
Regulator
Voltage
www.DataSheet4U.com
Amp
Gain
Description
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 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 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. They are lead (Pb) free (suffix, –T) with
100% matte tin plated leadframes.
Control
Offset
Out
A1301 and A1302
Trim
VOUT

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A1302 Summary of contents

Page 1

... 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 well-suited for industrial applications over extended temperature ranges, from – ...

Page 2

... Pb-based variants are being phased out of the product line. Certain variants cited in this footnote are no longer in production The variants should not be purchased for new design applications. Samples are no longer available. Status change: May 1, 2006. These variants include: A1301ELHLT, A1301EUA, A1301KLHLT, A1301KUA, A1302ELHLT, A1302EUA, A1302KLHLT, and A1302KUA. 2 Contact Allegro for additional packing options ...

Page 3

... A Lin T = 25°C A Sym T = 25° 25°C OUTQ OUTQ(Δ A1301 25°C A Sens A1302 25°C A A1301 (ΔT ) A1302 A Linear Hall Effect Sensors = 5 V, unless otherwise noted Min. Typ. 4.5 – – – 4.65 4.7 – 0.2 – 20 – 3 – ...

Page 4

... Sens (25ºC) Continuous-Time Ratiometric Characteristic Definitions Ratiometric. The A1301 and A1302 feature a ratiometric output. This means that the quiescent voltage output equals one OUTQ and the magnetic sensitivity, Sens, are proportional to the supply voltage Due to internal A The ratiometric change (%) in the quiescent voltage output is ...

Page 5

... A1301 and A1302 1301 Device Sensitivity vs. Ambient Temperature 2.65 2.60 UA Package 2.55 2.50 LH Package 2.45 2.40 2.35 –50 – Temperature (°C) 1301 Device V vs. Ambient Temperature OUTQ 2.60 2.55 2.50 2.45 2.40 –50 – Temperature (°C) 1301 Device Sensitivity vs. Supply Voltage 3 ...

Page 6

... A1301 and A1302 1301 Device V OUTQ 3.5 3.0 2.5 2.0 1.5 4.5 5.0 Supply Voltage (V) 1301 Device LIN+ and LIN– vs. Supply Voltage 100.4 100.3 LIN– 100.2 100.1 100.0 LIN+ 99.9 99.8 4.5 5.0 Supply Voltage (V) 1301 Device Symmetry vs. Supply Voltage 100 ...

Page 7

... A1301 and A1302 Preliminary dimensions, for reference only Dimensions in millimeters U.S. Customary dimensions (in.) in brackets, for reference only (reference JEDEC TO-236 AB, except case width and terminal tip-to-tip) Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact case and lead configuration at supplier discretion within limits shown ...

Page 8

... A1301 and A1302 .122 .117 The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail spec tions as may be required to permit improvements in the per for mance, reliability, or manufacturability of its products ...

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