A1301 and A1302 Datasheet

A1301 and A1302
Continuous-Time Ratiometric Linear Hall Effect Sensor ICs
Not for New Design
These parts are in production but have been determined to be
NOT FOR NEW DESIGN. This classification indicates that sale of
this device is currently restricted to existing customer applications.
The device should not be purchased for new design applications
because obsolescence in the near future is probable. Samples are no
longer available.
Date of status change: December 1, 2015
Recommended Substitutions:
For existing customer transition, and for new customers or new applications, contact the factory.
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, LLC reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC. assumes no
responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
A1301 and A1302
Continuous-Time Ratiometric Linear Hall Effect Sensor ICs
DESCRIPTION
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
performance
• Robust ESD performance
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 circuit, a linear amplifier, and a CMOS Class A
output structure. Integrating the Hall circuit 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.
Packages:
3-Pin SOT23W (suffix LH)
3-Pin SIP (suffix UA)
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.
Not to scale
V+
To all subcircuits
Amp
Filter
VCC
Gain
Out
Offset
CBYPASS
Trim
Control
GND
Functional Block Diagram
A1301-DS, Rev. 21
VOUT
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
SPECIFICATIONS
Selection Guide
Packing*
Package
Ambient, TA
Bulk, 500 pieces/bag
SIP
–40ºC to 85ºC
A1301KLHLT-T
7-in. reel, 3000 pieces/reel
Surface Mount
A1301KLHLX-T
13-in. reel, 10000 pieces/reel
Surface Mount
Part Number
A1301EUA-T
A1301KUA-T
Bulk, 500 pieces/bag
SIP
A1302ELHLT-T
7-in. reel, 3000 pieces/reel
Surface Mount
A1302ELHLX-T
13-in. reel, 10000 pieces/reel
Surface Mount
A1302KLHLT-T
7-in. reel, 3000 pieces/reel
Surface Mount
A1302KLHLX-T
13-in. reel, 10000 pieces/reel
Surface Mount
A1302KUA-T
Bulk, 500 pieces/bag
SIP
Sensitivity (Typical)
2.5 mV/G
–40ºC to 125ºC
–40ºC to 85ºC
1.3 mV/G
–40ºC to 125ºC
*Contact Allegro™ for additional packing options.
Absolute Maximum Ratings
Characteristic
Symbol
Supply Voltage
Notes
VCC
Rating
Units
8
V
Output Voltage
VOUT
8
V
Reverse Supply Voltage
VRCC
–0.1
V
Reverse Output Voltage
VROUT
–0.1
V
IOUT
10
mA
Range E
–40 to 85
ºC
Range K
–40 to 125
ºC
Output Sink Current
Operating Ambient Temperature
TA
Maximum Junction Temperature
TJ(max)
165
ºC
Tstg
–65 to 170
ºC
Storage Temperature
3
1
2
Package LH SOT23W Pin-out Diagram
Terminal List
Symbol
VCC
VOUT
GND
Number
Package LH
Package UA
1
1
2
3
3
2
1
2
3
Package UA, 3-Pin SIP Pin-out Diagram
Description
Connects power supply to chip
Output from circuit
Ground
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
DEVICE CHARACTERISTICS over operating temperature range, TA, and VCC = 5 V, unless otherwise noted
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Electrical Characteristics
Supply Voltage
VCC
Running, TJ < 165°C
Supply Current
ICC
Output open
Output Voltage
Output Bandwidth
Power-On Time
Output Resistance
Wide Band Output Noise, rms
VOUT(High)
ISOURCE = –1 mA, Sens = nominal
VOUT(Low)
ISINK = 1 mA, Sens = nominal
BW
4.5
–
6
V
–
–
11
mA
4.65
4.7
–
V
–
0.2
0.25
V
–
20
–
kHz
VCC(min) to 0.95 VOUT; B = ±1400 G;
Slew rate = 4.5 V/µs to 4.5 V/100 ns
–
3
5
µs
ROUT
ISINK ≤ 1 mA, ISOURCE ≥ –1 mA
–
2
5
Ω
VOUTN
External output low pass filter ≤ 10 kHz;
Sens = nominal
–
150
–
µV
tPO
Ratiometry
Quiescent Output Voltage Error with
respect to ∆VCC1
ΔVOUTQ(V)
TA = 25°C
–
–
±3.0
%
Magnetic Sensitivity Error with
respect to ∆VCC2
ΔSens(V)
TA = 25°C
–
–
±3.0
%
Lin
TA = 25°C
–
–
±2.5
%
Sym
TA = 25°C
–
–
±3.0
%
B = 0 G; TA = 25°C
2.4
2.5
2.6
V
B=0G
2.2
–
2.8
V
A1301; TA = 25°C
2.0
2.5
3.0
mV/G
A1302; TA = 25°C
1.0
1.3
1.6
mV/G
A1301
1.8
–
3.2
mV/G
A1302
0.85
–
1.75
mV/G
Output
Linearity
Symmetry
Magnetic Characteristics
Quiescent Output Voltage
Quiescent Output Voltage over
Operating Temperature Range
Magnetic Sensitivity
Magnetic Sensitivity over Operating
Temperature Range
VOUTQ
VOUTQ(ΔTA)
Sens
Sens(ΔTA)
1Refer
to equation (4) in Ratiometric section on page 4.
2Refer to equation (5) in Ratiometric section on page 4.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
CHARACTERISTIC DEFINITIONS
Quiescent Output Voltage
Ratiometric
In the quiescent state (no significant magnetic field: B = 0),
the output, VOUTQ, equals one half of the supply voltage, VCC,
throughout the entire operating ranges of VCC and ambient
temperature, TA. Due to internal component tolerances and thermal considerations, there is a tolerance on the quiescent output
voltage, ∆VOUTQ, which is a function of both ∆VCC and ∆TA. For
purposes of specification, the quiescent output voltage as a function of temperature, ∆VOUTQ(∆TA), is defined as:
The A1301 and A1302 feature a ratiometric output. This means
that the quiescent voltage output, VOUTQ, and the magnetic sensitivity, Sens, are proportional to the supply voltage, VCC.
∆VOUTQ(∆ΤΑ) =
VOUTQ(ΤΑ) – VOUTQ(25ºC)
(1)
Sens(25ºC)
Sensitivity
The presence of a south-polarity (+B) magnetic field, perpendicular to the branded face of the device package, increases the
output voltage, VOUT, in proportion to the magnetic field applied,
from VOUTQ toward the VCC rail. Conversely, the application
of a north polarity (–B) magnetic field, in the same orientation,
proportionally decreases the output voltage from its quiescent
value. This proportionality is specified as the magnetic sensitivity of the device and is defined as:
VOUT(–B) – VOUT(+B)
2B
(2)
The stability of the device magnetic sensitivity as a function of
ambient temperature, ∆ Sens (∆TA) (%) is defined as:
∆Sens(∆ΤΑ) =
Sens(ΤΑ) – Sens(25ºC)
Sens(25ºC)
× 100%
∆VOUTQ(∆V) =
VOUTQ(VCC)
VCC
VOUTQ(5V)
5V
(4)
× 100%
and the ratiometric change (%) in sensitivity is defined as:
where Sens is in mV/G, and the result is the device equivalent
accuracy, in gauss (G), applicable over the entire operating temperature range.
Sens =
The ratiometric change (%) in the quiescent voltage output is
defined as:
(3)
∆Sens(∆V) =
Sens(VCC)
VCC
Sens(5V)
5V
× 100%
(5)
Linearity and Symmetry
The on-chip output stage is designed to provide linear output at
a supply voltage of 5 V. Although the application of very high
magnetic fields does not damage these devices, it does force
their output into a nonlinear region. Linearity in percent is measured and defined as:
Lin+ =
Lin– =
VOUT(+B) – VOUTQ
2 (VOUT(+B½) – VVOUTQ )
VOUT(–B) – VOUTQ
2(VOUT(–B½) – VOUTQ)
(6)
× 100%
× 100%
(7)
and output symmetry as:
Sym =
VOUT(+B) – VOUTQ
VOUTQ – VOUT(–B)
× 100%
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
(8)
4
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
TYPICAL CHARACTERISTICS
(30 pieces, 3 fabrication lots)
1301 Device Sensitivity vs. Ambient Temperature
1302 Device Sensitivity vs. Temperature
1.40
2.65
1.38
UA Package
Sensitivity (mV/G)
Sensitivity (mV/G)
2.60
2.55
2.50
LH Package
2.45
2.40
UA Package
1.36
1.34
1.32
1.30
LH Package
1.28
1.26
2.35
–50 –25
0
25
50
75
Temperature (°C)
1.24
100 125 150
-50
2.60
2.55
2.55
2.50
2.45
2.40
–50
–25
0
25
50
75 100
Temperature (°C)
125
0
25
50
75 100 125 150
Temperature (°C)
1302 Device VOUTQ vs. Ambient Temperature
2.60
Output Voltage (V)
Output Voltage (V)
1301 Device VOUTQ vs. Ambient Temperature
-25
2.50
2.45
2.40
–50
150
1301 Device Sensitivity vs. Supply Voltage
–25
0
25
50
75 100
Temperature (°C)
125
150
1302 Device Sensitivity vs. Supply Voltage
1.7
3.5
3.0
Sensitivity (mV/G)
Sensitivity (mV/G)
1.6
2.5
2.0
1.5
1.4
1.3
1.2
1.1
1.5
4.5
5.0
5.5
Supply Voltage (V)
6.0
1.0
4.5
5.0
5.5
Supply Voltage (V)
6.0
Continued on the next page...
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
TYPICAL CHARACTERISTICS CONTINUED
(30 pieces, 3 fabrication lots)
1302 Device VOUTQ vs. Supply Voltage
1301 Device VOUTQ vs. Supply Voltage
3.5
Output Voltage (V)
Output Voltage (V)
3.5
3.0
2.5
2.0
1.5
4.5
5.0
5.5
Supply Voltage (V)
3.0
2.5
2.0
1.5
4.5
6.0
5.0
5.5
Supply Voltage (V)
1302 Device LIN+ and LIN– vs. Supply Voltage
1301 Device LIN+ and LIN– vs. Supply Voltage
100.4
100.0
100.3
99.9
LIN–
Linearity (%)
Linearity (%)
100.2
100.1
100.0
6.0
LIN+
LIN+
99.8
LIN–
99.7
99.9
99.8
4.5
5.0
5.5
Supply Voltage (V)
99.6
4.5
6.0
100.0
100.5
99.9
99.8
100.4
100.3
99.7
99.6
100.2
100.1
Symmetry (%)
Symmetry (%)
6.0
1302 Device Symmetry vs. Supply Voltage
1301 Device Symmetry vs. Supply Voltage
99.5
99.4
99.3
99.2
99.1
99.0
4.5
5.0
5.5
Supply Voltage (V)
100.0
99.9
99.8
99.7
99.6
5.0
5.5
Supply Voltage (V)
6.0
99.5
4.5
5.0
5.5
Supply Voltage (V)
6.0
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
6
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
CUSTOMER OUTLINE DRAWINGS
For Reference Only – Not for Tooling Use
(Reference DWG-2840)
Dimensions in millimeters – NOT TO SCALE
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
+0.12
2.98 –0.08
D
1.49
4°±4°
A
3
0.180
+0.020
–0.053
0.96 D
+0.10
2.90
–0.20
1.91
+0.19
–0.06
2.40
0.70
D
0.25 MIN
1.00
2
1
0.55 REF
0.25 BSC
0.95
Seating Plane
B
Gauge Plane
8X 10° REF
PCB Layout Reference View
Branded Face
1.00 ±0.13
0.05
0.95 BSC
+0.10
–0.05
0.40 ±0.10
NNN
C
Standard Branding Reference View
N = Last three digits of device part number
A Active Area Depth, 0.28 mm
B Reference land pattern layout
All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
C Branding scale and appearance at supplier discretion
D Hall elements, not to scale
Figure 1: Package LH, 3-Pin; (SOT-23W)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
7
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
For Reference Only – Not for Tooling Use
(Reference DWG-9065)
Dimensions in millimeters – NOT TO SCALE
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
2 X 45°
B
+0.08
4.09
–0.05
1.52 ±0.05
E
2.04
C
3 X 10°
1.44 E
3.02
E
Mold Ejector
Pin Indent
+0.08
–0.05
45°
Branded
Face
1.02 MAX
0.51 MAX
A
0.79 REF
1
2
3
0.43
+0.05
–0.07
0.41
+0.03
–0.06
1.27 NOM
NNN
14.99 ±0.25
1
D
Standard Branding Reference View
= Supplier emblem
N = Last three digits of device part number
A
Dambar removal protrusion (6X)
B
Gate and tie bar burr area
C
Active Area Depth, 0.50 mm REF
D
Branding scale and appearance at supplier discretion
E
Hall element, not to scale
Figure 2: Package UA, 3-Pin SIP
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
8
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
Revision History
Revision
Revision Date
Description of Revision
18
April 26, 2013
Update UA package drawing
19
January 1, 2015
Add LX option to Selection Guide
20
July 13, 2015
Corrected LH package Active Area Depth value
21
December 1, 2015
Updated product status to “Not for New Design”
Copyright ©2005-2015, Allegro MicroSystems, LLC
Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to
permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that
the information being relied upon is current.
Allegro’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the
failure of that life support device or system, or to affect the safety or effectiveness of that device or system.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its
use; nor for any infringement of patents or other rights of third parties which may result from its use.
For the latest version of this document, visit our website:
www.allegromicro.com
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
9
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