Datasheet A3516LUA-TL, A3516LUA, A3516EUA-TL, A3516EUA, A3515LUA-TL Datasheet (Allegro)

The A3515– and A3516– are sensitive, temperature-stable linear Hall­effect sensors with greatly improved offset characteristics. Ratiometric, linear
Hall-effect sensors provide a voltage output that is proportional to the applied
magnetic field and have a quiescent output voltage that is approximately 50%
of the supply voltage. These magnetic sensors are ideal for use in linear and
rotary position sensing systems in the harsh environments of automotive and
industrial applications over extended temperatures to -40°C and +150°C. The
A3515– features an output sensitivity of 5 mV/G, while the A3516– has an
output sensitivity of 2.5 mV/G. See the Magnetic Characteristics table for
complete, individual device parametrics.

Each BiCMOS monolithic circuit integrates a Hall element, improved
temperature-compensating circuitry to reduce the intrinsic sensitivity drift of
the Hall element, a small-signal high-gain amplifier, and a rail-to-rail low­impedance output stage.

A proprietary dynamic offset cancelation technique, with an internal
high-frequency clock, reduces the residual offset voltage, which is normally
caused by device overmolding, temperature dependancies, and thermal stress.
This technique produces devices that have an extremely stable quiescent
output voltage, are immune to mechanical stress, and have precise recover­ability after temperature cycling. Many problems normally associated with
low-level analog signals are minimized by having the Hall element and
amplifier in a single chip. Output precision is obtained by internal gain and
offset trim adjustments during the manufacturing process.

These devices are supplied in a 3-pin ultra-mini-SIP ‘UA’ package.

FEATURES

■ Temperature-Stable Quiescent Output Voltage

■ Precise Recoverability After Temperature Cycling

■ Output Voltage Proportional to Applied Magnetic Field

■ Ratiometric Rail-to-Rail Output

■ Improved Sensitivity

■ 4.5 V to 5.5 V Operation

■ Immune to Mechanical Stress

■ Small Package Size

■ Solid-State Reliability

RATIOMETRIC, LINEAR HALL-EFFECT SENSORS

FOR HIGH-TEMPERATURE OPERATION

Data Sheet

27501.10B*

3515

AND

3516

Always order by complete part number, e.g., A3515LUA .

Pinning is shown viewed from branded side.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, VCC.............................. 8.0 V

Output Voltage, VO................................ 8.0 V

Output Sink Current, IO....................... 10 mA

Magnetic Flux Density, B .............. Unlimited

Package Power Dissipation,

PD........................................... See Graph

Operating Temperature Range*, T

A

Suffix ‘E–’ ..................... -40°C to +85°C

Suffix ‘L–’ .................... -40°C to +150°C

Storage Temperature Range,

TS.................................. -65°C to +170°C

* Infrequent excursions permitted; see

Applications Information.

Dwg. PH-006

1

SUPPLY

V

CC

GROUND

32

OUTPUT

X

3515

AND

3516

RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

2

Dwg. FH-016A

GROUND

2

OUTPUT

3

1

X

DYNAMIC

OFFSET CANCELLATION

LOW-PASS

FILTER

–

+

–

+

SUPPLY

Vcc

Vcc/2

600

400

200

20 60 100

140

0

AMBIENT TEMPERATURE in °C

ALLOWABLE PACKAGE POWER DISSIPATION in MILLIWATTS

Dwg. GH-046A

"U" PACKAGE
R

θJA

= 183°C/W

"UA" PACKAGE
R

θJA

= 206°C/W

40 80 120 160

700

500

300

100

Copyright © 1996, 2000 Allegro MicroSystems, Inc.

FUNCTIONAL BLOCK DIAGRAM

3515

AND

3516

RATIOMETRIC,

LINEAR

HALL-EFFECT SENSORS

www.allegromicro.com

3

ELECTRICAL CHARACTERISTICS over operating temperature range, at VCC = 5 V (unless
otherwise noted).

Limits

Characteristic Symbol Test Conditions Min. Typ. Max. Units

Supply Voltage V

CC

Operating 4.5 5.0 5.5 V

Supply Current I

CC

B = 0, VCC = 6 V, IO = 0 – 7.2 10 mA

Quiescent V

OQ

B = 0, IO = 1 mA, TA = 25°C 2.425 2.500 2.575 V

Voltage Output

Output Voltage V

OH

B = +X*, IO = 1 mA – 4.7 – V

V

OL

B = -X*, IO = -1 mA – 0.2 – V

Output I

OLM

B = -X*, VO = 0 -1.0 -1.5 – mA

Source Current Limit

Bandwidth (-3 dB) BW – 30 – kHz

Clock Frequency f

C

–170–kHz

Output Resistance r

O

IO ≤ -2 mA – 1.0 – Ω

Wide-Band e

o

B = 0, BW = 10 Hz to 10 kHz, – 400 – µV

Output Noise (rms) IO ≤ -1 mA, CO = 100 pF

NOTE 1 – Typical data is at TA = 25°C and is for design information only.

NOTE 2 – Negative current is defined as coming out of (sourcing) the output.

* This test requires positive and negative fields sufficient to swing the output driver between fully OFF and saturated (ON), respec­tively. It is NOT intended to indicate a range of linear operation.

3515

AND

3516

RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

4

MAGNETIC CHARACTERISTICS over operating temperature range, at VCC = 5 V, IO = -1 mA
(unless otherwise noted).

Part Numbers

A3515EUA A3515LUA A3516EUA A3516LUA

Characteristic* Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Units

Operating Temp. Range, T

A

-40 – +85 -40 – +150 -40 – +85 -40 – +150 °C

Sensitivity at TA = 25°C 4.50 5.00 5.50 4.50 5.00 5.50 2.25 2.50 2.75 2.25 2.50 2.75 mV/G

∆Sens

(∆T)

at TA = Max. -2.5 2.5 7.5 -2.5 2.5 7.5 -2.5 2.5 7.5 -2.5 2.5 7.5 %

∆Sens

(∆T)

at TA = Min. -9.0 -1.3 1.0 -9.0 -1.3 1.0 -9.0 -1.3 1.0 -9.0 -1.3 1.0 %

∆V

OQ(∆T)

†

––±10 – – ±10 – – ±10 – – ±10 G

Ratiometry, ∆V

OQ(∆V)

– 100 – – 100 – – 100 – – 100 – %

Ratiometry, ∆Sens

(∆V)

– 100 – – 100 – – 100 – – 100 – %

Positive Linearity, Lin+ – 100 – – 100 – – 100 – – 100 – %

Negative Linearity, Lin– – 100 – – 100 – – 100 – – 100 – %

Symmetry – 100 – – 100 – – 100 – – 100 – %

NOTE 1 – Magnetic flux density is measured at most sensitive area of device located 0.018" (0.46 mm) below the branded face of
the “UA” package.

NOTE 2 – 10 G = 1 mT, exactly.

NOTE 3 – Except for ∆Sens

(∆T)

, typical data is at TA = 25°C and is for design information only.

* See Characteristics Definitions for test conditions.

† This calculation (formula 1, next page) yields the device’s equivalent accuracy, over the operating temperature range, in gauss.

3515

AND

3516

RATIOMETRIC,

LINEAR

HALL-EFFECT SENSORS

www.allegromicro.com

5

Ratiometry. The A3515xUA and A3516xUA feature a
ratiometric output. The quiescent voltage output and sensitivity
are proportional to the supply voltage (ratiometric).

The per cent ratiometric change in the quiescent voltage

output is defined as

∆V

OQ(∆V)

=

V

OQ(VCC)

/ V

OQ(5V)

x 100% (4)

VCC / 5 V

and the per cent ratiometric change in sensitivity is defined as

∆Sens

(∆V)

=

Sens

(VCC)

/ Sens

(5V)

x 100% (5)

VCC / 5 V

Linearity and Symmetry. The on-chip output stage is de­signed to provide a linear output to within 500 mV of either rail
with a supply voltage of 5 V. This is equivalent to approxi­mately ±800 gauss of ambient field. Although application of
stronger magnetic fields will not damage these devices, it will
force the output into a non-linear region. Linearity in per cent
is measured and defined as

Lin+ =

V

O(500G)

– VOQ

x 100% (6)

2 (V

O(250G)

– VOQ)

Lin– =

V

O(-500G)

– VOQ

x 100% (7)

2 (V

O(-250G)

– VOQ)

and output symmetry as

Sym =

V

O(500G)

– VOQ

x 100% (8)

VOQ – V

O(-500G)

CHARACTERISTICS DEFINITIONS

Quiescent Voltage Output. In the quiescent state (no mag­netic field), the output is ideally equal to one-half of the supply
voltage over the operating voltage and temperature range (V

OQ

∪ VCC/2). Due to internal component tolerances and thermal
considerations, there is a tolerance on the quiescent voltage
output and on the quiescent voltage output as a function of
supply voltage and ambient temperature. For purposes of
specification, the quiescent voltage output as a function of
temperature is defined as

∆V

OQ(∆T)

=

V

OQ(TA)

– V

OQ(25°C)

(1)

Sens

(25°C)

This calculation yields the device’s equivalent accuracy,

over the operating temperature range, in gauss.

Sensitivity. The presence of a south-pole magnetic field
perpendicular to the package face (the branded surface) will
increase the output voltage from its quiescent value toward the
supply voltage rail by an amount proportional to the magnetic
field applied. Conversely, the application of a north pole will
decrease the output voltage from its quiescent value. This
proportionality is specified as the sensitivity of the device and
is defined as

Sens =

V

O(500G)

– V

O(-500G)

(2)

1000 G

The stability of sensitivity as a function of temperature is

defined as

∆Sens

(∆T)

=

Sens

(TA)

– Sens

(25°C)

x 100% (3)

Sens

(25°C)

3515

AND

3516

RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

6

TYPICAL CHARACTERISTICS

0 25 50 75

100

AMBIENT TEMPERATURE IN °C

-50

Dwg. GH-039-2

125

-25

SUPPLY CURRENT IN mA

9.0

8.0

7.0

6.0

150

Vcc = 5.5 V

0 25 50 75

100

1.4

0.4

AMBIENT TEMPERATURE IN °C

1.2

0.8

-50

Dwg. GH-060-1

OUTPUT RESISTANCE IN Ω

150

-25

125

1.0

0.6

Vcc = 5 V

I

O

=

-1

m

A

I

O

=

1

m

A

I

O

=

5

m

A

I

O

= 10 mA

0 25 50 75

100

AMBIENT TEMPERATURE IN °C

2.55

2.45

-50

Dwg. GH-067

QUIESCENT OUTPUT VOLTAGE IN VOLTS

150

-25

125

2.50

Vcc = 5 V

Io = -1 mA

A3516–

A3515–

2.46

2.47

2.48

2.49

2.51

2.52

2.53

2.54

0 25 50 75

100

6.0

1.0

AMBIENT TEMPERATURE IN °C

5.0

3.0

-50

Dwg. GH-066

SENSITIVITY IN mV/G

150

-25

125

4.0

2.0

A3516–

A3515–

Vcc = 5 V

Io = -1 mA

0

3515

AND

3516

RATIOMETRIC,

LINEAR

HALL-EFFECT SENSORS

www.allegromicro.com

7

Qualification Test Test Method and Test Conditions Test Length Samples Comments

Temperature Humidity JESD22-A101 1000 hrs 77 Device biased for
Bias Life TA = 85°C, RH = 85% minimum power

Bias Life JESD22-A108 1000 hrs 77

TA = 150°C, TJ = 165°C

(Surge Operating Life) JESD22-A108 168 hrs 77

TA = 175°C, TJ = 190°C

Autoclave, Unbiased JESD22-A102 96 hrs 77

TA = 121°C, 15 psig

High-Temperature JESD22-A103 1000 hrs 77
(Bake) Storage Life TA = 170°C

Temperature Cycle JESD22-A104 1000 cycles 77

ESD, CDF-AEC-Q100-002 Pre/Post 3 per Test to failure
Human Body Model Reading test All leads > 3 kV

All Allegro sensors are subjected to stringent qualification requirements prior to being released to production.

To become qualified, except for the destructive ESD tests, no failures are permitted.

CRITERIA FOR DEVICE QUALIFICATION

3515

AND

3516

RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

8

1 32

Dwg. MH-011-7

0.018"

0.46 mm
NOM

BRANDED
SURFACE

ACTIVE AREA DEPTH

0.081"

2.06 mm

0.056"

1.42 mm

A

SUFFIX “UA”

B ≈ N x 6.9 G/A

Dwg. AH-005A

TYPICAL CURRENT-SENSING APPLICATION

SENSOR LOCATION

APPLICATIONS INFORMATION

Calibrated linear Hall devices, which can be used to deter­mine the actual flux density presented to the sensor in a particu­lar application, are available.

For safe, reliable operation, the output should not be pulled
above the supply voltage or pulled below the device ground.

For optimum performance, a 0.1 µF capacitor between the
supply and ground, and a 100 pF capacitor between the output
and ground, should be added.

The ratiometric feature is especially valuable when these
devices are used with an analog-to-digital converter. A/D
converters typically derive their LSB step size by ratioing off a
reference voltage line. If the reference voltage varies, the LSB
will vary proportionally. This is a major error source in many
sensing systems. The A3515xUA and A3516xUA can eliminate
this source of error by their ratiometric operation. Because their
gain and offsets are proportional to the supply voltage, if they are
powered from the A/D reference voltage, the sensor output
voltage will track changes in the LSB value.

These devices can withstand infrequent temperature excur­sions, beyond the Absolute Maximum Ratings, to
T

A

= 170°C provided the junction temperature, TJ, does not

exceed 200°C.

Extensive applications information on Hall-effect sensors
and magnets is also available in the “Hall-Effect IC Applications
Guide”, which can be found in the latest issue of the Allegro

MicroSystems Electronic Data Book, AMS-702 or Application
Note 27701, or at

www.allegromicro.com

Allegro

3515

AND

3516

RATIOMETRIC,

LINEAR

HALL-EFFECT SENSORS

www.allegromicro.com

9

0

0

RELATIVE DISTANCE

RELATIVE MAGNETIC FLUX DENSITY

Dwg. GH-048

RELATIVE OUTPUT VOLTAGE

V

CC

V

OQ

-0.4 -0.2 0.2 0.4

+

GND

-

N S

D

0.19

0

0

RELATIVE DISTANCE (TOTAL EFFECTIVE AIR GAP)

RELATIVE MAGNETIC FLUX DENSITY

Dwg. GH-047

RELATIVE OUTPUT VOLTAGE

V

CC

V

OQ

N S

D

SENSOR DEPTH
BELOW PACKAGE FACE

0.1 0.2 0.3 0.4 0.5

+

0

0

RELATIVE DISTANCE

RELATIVE MAGNETIC FLUX DENSITY

Dwg. GH-050

RELATIVE OUTPUT VOLTAGE

V

CC

V

OQ

N S

0.05 0.10 0.15 0.20 0.25

+

D

EFFECTIVE

AIR GAP

0.21

EFFECTIVE AIR GAP = 0.050

EFFECTIVE AIR GAP = 0.075

EFFECTIVE AIR GAP = 0.095

0

0

RELATIVE DISTANCE

RELATIVE MAGNETIC FLUX DENSITY

Dwg. GH-049

RELATIVE OUTPUT VOLTAGE

V

CC

V

OQ

-0.06 -0.04 0.04 0.06 0.08

+

GND

-

-0.08

0.10

-0.10

N S
S N

N S
S N

D

0.21

D

0.19

S N

N S

TYPICAL POSITION-SENSING APPLICATIONS

(Alnico 8, dimensions in inches)

3515

AND

3516

RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

10

Dimensions in Inches

(controlling dimensions)

Dimensions in Millimeters

(for reference only)

Dwg. MH-014E in

0.164

0.159

0.062

0.058

0.0173

0.0138

0.050

BSC

45°

0.640

0.600

0.0189

0.0142

0.085

MAX

45°

0.031

123

0.122

0.117

SEE NOTE

Dwg. MH-014E mm

4.17

4.04

1.57

1.47

0.44

0.35

1.27

BSC

45°

16.26

15.24

0.48

0.36

2.16

MAX

45°

0.79

123

3.10

2.97

SEE NOTE

A3515xUA and A3516xUA

NOTES: 1. Tolerances on package height and width represent allowable mold offsets. Dimensions given are

measured at the widest point (parting line).

2. Exact body and lead configuration at vendor’s option within limits shown.

3. Height does not include mold gate flash.

4. Recommended minimum PWB hole diameter to clear transition area is 0.035" (0.89 mm).

5. Where no tolerance is specified, dimension is nominal.

6. Supplied in bulk pack (500 devices per bag).

3515

AND

3516

RATIOMETRIC,

LINEAR

HALL-EFFECT SENSORS

www.allegromicro.com

11

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 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 products are not authorized for use as critical components
in life-support appliances, devices, or systems without express written
approval.

The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no responsibil­ity for its use; nor for any infringements of patents or other rights of
third parties that may result from its use.

0.095

±0.005

0.020

MIN

FLAT

Dwg. MH-015 in

0.004

MAX

0.002

MAX

0°–8°

2.41

±0.13

0.51

MIN

FLAT

Dwg. MH-015 mm

0.10

MAX

0.051

MAX

0°–8°

Surface-Mount Lead Form (add ‘-TL’ to part number)

NOTE: Supplied in bulk pack (500 devices per bag).

Dimensions in Inches

(controlling dimensions)

Dimensions in Millimeters

(for reference only)

3515

AND

3516

RATIOMETRIC,
LINEAR
HALL-EFFECT SENSORS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

12

HALL-EFFECT SENSORS

Partial Part Avail. Oper. Characteristics at TA = +25°C
Number Temp. B

OP

max B

RP

min B

hys

typ Features Notes

RATIOMETRIC, LINEAR HALL-EFFECT SENSORS

3503 S typ. 1.3 mV/G
3507 E/L typ. 2.5 mV/G
3508 S typ. 2.5 mV/G
3515 E/L typ. 5.0 mV/G chopper stabilized
3516 E/L typ. 2.5 mV/G chopper stabilized
3517 L/S typ. 5.0 mV/G chopper stabilized
3518 L/S typ. 2.5 mV/G chopper stabilized

GEARTOOTH/RING MAGNET (DUAL ELEMENT) HALL-EFFECT SENSORS in order of B

OP

3060 K/S +35 -35 30 ac coupled
3422 E/L +75 -75 46 direction detection
3059 K/S [phone] ac coupled
3056 E/L [phone] zero-speed
3058 E/L [phone] zero-speed
3421 E/L [phone] direction detection

SPECIAL-PURPOSE HALL-EFFECT SENSORS

3054 K/S +300 +5.0 50 unipolar switch, multiplexed 4
3209 E ±60 ±5.0 7.7 400 µW, chopper stabilized
3210 E ±60 ±5.0 7.7 25 µW, chopper stabilized
3421 E/L [phone] direction detection
3422 E/L +85 -85 46 direction detection
3425 L +24 -24 19 dual, chopper stabilized 1

Operating Temperature Ranges:

S = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K = -40°C to +125°C, L = -40°C to +150°C

Notes 1. Protected.

4. Multiplexed two-wire sensor; after proper address, power/signal bus current indicates magnetic field condition.