Allegro A3516LUA-TL, A3516LUA, A3516EUA-TL, A3516EUA, A3515LUA-TL Datasheet
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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 (508) 853-5000
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 (508) 853-5000
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.
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