*Patent Pending
MLX90215 Programmable Hall Effect Sensor
Rev 4.3
7/6/01
Page 1
MLX90215
Precision Programmable*
Linear Hall Effect Sensor
Description
The MLX90215 is a Programmable Linear Hall Effect
sensor
IC
fabricated
utilizing
silicon -CMOS
technology.
It
possesses
active
error
correction
circuitry which virtually eliminates the offset errors
normally associated with analog Hall Effect devices.
All magnetic response functions of the MLX90215 are
fully programmable for even greater versatility. The
VOQ (VOUT@ B=0), sensitivity, direction of slope and
the magnitude of sensitivity drift over temperature, are
all programmable.
The ratiometric output voltage is proportional to the
supply voltage. When using the supply voltage as a
reference for an A/D converter, fluctuations of +10%
in supply voltage will not affect accuracy. When
programmed for a conventional sensitivity (with a
positive gain), the voltage at the output will increase as
a South magnetic field is applied to the branded face of
the MLX90215. Conversely, the voltage output will
decrease in the presence of a North magnetic field. The
MLX90215 has a sensitivity drift of less than +1%
error, and VOQ stability drift of less than +0.4% error,
over a broad temperature range.
FunctionalDiagram
FeaturesandBenefits
•
Programmable Linear Hall IC
•
Quad Switched / Chopper Stabilized
•
Ratiometric Output for A/D Interface
•
Adjustable Quiescent Voltage (VOQ )
•
Very Low Quiescent Voltage Temperature Drift
•
Adjustable Sensitivity
•
Adjustable Temperature Compensation of Sensitivity
Applications
•
Linear Position Sensing
•
Rotary Position Sensing
•
Current Sensing
OrderingInformation
Part No.
Temperature Suffix
Package
Temperature Range
MLX90215
L
VA(4 Lead SIP)
-40°C to 150°C
MLX90215
E
VA(4 Lead SIP)
-40°C to 85°C
Chopper
Shift Register (RAM)
OTPROM (ROM)
Program
Decoder
1
3
V
DD
2
4
Hall Plate
Pin 1 - VDD (Supply)
Pin 2 - Test/Readback Enable
Pin 3 - VSS (Ground)
Pin 4 - Output
Note: Static sensitive device, please observe ESD precautions.
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