MLX90215
Position Programmable Linear Hall Effect Sensor
4. Functional Diagram
VDD
OTPROM (ROM)
2
Shift Register (RAM)
1
Program
Decoder
+
Hall Plate
Chopper
-
4
3
5. 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.
REVISION 009 - AUGUST 21, 2017
3901090215
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