Appendix
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Electrical Offset: The inherent imbalance of the bridge expressed in differential voltage output.
RBP: Reverse Battery Protection.
Definitions and Conversion Factors
Definitions:
CSK or Sink: Current sinking output, also referred to as Open Collector output.
Differential: The field difference between the Operate Point and the Release Point.
HBM: Human Body Model for ESD specifications.
Hysteresis: The maximum deviation in volts
between the output with increasing field and the output
with decreasing field, where the applied field is unipolar (applied in either a positive or negative
direction, without crossing the zero field point), divided by Voltage Span. Expressed as a percentage.
Input Voltage Range: The vol
tage range that can be applie
d across the bridge.
IOL (Current Output Low): The output current in the lo
w (logic 0) state (output stage switched on).
Max Output: A specification given in
millivolts per applied voltage. This is the maximum output
voltage possible. This output condition is achieved when one set of resistors is in magnetic saturation
(have achieved the maximum resistance change possible) while the other pair are at zero applied
magnetic field.
Nonlinearity:
The maximum deviation from a li
near fit taken over the Field Range divided by the
Voltage Span. Expressed as a percentage.
Off-axis Characteristic: A specification that describes the variation in sensor output versus the angle
b
etween the app
lied field direction and the sensitive axis of the GMR sensor with constant electrical
and magnetic inputs applied. Applicable to non-integrated bridge sensors. The output will vary as the
cosine of the angle rotated.
Operate Point: The fi
eld level which produces a logi
cal change in state from “0” to “1” in NVE’s
digital magnetic field sensors ADXXX-XX.
Operating Frequency: Frequency range wi
thin which a sensor wi
ll produce a responsive output.
Output Leakage Current (Current Output High): The output current in the high (l
ogic 1) state
(output stage switched off).
Output Saturation Voltage (Voltage Output Low): The out
put voltage in th
e low (logic 0) state
(output stage switched on).
Release Point: The fi
eld level which produces a
logical change in state from “1” to “0” in NVE’s
digital magnetic field sensors ADXXX-XX.
Resistor Separation:
This is the mean separation
between the two pairs of resistors, in a Gradiometer
or Differential sensor.
Sensitivity: A measure of t
he output magnitude based on elect
rical and magnetic input conditions.
Expressed in millivolts of differential output per applied voltage per Oersted.
