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BA010 GMR Medical Device Sensors
BA010 Wheatstone bridge analog output medical device sensors
offer high sensitivity in a very small die.
Magnetic, Resistance and Size Characteristics:
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Part Number
|
Linear Range
(|Oe1|)
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Sensitivity
(mV/V-Oe1)
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Saturation
Field (|Oe1|)
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Resistance
(Ohms)
|
Die size3
(µm)
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Die
Thickness
(µm)
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Package
|
|
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Min.
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Max.
|
Min.
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Max.
|
|
|
|
|
|
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BA010-01
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1.5
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10.5
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3.0
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4.2
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15
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5000±20
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436x3370
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200±25
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DICE
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Electrical and Temperature Characteristics:
|
Property
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Min
|
Typical
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Max
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Unit
|
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Input Voltage Range
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>14
|
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±254
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Volts
|
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Operating Frequency
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DC
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>1
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MHz
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Operating Temperature Range
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-50
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125
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°C
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Bridge Electrical Offset
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-4
|
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+4
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mV/V
|
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Signal Output at Max. Field
|
|
60
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mV/V
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Nonlinearity
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|
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2
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%(unipoloar)5
|
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Hysteresis
|
|
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4
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%(unipoloar)5
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TCR
|
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+0.14
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%/°C6
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TCOI
|
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+0.03
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%/°C6
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TCOV
|
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-0.1
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%/°C6
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Off-Axis Characteristic
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Cosβ7
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|
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ESD Tolerance
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400
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V pin to pin HBM
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Notes:
1. One Oersted (Oe) = 1 Gauss in air.
2. Unipolar operation means exposure to magnetic fields
of one polarity, for example 0 to +30 Gauss, or -2 to
-50 Gauss. Bipolar operation (for example -5 to +10
Gauss) increases nonlinearity and hysteresis.
3. BA-Series GMR sensors are pure ratiometric devices,
thus operating at extremely low supply voltages. The
output signal will be proportional to the supply voltage.
Maximum voltage is limited by package power dissipation
and maximum operating temperature.
4. Unipolar operation means exposure to magnetic fields
of one polarity, e.g., 0 to 30 Gauss, or -2 to
-20 Gauss, but not -20 to +30 Gauss (bipolar operation).
Bipolar operation will increase nonlinearity and hysteresis.
5. TCR is resistance change over temperature with no
applied field. TCOI is the output change over temperature
with a constant current source powering the sensor.
TCOV is the output change over temperature with a constant
voltage source powering the sensor.
6. Beta (β) is any angle from the sensitive axis.
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