BA010 GMR Medical Device Sensors
BA010 Wheatstone bridge analog output sensors for medical devices offer
high sensitivity in a very small die.
Magnetic, Resistance and Size Characteristics:
|
Part Number
|
Linear Range
(|Oe1|)
|
Sensitivity
(mV/V-Oe1)
|
Saturation
Field (|Oe1|)
|
Resistance
(Ohms)
|
Die size3
(µm)
|
Die
Thickness
(µm)
|
Package
|
|
|
Min.
|
Max.
|
Min.
|
Max.
|
|
|
|
|
|
|
BA010-01
|
1.5
|
10.5
|
3.0
|
4.2
|
15
|
5000±20%
|
436x3370
|
200±25
|
Bare Die
|
Electrical and Temperature Characteristics:
|
Property
|
Min.
|
Typ.
|
Max.
|
Unit
|
|
Input Voltage Range
|
>14
|
|
±254
|
Volts
|
|
Operating Frequency
|
DC
|
|
>1
|
MHz
|
|
Operating Temperature Range
|
-50
|
|
125
|
°C
|
|
Bridge Electrical Offset
|
-4
|
|
+4
|
mV/V
|
|
Signal Output at Maximum Field
|
|
60
|
|
mV/V
|
|
Nonlinearity
|
|
|
2
|
%(unipolar)5
|
|
Hysteresis
|
|
|
4
|
%(unipolar)5
|
|
TCR
|
|
+0.14
|
|
%/°C6
|
|
TCOI
|
|
+0.03
|
|
%/°C6
|
|
TCOV
|
|
-0.1
|
|
%/°C6
|
|
Off-Axis Characteristic
|
|
Cosβ7
|
|
|
|
ESD Tolerance
|
|
400
|
|
V pin to pin HBM
|
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 the angle from the axis of maximum sensitivity.
|
