In
This Issue
• Temperature-Stable
Sensors
• Application Corner
Ultra-Temperature-Stable
Analog Magnetic Sensors
 AA00x-Series
analog magnetometer sensors have always had best-in-class temperature stability.
Now they're new and improved. The output temperature coefficient, which was already
a best-in-class 0.1%/°C, is now 0.05%/°C.
The sensors are configured as inherently temperature-compensating Wheatstone bridges.
Features include:
• Magnetometer and gradiometer configurations
• 0.05%/°C output temperature coefficient (-40
to 125°C)
• Field ranges from <<0.1 mT to >45 mT
• Ultrasensitive and low-hysteresis versions
• Wheatstone bridge analog outputs
• Operation to near-zero voltage
• DFN6, MSOP8, and SOIC8 packages |
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Their stability makes
them an excellent choice for a variety of analog sensing applications including
position, speed, and current sensors.
 Breakout
Boards
0.8 x 0.4 inch (21 x 10 mm) breakout
boards with easy connections are available for most part types.
Demonstration Video
This video demonstrates the sensors' remarkable temperature stability:
Download the NEW
datasheet »
Application
Corner:
Constant Current Drive for Improved Magnetometer Temperature Stability
AAH00x-Series
Analog Magnetic Sensors have high-sensitivity, 150°C extended operating temperature,
and a fairly low temperature coefficient. The temperature coefficient is even
better driven with constant current rather than constant voltage.
Two simple circuits use an op-amp [left] or a voltage regulator [right]:
Demonstration Video
This video demonstrates the improved temperature stability of an AAH002
sensor driven with a simple constant current circuit using a voltage
regulator:
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