TMR
Current Sensor Evaluation Boards
Three Boards
Three new TMR current sensor evaluation boards let you easily evaluate a wide
range of noncontact current sensing:
Better Than Shunts
The current-over-trace configuration provides inherent isolation and is more efficient
than a shunt.
Simple Connections
The evaluation boards have a sensor, plus screw terminals for current connections,
a standard 0.1-inch header for sensor connections, and a 1 mm pitch card-edge
connector.
Succinct Documentation
The boards come with business-card size guides with pinouts and specifications.
Revolutionary Sensor
The boards are based on the revolutionary ALT023-10E
TMR magnetometer, which is ideal for noncontact current sensing:
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Ultrasensitive
The ALT023 is an order of magnitude more sensitive than GMR or Hall effect, with
a remarkable 200 mV/V/mT sensitivity. That translates to one to two volts
at full-scale current on a 3.3 or 5 volt supply. The sensors can directly
interface to analog front ends or microprocessor analog inputs. The ±1 mT
linear range is ideal for noncontact current sensing.
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| • |
High Linearity
With a typical linearity of 0.2%, the ALT023 provides a precise output.
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Ultraminiature/Low Pin Count
The ALT023 is a TMR bridge sensors that uses just four pins for power and a differential
output. The sensor comes in an ultraminiature 2.5 x 2.5 mm DFN. |
Download
the ALT023-10 Datasheet »
Boards in Stock
All three boards are in stock
for immediate delivery:
Evaluation Board
(click for more information) |
Configuration |
Sensing
Range |
Isolation |
| ALT023-10E-EVB02 |
5
traces on inner-1 layer |
0
to 1 A |
>2500
V |
| ALT023-10E-EVB03 |
Trace
on inner-1 layer |
0
to 7 A |
>2500
V |
| ALT023-10E-EVB04 |
Trace on bottom of board |
0 to 50
A |
>10
kV |
Demonstration Video
This video shows “bright” applications for noncontact TMR current sensing using all three boards:
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