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TMR
Current Sensor
Evaluation Boards |
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Three New Boards
We recently launched three new TMR current sensor evaluation boards to 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.
QR codes provide datasheet links.
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, with a remarkable
200 mV/V/mT sensitivity, which 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 |
Range |
Isolation |
| ALT023-10E-EVB02 |
5
traces on inner-1 layer |
0
– 1 A |
>2500
V |
| ALT023-10E-EVB03 |
Trace
on inner-1 layer |
0
– 7 A |
>2500
V |
| ALT023-10E-EVB04 |
Trace on
bottom of board |
0 – 50 A |
>10
kV |
Demonstration Video
This video “sheds some light” on noncontact TMR current sensing by demonstrating
all three boards:
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