CSA-1V Ver la hoja de datos (PDF) - Unspecified
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CSA-1V Datasheet PDF : 5 Pages
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CSA-1V
August 2004
Typical Applications
Current Measurement A
The current conductor is situated above the chip.
A current conductor is placed at a certain
distance above or beyond the chip. The
magnetic field around a long current wire is
described by H=I/2πr. The flux density at
the place of the sensor depends upon the
current in the wire I and the distance
between sensor and wire r:
B= µ0*I/2 πr.
All examples for S=300V/T
Max
current
[A]
Distance
sensor to
wire [mm]
10
0.2
50
2
100
4
500
20
1000
40
Sensitivity
[mV/A]
120
25
12
3
1.5
Approx.
Resolution
(raw) [A]
0.1
0.5
1
3.5
7
Approx.
Resolution
(tINT=1ms)
[A]
0.01
0.05
0.1
0.35
0.7
Linearity
Error [%]
<0.1
Current Measurement B
The current conductor is situated below the chip (on PCB).
The CSA-1V current sensor is placed on a
PCB directly over the current track. The
current track can consist of one or several
loops, depending on the maximum current
to be measured. The sensor measures the
magnetic field emanating from the current
flowing through the tracks.
Typically obtained values for for this type of application are (width of PCB current track 2.5mm):
Max current(*) [A] No of tracks Sensitivity Resolution
DC / pulsed
under sensor [mV/A] (raw) [mA]
2 / 10
4
140
70
10 / 50
1
35
280
(*) max current depends on PCB properties/thermal budget
Resolution
tINT=1ms [mA]
7
28
Linearity
Error [%]
<0.1
Please contact us for documentation such as application notes, technical papers and others.
Page 5 of 5
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for North America: GMW Associates • Tel: +1 (650) 802-8292 • Fax: +1 (650) 802-8298 • sales@gmw.com
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