ZXCT1021 View Datasheet(PDF) - Diodes Incorporated.
Part Name
Description
Manufacturer
ZXCT1021 Datasheet PDF : 8 Pages
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ZXCT1021
Application information
The ZXCT1021 has a fixed dc voltage gain of 100. No external scaling resistors are required for
the output. Output voltage is simply defined as:
VOUT = 10 x VSENSE (V)
Where VSENSE = VIN - VLOAD
PCB trace shunt resistor for low cost solution
Figure 1 shows a PCB layout suggestion for a low cost solution where a PCB resistive trace in
replacement for a conventional shunt resistor, can be used. The resistor section is 25mm x
0.25mm giving approximately 150m⍀ using 1 oz copper. Smaller resistances can be used if
required.
Total circuit solution: 1 component. Shows area of 150m⍀
sense resistor compared to SOT23 package.
ZXCT1021/2
Practical tolerance of the PCB resistor will be around 5%
depending on manufacturing methods.
GND
Load
VOUT VIN
Figure 1 PCB layout suggestion
Issue 9 - July 2007
6
© Zetex Semiconductors plc 2007
www.zetex.com
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