www.zetex.com
Functional Description
The ZXCT1008 is a high-side current monitor The wide input voltage range of 2.5 to 20
designed to work in an automotive
environment. Using this device eliminates
volts, and -40 to 125ºC temperature range
makes the part suitable for a wide range of
the ground plane disruption when measuring applications.
a load current.
The ability to survive high forward and
A low value resistance in the supply line
develops a voltage which is translated to a
proportional output current to ground. This
current is then converted to a low-side
voltage by a resistor to ground. This resistor
can be selected to scale the output voltage
to give gain.
reverse voltage transients, and reverse
polarity connection, make the part very
suitable for automotive and industrial
applications.
Quiescent
current
(µA)
Bandwidth
MHz
Accuracy
@ Vsense
Description
Vin (V)
Package
2
ZXCT1008F
2.5 to 20
±2.5% at 100mV
4
SOT23
Applications Information
Rsense
Vin
To load
ZXCT
1008
Rlim
Vout
Rout
The data sheet contains information about the operation of the current monitor. It also
includes additional applications information on:
•
•
•
Selecting sense, limiting and output resistors
Operating in a high transient voltage environment.
Using a PCB trace as a low cost sense resistor
2
