ZXCT1010E5TA View Datasheet(PDF) - Zetex => Diodes

Part Name

Description

Manufacturer

ZXCT1010E5TA

Enhanced high-side current monitor

Zetex => Diodes 

Bi-directional current sensing

The ZXCT1010 can be used to measure current bi-

directionally, if two devices are connected as shown

opposite.

If the voltage V1 is positive with respect to the voltage V2

the lower device will be active, delivering a proportional

output current to ROUT. Due to the polarity of the voltage

across Rsense, the upper device will be inactive and will not

contribute to the current delivered to ROUT. When V2 is more

positive than V1, current will be flowing in the opposite

direction, causing the upper device to be active instead.

Non-linearity will be apparent at small values of VSENSE due

to offset current contribution. Devices can use separate

output resistors if the current direction is to be monitored

independently.

ZXCT1010

Bi-directional transfer function

Bidirectional Transfer Function

5

4

3

2

1

0

-400 -200

0

200 400

Sense Voltage (mV)

Output Current v Sense Voltage

Issue 9 - July 2006

7

© Zetex Semiconductors plc 2006

www.zetex.com

Share Link: