ZXCT1021(2004) View Datasheet(PDF) - Zetex => Diodes

Part Name

Description

Manufacturer

ZXCT1021
(Rev.:2004)

LOW OFFSET HIGH-SIDE CURRENT MONITOR

Zetex => Diodes 

ZXCT1021

Application Information

The devices have fixed dc voltage gains of 10, 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

The figure below 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 150mΩ using 1 oz copper. Smaller resistances can be used if required.

GND

Load

Total circuit solution: 1 component. Shows area of 150mΩ sense resistor

compared to SOT23 package.

Practical tolerance of the PCB resistor will be around 5% depending on

manufacturing methods.

PINOUT

N/C 1

GND 2

Vout 3

5 Load

4 Vin

Top view

PIN NAME PIN FUNCTION

N/C

Not internally connected

GND

Ground

Vout

Voltage output referenced to GND. Intended to

drive high impedance loads

Load

High impedance negative sense voltage input

Vin

Supply and positive sense voltage input

ISSUE 2 - MARCH 2004

5

SEMICONDUCTORS

Share Link: