ZXCT1082/83/84/85/86/87

ZXCT1082/83/84/85/86/87

Document number: DS32162 Rev. 1 - 2

1 of 13

www.diodes.com

May 2010

© Diodes Incorporated

A Product Line of

Diodes Incorporated

PRECISION HIGH VOLTAGE HIGH-SIDE CURRENT MONITORS

Description

The ZXCT1082 and ZXCT1083 are high side unipolar current

sense monitors. These devices eliminate the need to disrupt

the ground plane when sensing a load current.

The ZXCT1082/1084/1086 have 60V maximum operating

voltage and ZXCT1083/1085/1087 have 40V maximum

operating voltage.

The wide common-mode input voltage range and low

quiescent currents coupled with SOT25 packages make them

suitable for a range of applications; including automotive and

systems operating from industrial 24-28V rails.

Their quiescent current is only 0.6µA thereby minimizing

current sensing error.

The

ZXCT1082

and

ZXCT1083

use

three

external

transconductance/gain

setting

resistors

which

increase

versatility by permitting wide gain ranges and optimization of

bandwidths.

The

ZXCT1084/5/6/7

are

fixed

gain

voltage

output

counterparts of the ZXCT1082/3.

Pin Assignments

Typical Application Circuits

Features

•

Wide supply and common-mode voltage range

o

2.7V to 60V

ZXCT1082/84/86

o

2.7V to 40V

ZXCT1083/85/87

•

Independent supply and input common-mode voltage

•

Low quiescent current (0.6µA).

•

Extended industrial temperate range -40 to 125°C

•

Package SOT25

Applications

•

Automotive current measurement

•

Industrial applications current measurement

•

Battery management

•

Over current monitor

•

Power Management

•

Current sources

 

1

2

34

5

V

CC

S-

OUT

GND

S+

S+

S-

R

SENSE

V

CC

V

SUPPLY

Load

V

LOAD

GND

OUT

ZXCT1084/1085

ZXCT1086/1087

ZXCT1084/85:

V

ZXCT1086/87:

V

S+

S-

R

SENSE

V

CC

V

SUPPLY

R

GT

Load

R

GT

V

LOAD

GND

OUT

ZXCT1082/1083

R

G

ZXCT1082/83: V

R

GT