Low-footprint, low-disruption current sensing

Zetex has introduced the ZXCT1080 current monitor to simplify high-side current sensing in high-voltage circuit-protection applications.

Key benefits of the ZXCT1080 include easier circuit design and reduced component count, made possible by an extended common-mode sensing range of 3V to 60V and an integrated gain-setting resistor. By producing a voltage output, the ZXCT1080 is easy to use and avoids disrupting the ground plane when taking current measurements.

As a further benefit, the low typical quiescent current of 80µA not only reduces overall power consumption but also reduces measurement error associated with input sense current.

The ZXCT1080’s 4.5V to 12V supply voltage allows close matching of its ground-referenced output voltage with ADCs and microcontrollers, and is also protected against harmful over-voltage conditions.

 

FEATURES Differential sense-input voltage range: 0V to 0.15V Output-voltage range: 0V to 1.5V 145µA maximum current draw SOT23-5 package

APPLICATIONS Precision current measurement Over-current monitoring Battery-management systems Power control

 

 

 

• Fairchild’s Green FPS™ power switch, page 080302

 

Zetex Semiconductors/ZXCT1080