The CT110 is a high-linearity and high-resolution contact current

sensor with isolation that is designed with its patented state-of-

the-art XtremeSense™ TMR technology for high performance.

The device measures the current flowing through the DFN

package via its integrated current-carrying conductor (CCC) and

converts it to an analog ratiometric output voltage that represents

the current. The CT110 achieves superior performance with a

typical total output error of less than ±0.5% and is capable of

sensing current as low as 5 mA, providing unmatched resolution.

The device supports a wide operating voltage range of 2.7 to

5.5 V which allows it to be used in a variety of applications.

The CT110 is an ideal solution to replace a shunt resistor plus

isolation amplifier. At the same time, the CT110 simplifies

design, PCB layout, and saves PCB area. The device is capable

of supporting up to 15.0 A of AC and DC current.

The CT110 has a sampling frequency of 200 kHz but only has

minimal current consumption of 1.0 mA to bias it since the

measured current does not go through the device. Additionally,

the CT110 integrates a FLAG output that is active low and

will indicate when the field is above 90% and below 10% the

full field range.

The CT110 is available in a low-profile and small form factor

3.00 mm × 3.00 mm × 0.95 mm, 6-lead DFN package.

CT110-DS, Rev. 3

MCO-0001515

• Current range: ±5.0 A, ±10.0 A, ±15.0 A

• Resolution: 5 mA

• Total output error: <±0.5% (Typical)

• 2 kV isolation per IEC 62368-1

• Sampling frequency: 200 kHz

• Supply current: ~1.2 mA

• FLAG pin to detect 90% and 10% of full current range

□ Active low digital output (push-pull)

• Supply voltage: 2.7 to 5.5 V

• Operating temperature ranges:

□ Industrial: –40°C to 85°C

□ Extended Industrial: –40°C to 125°C

• Package: 6-lead DFN, 3.00 mm × 3.00 mm × 0.95 mm

XtremeSense™ High-Linearity, High-Resolution TMR Current Sensor

with FLAG Output in Miniature Form Factor

PACKAGE:

Not to scale

CT110

FEATURES AND BENEFITS

DESCRIPTION

November 2, 2023

• Shunt resistor plus

isolation amplifier

replacement

• Smart plugs/IoT devices

• LED lighting products

• Power tools

• Appliances

• Drones

• Battery charger systems

• PCs and servers

APPLICATIONS

Figure 1: CT110 with Analog and FLAG Outputs in DFN-6 Package Block Diagram

3

2

1

Isolation

Barrier

Analog

Front-End

State Machine

Analog

XtremeSense

TMR

Digital

(Push-pull)

4

GND

FLAG

ANA

VDD

6-lead DFN