The CT310 is a 2D angle sensor in a dual full-bridge configuration

fromAllegro developed on its patented XtremeSense™ 2D tunnel

magnetoresistance (TMR) technology. The operating magnetic

field for this 2D sensor is 250 to 900 G and has an angle error

less than 0.60° over temperature following a one-time offset,

gain, and phase compensation. The sensitive axes of the TMR

elements are orthogonal to each other, providing a 90° phase

separation between the sine and cosine outputs when measured

differentially. This phase separation is inherently independent

of magnet pole spacing and air gap.

The CT310 is available in an 8-lead TSSOP package, and for

space-critical applications, a low-profile and small form factor

8-lead DFN package that is 2.00 mm × 2.00 mm × 0.45 mm

in size. The packages are RoHS compliant and lead (Pb) free

with a 100% matte-tin-plated leadframe.

CT310-DS, Rev. 1

MCO-0001517

• Angle error less than 0.60° (after one-time compensation)

over full temperature range

• Dual full-bridge resistor network

• Operating magnetic field: 250 to 900 G

• Differential outputs for SIN and COS axes

• Supply voltage: 1.0 to 5.5 V

• AEC-Q100 Grade 1

XtremeSense™ 2D TMR Angle Sensor

Not to scale

CT310

FEATURES AND BENEFITS

DESCRIPTION

April 24, 2024

• Angular measurements

• Rotary and angular sensors

• BLDC motors

APPLICATIONS

FUNCTIONAL BLOCK DIAGRAM

Figure 1: CT310 Functional Block Diagram

R

R

R

R

R

R

R

R

5

7

8

4

6

2

3

1

COS2

COS1

SIN2

SIN1

VCOS

VSIN

GND

GND

PACKAGES

8-Lead DFN

8-Lead TSSOP