Product Overview
The CT310 is a 2D angle sensor utilizing Allegro's XtremeSense 2D tunnel magnetoresistance (TMR) technology. It features a dual full-bridge configuration, providing orthogonal sensitive axes for 90 phase separation between sine and cosine outputs. This inherent separation is independent of magnet pole spacing and air gap. The sensor offers high accuracy with an angle error less than 0.60 over temperature after one-time compensation. It is available in compact TSSOP and DFN packages, making it suitable for space-critical applications.
Product Attributes
- Brand: Allegro
- Technology: XtremeSense 2D TMR
- Configuration: Dual full-bridge
- Certifications: AEC-Q100 Grade 1, RoHS compliant, lead (Pb) free
- Package Lead Finish: 100% matte-tin-plated
Technical Specifications
| Feature | Specification | Details |
| Angle Error | < 0.60 | Over temperature, after one-time offset and gain compensation |
| Operating Magnetic Field | 250 to 900 G | |
| Outputs | Differential SIN and COS | 90 phase separation |
| Supply Voltage | 1.0 to 5.5 V | |
| Package Options | 8-lead TSSOP | |
| Package Options | 8-lead DFN | 2.00 mm 2.00 mm 0.45 mm |
| Part Number | CT310LS-AT8 | Operating Temp: -40 to 125C, Automotive Grade 1, Differential Output, 8-lead TSSOP, Tape and Reel |
| Part Number | CT310LS-FT8 | Operating Temp: -40 to 150C, Differential Output, Tape and Reel |
| Part Number | CT310LS-FD8 | Operating Temp: -40 to 150C, Differential Output, 8-lead DFN (2.00 mm 2.00 mm 0.45 mm), Tape and Reel |
| Bridge Resistance | 3.0 to 6.0 k | Typ. 4.5 k at TA = 25C |
| Differential Output Voltage Range | -1.37 to +1.37 V | |
| SIN, COS Differential Output Voltage Peak-to-Peak | 0.35 to 0.50 V/V | Typ. 0.45 V/V at TA = 25C |
| SIN, COS Voltage Offset | 1 to 5 mV/V | |
| SIN, COS Orthogonality Error | -2 to 2 | Deviation from ideal phase separation |
| Response Time | 1.0 s | CL = 22 pF |
| Noise (eN) | 2.4 VRMS/Hz | fBW = 1 Hz to 10 kHz, VDD = 3.0 V |
2408081048_ALLEGRO-CT310LS-ID8_C36458642.pdf
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