MT6701 14-Bit Magnetic Angle Encoder Sensor Module
High-Precision Differential Hall Sensor, Ideal Upgrade from AS5600
The MT6701 is a 14bit absolute magnetic angle encoder that uses differential Hall sensing to provide highly accurate, noncontact angle measurements. It serves as a powerful upgrade over the AS5600, offering superior resolution, higher speed, and richer output interfaces for Arduino and other MCU projects.
14Bit Core Resolution Four times the precision of the 12-bit AS5600 for smoother control [citation:2]
Differential Hall Technology - Excellent immunity to external magnetic field interference [citation:1][citation:7]
Operating voltage is 3.3V to 5.0V with operating temperature -40°C to +125°C [citation:8]
To enable I2C mode, ensure the MODE pin is pulled HIGH (or left floating); keep the Z pin HIGH [citation:5]
While the MT6701 is highly robust, incorrect voltage levels may damage the sensor [citation:3]
Technical Specifications
| Parameter | Value |
|---|
| Core Resolution | 14-bit (absolute) [citation:1] |
| Output Resolution | 12-bit (Analog/PWM) [citation:2] |
| Accuracy (INL) | Typical ±1.0° [citation:2] |
| Communication | I2C, SSI, ABZ, UVW, Analog, PWM [citation:1][citation:12] |
| Max Speed | 55,000 RPM [citation:1] |
| System Latency | <5 µs [citation:1][citation:2] |
= Key Features =
UltraLow Latency <5 µs propagation delay for real-time control loops [citation:2]
HighSpeed Operation Supports up to 55,000 RPM for demanding applications [citation:8]
Flexible Output Interfaces - Choose from I2C, SSI, ABZ, UVW, PWM, or analog to fit your system [citation:1]
Integrated ZAxis Button Detects vertical press for "knob+button" functions [citation:1][citation:7]
Robust Communication SSI interface with 6bit CRC for data integrity in noisy environments [citation:1]
Programmable Outputs ABZ up to 1024 PPR, UVW 116 pole pairs [citation:1][citation:7]
= Applications =
- Brushless DC (BLDC) motor control for gimbals and drones [citation:1][citation:7]
- High-end HMI knobs and rotary encoders [citation:1][citation:2]
- Robotics and servo motor feedback [citation:3][citation:7]
- High-speed industrial automation [citation:2]
Direct Upgrade Path While AS5600 is a 12bit potentiometer replacement, MT6701 is a 14bit multiinterface encoder [citation:2]
Versatile and Powerful - One chip can replace potentiometers, optical encoders, and Hall sensors [citation:2][citation:7]
√ Supported by Arduino IDE with dedicated libraries [citation:6][citation:10]
√ Available in SOP8 (dropin replacement) and compact 3x3mm QFN packages [citation:2][citation:12]
√ Supports high-speed SSI and I2C for easy integration [citation:5]
Troubleshooting
Sensor not responding:
- Verify the MODE pin is set correctly for your output interface (e.g., HIGH for I2C) [citation:5]
- Ensure the Z pin is pulled HIGH for I2C operation [citation:5]
- Check supply voltage and I2C pull-up resistors [citation:3]
Inconsistent readings:
- Confirm the magnet is correctly aligned and within the 20-100mT field range [citation:1]
- Check for magnetic interference from nearby motors or components [citation:7]