Codificador magnético de precisión de alta velocidad MT6816, módulo de Sensor de medición de posición de ángulo de inducción, placa de evaluación de prueba MT6701CT

The MT6816 magnetic encoder chip is a new-generation high-speed, high-precision angle encoder chip. It is primarily used in brushless DC motor control, servo motor control, and closed-loop stepper motor control. Because the chip only responds to changes in the direction of a magnetic field parallel to the chip surface, the MT6816 has low tolerances for machining errors in the magnet itself and the distance between the magnet and the chip.

The MT6816 has a wide operating temperature range, operating from -40°C to 125°C, significantly broadening its application scenarios. The MT6816 provides an incremental ABZ output interface to replace traditional photoelectric encoders, with a maximum resolution of 1024 pulses/revolution or 4096 steps/revolution. It also provides incremental UVW signals, programmable from 1 to 16 pole pairs, to replace Hall effects.

The MT6816 provides a 3-wire or 4-wire SPI interface for a host computer or MCU to read the chip's internal 14-bit absolute angle value. A single-wire PWM output also provides 12-bit absolute angle data.

Features and Benefits

Based on advanced AMR anisotropic magnetoresistive technology, it provides 0-360° absolute angle position detection.

Outputs 14-bit absolute angle data resolution.

Supports speeds up to 25,000 RPM.

System latency for angle output is 2 µs.

Operates in a temperature range of -40°C to 125°C.

Supports incremental ABZ, incremental UVW, PWM absolute value, and SPI bus outputs.

Incremental ABZ outputs support 1 to 1024 pulses/revolution, with user-programmable integer resolution.

Incremental UVW outputs support 1 to 16 pole pairs, with user-programmable integer pole pairs.

AECQ-100 certified.

Applications

Absolute angle position sensor

Brushless DC motor control

Servo motor control

Closed-loop stepper motor control

Replaces some photoelectric encoder applications.

JX-134 Product Description:

MT6701 chip features

1. Operating voltage: 3.3V to 5.0V, built-in EEPROM (VDD 4.5V must be ensured during burning);

2. Independent output interfaces: I2C, SSI, ABZ, UVW, analog voltage, PWM and Z-axis press detection;

3. Supports high rotational speed of 55,000 revolutions per minute;

4. Hall technology-based: Detection of angular positions from 0 to 360°;

Main chip model: MT6701CT-AAD

IIC Communications:

The JP1 interface is an IIC communication interface.

When communicating with IIC, the VDD and Z short circuits of JP2 need to be raised.

ABZ Newsletter:

JP2 is the ABZ communication port. By default, AB=256 and Z=4.

Note: The MODE of JP1 needs to be short-circuited and grounded to GND.

PWM output:

JP3 is a PWM output, and the default PWM frequency is: 994.4.

The MODE and GND of JP1 need to be short-circuited and lowered.

SSI communication:

JP2 can achieve SSI communication. The wiring is as follows:

Z connects to CSN

BConnect to CLK

AConnect to DO

MODE is short-circuited with VDD

XJX-135 Product Description:

MT6816 chip features

MT6816 is the third-generation magnetic Angle encoder chip launched by MagnTek. It achieves absolute Angle measurement from 0 to 360° based on anisotropic magnetoresistance (AMR) technology and proprietary signal processing technology. This chip consists of a pair of AMR Wheatstone Bridges and a signal processing ASIC circuit. As the magnetic field parallel to the chip surface rotates, the chip will output the corresponding encoded Angle signal, with a signal delay as low as within 2us. Meanwhile, users can also read the Angle data calculated internally by the chip through the high-speed SPI interface.

Compared with traditional Hall sensors, AMR Angle sensors operate in the saturation zone, reducing the requirement for magnetic fields and making installation easier for customers. MT6816 is available in SOP-8 packaging and is widely applicable to various consumer and industrial fields such as motor position feedback control and rotation control.

Main chip model:MT6816CT-ACD

ABZ Newsletter:

The JP1 interface is an ABZ communication interface. By default, AB=1024 and Z=4.

When communicating with ABZ, if MTP programming is not required, the HVPP pin needs to be short-circuited to GND.

SPI communication:

JP2 is a four-wire SPI communication port, through which MTP programming of the chip can be carried out.

PWM output:

JP3 is a PWM output, and the default PWM frequency is: 971.

UVW communication:

The W/Z, V/B, and U/A pins are multiplexed and cannot be used simultaneously.