The absolute position is reported through a serial-peripheral interface (SPI). The ADMT4000 counts up to 46 turns of an external magnetic field, incrementing the absolute position in the clockwise (CW) direction.
The device includes three magnetic sensors, a giant magneto resistance (GMR) turn count sensor, which is used to count the number of rotations on the system, a GMR quadrant detecting sensor, and an anisotropic magnetoresistive (AMR) angle sensor. The AMR angle sensor is used in combination with a GMR quadrant detecting sensor to determine the absolute position of the system within 360°. Combining the GMR turn count sensor output with the AMR angle sensor output enables the device to report the position of the system with a high degree of angular accuracy.
Product Highlights
- True Power-On multiturn counter
- Angle sensor with ±0.25°
- SPI interface
- Under and over voltage detection
Key Features and Benefits
- True Power-On multiturn counter
- 46-turn magnetic sensor
- >16k° digital output
- ±0.25° accuracy
- Measurement update rate 100 kSPS
- 16 mT to 31 mT operating range
- Internal temperature sensor
- IC supply, 3.3 V
- SPI interface, 1.8 V to 5 V
- Junction temperature range: -40°C to +150°C
- 24-pin TSSOP
Applications
- Industrial applications
Evaluation Board
The ADMT4000 can be evaluated with the EVAL-ADMT4000.
Block Diagrams and Tables
See related product
See related product
