AS5030 Datasheet Text
AS5030
8-Bit Programmable High Speed Magnetic Rotary Encoder
1 General Description
The AS5030 is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360°. It is a system-on-chip, bining integrated Hall elements, analog front end and digital signal processing in a single device.
To measure the angle, only a simple two-pole magnet, rotating over the center of the chip is required.
The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 8 bit = 256 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal.
In addition to the angle information, the strength of the magnetic field is also available as a 6-bit code.
Data transmission can be configured for 1-wire (PWM), 2-wires (CLK, DIO) or 3-wires (CLK, DIO, CS).
A software programmable (OTP) zero position simplifies assembly as the zero position of the magnet does not need to be mechanically aligned.
A Power Down Mode together with fast startup- and measurement cycles allows for very low average power consumption and makes the AS5030 also suitable for battery operated equipment.
Figure 1. AS5030 Block Diagram
2 Key Features
- 360° contactless angular position encoding
- Two digital 8-bit absolute outputs:
- Serial interface
- Pulse width modulated (PWM) output
- User programmable zero position
- Direct measurement of magnetic field strength allows exact determination of vertical magnet distance
- Serial read-out of multiple interconnected AS5030 devices using daisy chain mode
- Wide magnetic field input range: 20 ~ 80mT
- Wide temperature range: -40°C to +125°C
- Small Pb-free package: TSSOP 16
3 Applications
The AS5030 is suitable for Contactless rotary position sensing, Rotary...
