AS5048A-HTSP-500

AS5048A/AS5048B Magnetic Rotary Encoder (14-bit Angular Position Sensor) The AS5048 is an easy to use 360 angle position sensor with a General Description 14-bit high resolution output. The maximum system accuracy is 0.05 assuming linearization and averaging is done by the external microcontroller. The IC measures the absolute position of the magnets rotation angle and consists of Hall sensors, analog digital converter and digital signal processing. The absolute position information of the magnet is directly accessible over a PWM output and can be read out over a standard SPI or a high speed IC interface. AS5048A has a SPI inter face, AS5048B IC inter face. Both devices offer a PWM output. The zero position can be programmed via SPI or IC command. This simplifies the assembly of the complete system because the zero position of the magnet does not need to be mechanically aligned. The sensor tolerates misalignment, air gap variations, temperature variations and as well external magnetic fields. This robustness and wide temperature range (-40C up to +150C) of the AS5048 makes the IC ideal for rotation angle sensing in harsh industrial and medical environments. Several AS5048 ICs can be connected in daisy chain for serial data read out. An internal voltage regulator allows the AS5048 to operate at either 3.3 V or 5 V supplies. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS5048A/AS5048B, Magnetic Rotary Encoder (14-bit Angular Position Sensor) are listed below: Figure 1: Added Value of using AS5048 Benefits Features No external programmer needed Contactless rotary position sensor over 360 High precision Immune to external magnetic stray fields Easy to use 14-bit resolution (0.0219/LSB) 2 Low material costs (no shielding) Standard SPI or I C interface and PWM 2 Zero position programmable via SPI or I C Temperature range: -40C to +150C ams Datasheet: 2014-Jun-05 v1-06 AS5048A/AS5048B 1Benefits Features 3.3V / 5V compliant Package: 14-pin TSSOP (5 x 6.4mm) Applications The applications of AS5048 include: Robotic joint position detection Industrial motor position control Medical robots and fitness equipment Block Diagram The functional blocks of this device for reference are shown below: Figure 2: AS5048A Block Diagram VDD5V SCK Register MISO LDO VDD3V Setting SPI OTP MOSI CSn 14-bit A/D ATAN AFE 14-bit A/D PWM PWM (CORDIC) AGC AS5048A GND AS5048A/AS5048B 2 ams Datasheet: 2014-Jun-05 v1-06