AS5045 AB ams

AS5045 12-Bit Programmable Magnetic Rotary Position Sensor The AS5045 is a contactless magnetic position sensor for General Description accurate angular measurement over a full turn of 360. It is a system-on-chip, combining 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 magnet may be placed above or below the IC. The absolute angle measurement provides instant indication of the magnets angular position with a resolution of 0.0879 = 4096 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal. An internal voltage regulator allows the AS5045 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 AS5045, 12-Bit Programmable Magnetic Rotary Position Sensor are listed below: Figure 1: Added Value of Using AS5045 Benefits Features Highest reliability and durability in harsh Contactless absolute angle position measurement environments Great flexibility during assembly User programmable zero position Diagnostic modes for magnet detection and power supply Operation safety loss Lower material cost (no magnetic Immune to external magnetic stray fields shielding needed) Two digital 12-bit absolute outputs: Serial interface and Pulse width modulated (PWM) output Failure detection mode for magnet placement monitoring and loss of power supply Red-Yellow-Green indicators display placement of magnet in Z-axis ams Datasheet Page 1 v2-01 2017-Jul-13 Document FeedbackAS50 45 Gene ral Des c rip t ion Serial read-out of multiple interconnected AS5045 devices using Daisy Chain mode Tolerant to magnet misalignment and airgap variations Wide temperature range: - 40C to 125C Small Pb-free package: SSOP-16 (5.3mm x 6.2mm) Applications The AS5045 is ideal for industrial applications like Robotics, Stepper motor control, RC servo control and Replacement of high-end potentiometers. Block Diagram The functional blocks of this device are shown below: Figure 2: AS5045 Block Diagram VDD3V3 MagINCn MagDECn VDD5V LDO 3.3V PWM PWM Interface Sin Ang DO Absolute DSP Cos Mag Hall Array Interface CSn & (SSI) Frontend CLK Amplifier OTP Prog DI Register AS5045 Mode Page 2 ams Datasheet Document Feedback v2-01 2017-Jul-13