AS5035 8-bit (64 PPR) INCREMENTAL MAGNETIC ROTARY ENCODER FACT SHEET General Description Key Features The AS5035 is a contactless magnetic incremental encoder with 64 quadrature pulses per revolution (8-bit resolution) and index output. - Full turn (360°) contactless angular position encoder - 2 quadrature A/B outputs with 64 pulses per revolution (ppr), 256 edges per revolution, 1.4° per step - Accurate user programmable zero position - Index output (one pulse per revolution) The angular position of the magnet during assembly is not critical as the AS5035 allows for a user programmable zero-position to an accuracy of 0.35° - Failure detection mode for magnet placement monitoring and loss of power supply - Wide temperature range: - 40°C to + 125°C Two diagnostic outputs are provided to indicate an out-ofrange condition of the magnetic field as well as movement of the magnet in Z-axis. In addition, a specific combination of output states indicate a loss of power supply. - Small lead-free package: SSOP 16 (5.3mm x 6.2mm) 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. Applications The AS5035 is available in a small 16pin SSOP package. It can be operated at either 3.3V or 5V supplies. - Industrial applications: - Robotics - Replacement of optical encoders - Flow meters - Man-machine interface - Automotive applications: - Power seat position sensing - Power mirror position sensing Pin Configuration 1 16 MagDECn 2 15 VDD3V3 A 3 14 NC B 4 Typical arrangement of AS5035 and magnet - Complete system-on-chip, including analog front end and digital signal processing VDD5V 13 NC 12 NC NC 5 Index 6 11 CSn VSS 7 10 OTP_CLK PROG 8 9 OTP_DO Benefits - AS5035 MagINCn 2-channel quadrature and index outputs provide an alternative to optical encoders AS5035 Pin configuration SSOP16 VDDV3V User programmable Zero positioning by OTP allows easy assembly of magnet VDD5V MagINCn LDO 3.3V MagDECn Diagnostic features for operation safety CSn Hall Array & Frontend Amplifier Ideal for applications in harsh environments due to magnetic sensing principle Ang Sin DSP Mag Cos Channel A Incremental Decoder Channel B Index Robust system, tolerant to magnet misalignment, air gap variations, temperature variations and external magnetic stray fields AS5035 OTP Zero Position OTP_CLK OTP_DO PROG AS5035 Block diagram Revision 1.0, 24-Oct-05 www.austriamicrosystems.com Page 1 of 1