NSE-5310-ASSU ams

NSE-5310 Miniature Position Encoder with Zero Reference and IC Output 1 General Description 2 Key Features Direct digital output using IC protocol The TRACKER NSE-5310 is an incremental position sensor with on- chip encoding for direct digital output. A Hall element array on the End-of-magnet detection for built-in zero reference chip is used to derive the incremental position of an external 0.488 m resolution magnetic strip placed above the IC at a distance of 0.3 mm (typ). This sensor array detects the ends of the magnetic strip to provide a < 2 m bi-directional repeatability zero reference point. < 10 m absolute error The integration of Hall-effect position sensors, analog front end and On-chip temperature sensor digital signal processing on a single IC chip provides an ingeniously small position sensor, without the need for external pulse counters. Magnetic field strength monitor Direct digital output is accessible over the serial interface using IC Available in TSSOP-20 protocol. Custom packaging such as wafer-level chip scale packaging The TRACKER NSE-5310 provides absolute position information can be provided. Minimum order quantities may apply. over the length of a magnet pole pair (2 mm). A user can count pole pairs and achieve absolute position information over the entire length RoHS compliant of the magnet (essentially unlimited). With better than 0.5 micron resolution, the TRACKER is a robust, 3 Applications cost-effective alternative to miniature optical encoders. It can be The NSE-5310 is ideal for Micro-actuator and servo drive feedback, used as a linear or off-axis rotary encoder. Replacement for optical encoders, Optical and imaging systems, Consumer electronics, Precision biomedical devices, Instrumentation and automation, Automotive applications, and Integrated closed-loop motion systems using New Scales SQUIGGLE micro motor. Figure 1. TRACKER NSE-5310 Block Diagram VDD3V3 MagINCn MagDECn VDD5V LDO 3.3V PWM PWM Interface Pos Sin DSP SDA Mag Cos SCL Linear Hall Absolute AGC AGC AGC Array Interface & 2 (I C) Frontend Temperature sensor AO Amplifier CSn OTP Register Incremental Programming Interface NSE-5310 Parameters Prog www.ams.com Revision 1.6 1 - 25NSE-5310 Datasheet - Applications Contents 1 General Description .................................................................................................................................................................. 1 2 Key Features............................................................................................................................................................................. 1 3 Applications............................................................................................................................................................................... 1 4 Pin Assignments ....................................................................................................................................................................... 3 4.1 Pin Descriptions.................................................................................................................................................................................... 3 5 Absolute Maximum Ratings ...................................................................................................................................................... 5 6 Electrical Characteristics........................................................................................................................................................... 6 6.1 Magnet Input Specification ................................................................................................................................................................... 6 6.2 Electrical System Specifications........................................................................................................................................................... 7 6.3 DC/AC Characteristics for Digital Inputs and Outputs .......................................................................................................................... 8 7 Detailed Description.................................................................................................................................................................. 9 7.1 Using 3.3V or 5V Operation................................................................................................................................................................ 11 8 Application Information ........................................................................................................................................................... 12 8.1 Hall Sensor Array ............................................................................................................................................................................... 12 8.2 Automatic Gain Control (AGC) ........................................................................................................................................................... 12 8.3 Temperature Sensor........................................................................................................................................................................... 12 8.4 IC User Interface ............................................................................................................................................................................... 13 8.4.1 Sync Mode................................................................................................................................................................................. 14 8.5 Z-axis Range Indication (Red/Yellow/Green Indicator) .................................................................................................................... 15 8.6 Pulse Width Modulation (PWM) Output.............................................................................................................................................. 15 8.7 Magnetic Strip Requirements ............................................................................................................................................................. 16 8.7.1 Mounting the Magnet................................................................................................................................................................. 16 8.8 Programming the NSE5310................................................................................................................................................................ 18 8.8.1 Zero Position Programming ....................................................................................................................................................... 18 8.8.2 User Selectable Settings ........................................................................................................................................................... 19 8.9 Fast / Slow Mode:............................................................................................................................................................................... 20 9 Package Drawings and Markings ........................................................................................................................................... 21 9.1 Recommended PCB Footprint............................................................................................................................................................ 22 10 Ordering Information............................................................................................................................................................. 24 www.ams.com Revision 1.6 2 - 25