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