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NSE-5310_07 Datasheet, PDF (1/22 Pages) ams AG – Miniature Position Encoder with Zero Reference and IC Output | |||
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NSE-5310
Miniature Position Encoder with Zero
Reference and I²C Output
1 General Description
The TRACKER NSE-5310 is an incremental position sensor with on-
chip encoding for direct digital output. A Hall element array on the
chip is used to derive the incremental position of an external
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
zero reference point.
The integration of Hall-effect position sensors, analog front end and
digital signal processing on a single IC chip provides an ingeniously
small position sensor, without the need for external pulse counters.
Direct digital output is accessible over the serial interface using I²C
protocol.
The TRACKER NSE-5310 provides absolute position information
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
of the magnet (essentially unlimited).
With better than 0.5 micron resolution, the TRACKER is a robust,
cost-effective alternative to miniature optical encoders. It can be
used as a linear or off-axis rotary encoder.
Figure 1. TRACKER NSE-5310 Block Diagram
2 Key Features
ï®ï Direct digital output using I²C protocol
ï®ï End-of-magnet detection for built-in zero reference
ï®ï 0.488 μm resolution
ï®ï < 2 μm bi-directional repeatability
ï®ï < ±10 µm absolute error
ï®ï On-chip temperature sensor
ï®ï Magnetic field strength monitor
ï®ï Available in TSSOP-20
ï®ï Custom packaging such as wafer-level chip scale packaging
can be provided. Minimum order quantities may apply.
ï®ï RoHS compliant
3 Applications
The NSE-5310 is ideal for Micro-actuator and servo drive feedback,
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 Scaleâs
SQUIGGLE micro motor.
VDD5V
VDD3V3
LDO 3.3V
Sin
Cos
Linear Hall
Array
AGC
&
Frontend
Amplifier
NSE-5310
Pos
DSP
Mag
AGC
AGC
Temperature sensor
PWM
Interface
Absolute
Interface
(I2C)
OTP
Register
Programming
Parameters
Incremental
Interface
MagINCn
MagDECn
PWM
SDA
SCL
AO
CSn
Prog
www.ams.com
Revision 1.5
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