NSE-5310 AMSCO [austriamicrosystems AG], NSE-5310 Datasheet

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NSE-5310

Manufacturer Part Number
NSE-5310
Description
Manufacturer
AMSCO [austriamicrosystems AG]
Datasheet
N S E - 5 3 1 0
M i n i a t u r e P o s i t i o n E n c o d e r S O I C w i t h Z e r o
R e f e r e n c e a n d I ² C O u t p u t
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
www.austriamicrosystems.com
D a t a S h e e t
VDD5V
Linear Hall
NSE-5310
Frontend
Amplifier
LDO 3.3V
Array
&
AGC
VDD3V3
Cos
Sin
Temperature sensor
Programming
Parameters
Register
AGC
Revision 1.0
DSP
OTP
2 Key Features
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 Scale’s
SQUIGGLE micro motor.
Direct digital output using I²C protocol
End-of-magnet detection for built-in zero reference
0.488 μm resolution
< 2 μm bi-directional repeatability
< ±10 µm absolute error
On-chip temperature sensor
Magnetic field strength monitor
Available in TSSOP or 3.9 mm x 2.5 mm die for chip-on-board
mounting
Custom packaging such as wafer-level chip scale packaging
can be provided. Minimum order quantities may apply.
RoHS compliant
Pos
Mag
AGC
Incremental
Interface
Absolute
Interface
Interface
PWM
(I
2
C)
MagINCn
MagDECn
PWM
SDA
SCL
AO
CSn
Prog
1 - 21

Related parts for NSE-5310

NSE-5310 Summary of contents

Page 1

... Custom packaging such as wafer-level chip scale packaging can be provided. Minimum order quantities may apply. 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 Scale’ ...

Page 2

... Digital input with pull- I2C A0 11 down www.austriamicrosystems.com 1 20 TestBus3 VDD5V VDD3V3 18 4 TestBus0 17 TestBus1 5 16 NSE-5310 PWM 6 15 CSn 7 14 SCL / CLK SDA / DIO 9 I2C_A0 10 11 Special Requirements Not Connected Indicates increasing or decreasing of magnitude by the AGC. Can be used for Push Button Function. Both signals are active ...

Page 3

... NSE-5310 Data Sheet - Table 1. Pin Descriptions Pin Pin Name Pin Type Number SDA (DO) 12 Digital I/O / Tristate SCL (CLK) 13 Digital input Digital input with pull- CSn 14 up PWM 15 Digital output TestBus1 16 Analog I/O TestBus0 17 VDD3V3 18 Supply pad ...

Page 4

... NSE-5310 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in maximum rating conditions for extended periods may affect device reliability ...

Page 5

... NSE-5310 Data Sheet - Electrical Characteristics Table 3. Operating Conditions Symbol Parameter VDD5V Positive I/O Supply Voltage VDD3V3 Positive Core Supply Voltage VDDD/ VDDA Ambient Temperature T AMB Supply Current I supp 6.1 Magnet Input Specification Table 4 ...

Page 6

... NSE-5310 Data Sheet - 6.2 Electrical System Specifications Table 5. Electrical System Specifications Symbol Parameter RES Resolution INL Integral non-linearity (optimum) opt INL Integral non-linearity (over temperature) temp INL Integral non-linearity Differential non-linearity ...

Page 7

... NSE-5310 Data Sheet - 6.3 DC/AC Characteristics for Digital Inputs and Outputs Table 6. CMOS Input, CMOS Input Pull Down, CMOS Input Pull Up Symbol Parameter V High Level Input Voltage IH V Low Level Input Voltage ...

Page 8

... Data Sheet - Detailed Description The TRACKER measures the spatially varying magnetic field produced by moving a multi-pole magnetic strip over a Hall sensor array on the NSE-5310 chip (see Figure 3). The internal sinusoidal (SIN) and phase-shifted sinusoidal (COS) signals are filtered and transformed into angle (ANG) and magnitude (MAG), representing the absolute linear position within pole pair on the magnet. Interpolation with 12 bit (4096) resolution yields 0.5 µ ...

Page 9

... Over Travel 1 ½ poles either end A system controller and user-supplied flash memory with the TRACKER NSE-5310 provide for long-range absolute position information that is retained during sleep mode or power-down. Figure 5. Example of Absolute long-range position information with use of external flash memory and controller ...

Page 10

... NSE-5310 Data Sheet - 7.1 Using 3. Operation For 3.3V operation: Bypass the voltage regulator (LDO) by connecting VDD3V3 with VDD5V. For 5V operation: Connect the 5V supply to pin VDD5V. VDD3V3 (LDO output) must be buffered by a 2.2µF to 10µF capacitor placed close to the supply pin ...

Page 11

... Application Information Figure 7. TRACKER NSE-5310 Evaluation Board Figure 7 shows NSE-5310 SOIC mounted on a PCB with FPC connector for ease of handling. A multipole linear magnetic strip is positioned above the sensor. 8.1 Hall Sensor Array Eight Hall Sensor Front End cells are connected to two current summation busses which end into two Active Load circuits. The Hall elements are arranged in an even linear array ...

Page 12

... NSE-5310 Data Sheet - 8.2 Automatic Gain Control (AGC) As the magnetic input field varies non-linearly with the air gap between sensor and magnet, the gain is controlled to an optimum input signal for the SD ADC. The magnitude output is compared to a target register value. The most significant eight bits are used. If the actual magnitude differs from the target value, an UP/DOWN signal for the AGC counter signal is generated ...

Page 13

... AGC is out of range. The I²C readout can be stopped after every byte with the stop condition P. Timing constraints are according to I2C-Bus Specification V2.1 / 2000. 8.4.1 Sync Mode This mode is used to synchronize the external electronics with the NSE-5310. In this mode two signals are provided at the pins DTEST_A and DTEST_B. Figure 11. Sync Mode ...

Page 14

... Pulse Width Modulation (PWM) Output The NSE-5310 also provides a pulse width modulated output (PWM), whose duty cycle is proportional to the relative linear position of the magnet within one pole pair (2.0 mm). This cycle repeats after every subsequent pole pair: Where: Digital position = 0 – 4094 Exception: A linear position of 1999.5µ ...

Page 15

... Magnetic Strip Requirements The NSE-5310 requires a magnetic strip with alternate poles (North-South) of pole length and pole pair length of 2 mm. A half pole is required at each end of the strip. The length of the strip determines the maximum measured stroke; it must greater than the stroke increments (1 ...

Page 16

... Data Sheet - Lateral Stroke of Multi-pole Strip Magnets: are covered by the magnet in either direction. The Hall array on the NSE-5310 has a length of 2.0mm, hence the total stroke is: maximum lateral Stroke = Length of active area – length of Hall array Note: Active area in length is defined as the area containing poles with the specified 1 ...

Page 17

... NSE-5310 Data Sheet - Package Drawings and Markings Figure 14. 20-pin TSSOP Package Die C/L 3.0475±0.235 TSSOP20 (CSOIC20 Eng. Smp TestBus3 20 2 MagIncrn VDD5V 19 3 MagDecrn VDD3V3 18 4 DTest1_A ...

Page 18

... Data Sheet - The evaluation kit includes an NSE-5310 mounted in a TSSOP 20 package with flex cable, for easy handling during evaluation and system development. The TRK-1T02-E evaluation pack includes a TRK-1T02 along with a suitable linear magnetic strip, a MC-31MB interface card and New Scale Pathway™ ...

Page 19

... NSE-5310 Data Sheet - Custom chip-on-board packaging can be provided for qualified OEMs. Minimum order quantities apply. Inquire for more detail. Figure 16. Custom Chip-On-Board Packaging (5.4 x 4.2 x 0.6 mm) Custom wafer-level chip scale packaging can be provided for qualified OEMs. Minimum order quantities apply. Inquire for more detail. ...

Page 20

... Evaluation Pack NSE-5310ASDF Die thickness 300µm ±25µm NSE-5310ASSU Die thickness 300µm ±25µm NSE-5310ASST Die thickness 300µm ±25µm Custom chip-on-board Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: ...

Page 21

... NSE-5310 Data Sheet - Copyrights Copyright © 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. ...

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