Miniature position sensor with integrated on-chip encoder: smallest size
and highest
resolution... in a robust, cost-effective package
The TRACKER™ position sensor is a magnetic sensor array with
integrated on-chip digital encoder, which transforms a magnetic sine
wave into a direct digital position output. With 0.5 micron resolution and
size as small as 3.9 x 2.5 mm, it is a robust, cost-effective
alternative to miniature optical encoders for non-contact position
sensing.
On-chip encoding provides direct digital output using standard I2C
protocol, eliminating the need for external pulse counters.
Efficient control system communications allows up to two TRACKER
position sensors on a single I2C bus. (Custom position sensors with
SPI and A quad B interface are also available;
contact the factory.)
The highest-resolution magnetic encoder available, the TRACKER
position sensor is insensitive to light, shock, vibration, and
high-particulate environments. It features low sensitivity to
external magnetic fields and can be used as a linear encoder or
off-axis rotary encoder.
Ideal for miniature optical, medical systems
The TRACKER position sensor is ideal for optical and imaging
applications such as focus and optical image stabilization, as well
as consumer electronics, precision biomedical devices,
industrial instrumentation and defense/security applications. Its small
size makes it perfect for creating tiny, integrated closed-loop
motion systems using micro motors such as New Scale’s
SQUIGGLE micro motor.
TRACKER mini position sensor benefits
- Smallest size
Chip-scale packaging as small as 2.5 x 3.9 mm
TSSOP on board: 8.5 x 11.5 x 3mm total height including
magnet
Wafer level chip scale packaging available
- Accurate, non-contact sensing
0.5 µm resolution
better than 2 µm repeatability
- Complete system on a chip
sensing and encoding integrated in one ingeniously small
package
- Direct digital output (I2C)
eliminates need for external pulse counters
- Robust
insensitive to light, shock, vibration and particulates;
less stringent mounting alignment
- Absolute performance
zero reference: automatic gain & offset correction
- Long travel
8 mm travel with standard 11 mm linear magnet
longer magnets available
TRACKER sensor operation
The TRACKER position sensor integrates a sensor array and encoder
on an SOIC (NSE-5310). A linear array of eight Hall
effect sensors on the chip measures the spatially varying magnetic
field produced by moving a multi-pole magnetic strip above the
sensor.
The magnetic field generates internal sinusoidal and
phase-shifted sinusoidal signals. These signals are filtered and
transformed into angular and magnitude values, representing the
absolute linear position of a 2 mm long magnetic encoder strip pole
pair. The position information is read via an I2C interface.
Automatic gain control (AGC) adjusts for DC bias in the magnetic
field and provides a large dynamic input range of the magnetic field
for higher immunity to external magnetic fields. It also provides an
absolute magnitude of the magnetic field intensity, which can be
used to detect the end of the magnetic strip and thereby serve as a
built-in zero reference.
Download TRACKER
Overview (720Kb PDF)
Download TRACKER
NSE-5310 data sheet with drawings and I2C details (1.6Mb PDF)
|
TRACKER Specifications
|
| Supply
Voltage |
3 - 3.6 V |
| Supply
Current |
21 mA max |
| Resolution |
0.5 µm @ 12 bits per 2 mm pole pair
|
| Repeatability |
better than 2 μm (bi-directional) |
| Integral
error* |
± 20 μm |
| Differential
error* |
±0.97 μm (10 bit, no missing codes) |
| Hysteresis |
2-8 LSB with incremental output/ 12 bit res.
0 for absolute serial output |
| I2C read-out
frequency |
400 kHz (typ) to 800 kHz (max) |
| Stroke
(linear) |
magnetic strip length minus 3 mm |
| Operating Temperature
|
-40 to +125° C
|
| Storage Temperature
|
-55 to +125° C
|
| Humidity
non-condensing |
5 to 85% |
| Dimensions -
NSE-5310 |
2.5 x 3.9 x 0.6 mm (chip-on-board)
4.3 x 6.5 x 1.1 mm in TSSOP |
Dimensions -
TRK-1T02
mounted on PCB |
8.5 x 11.5 x 1.61 mm
(Total height ~3 mm with magnet and air gap)
|
| Thermal pkg resistance
|
114.5°C/W (still air) absolute max |
* error includes magnet error; tested over 8 mm measurement range
Ordering Information
The TRK-1T02 is available as a ready-to- use module which
includes a TRACKER NSE-5310 encoder in a 20-pin TSSOP package,
mounted on a printed circuit board with an FPC connector. It can be
easily plugged into a MC-33MB-RV interface card and controlled through
our New Scale Pathway™software or other customer-supplied I2C
interface.
TRACKER position sensors are available in TSSOP, chip-on-board, wafer-level chip scale
and dice-on-foil packaging for qualified OEMs. Minimum order
quantities may apply. |
The TRACKER NSE-5310 position sensor
with on-chip encoding - shown in chip-on-board (above) and TSSOP on board
(below) packaging. Dice-on-foil
and custom chip scale packaging
are also available.
The TRACKER position sensor
offers high resolution non-contact sensing.
A Hall effect sensor
array is integrated with an on-chip encoder, providing direct
digital output via I2C interface. Automatic gain control
and offset correction provide high resolution.
Developer’s kit
and reference design:
Battery operated, ready-to-use kit includes a TRACKER NSE-5310 miniature position sensor
(TSSOP package), along with a SQUIGGLE micro motor to provide
precise motion, and New Scale's Pathway Software. Kit serves as
mechanical and electrical reference design; all components can be easily removed for integration into your
prototype.
Learn more
or
buy online.
The TRK-1T02-E TRACKER
Evaluation Pack is a full- featured development platform for the
TRACKER Position Sensor. The MC-33MB-RV interface card accepts the
I2C input from one or two TRACKER sensors, and connects via USB
to your PC. Use the New Scale Pathway™ Software to view and
collect position information. This development kit provides for
easy sensor evaluation and system development.
Buy Now
|
|
|
Model
|
Description |
| TRK-1T02
Position Sensor |
Integrated sensor and encoder in TSSOP on 8.5 x 11.6 mm printed circuit
board with flex cable. (Magnet sold separately.) |
DK-RV-1.8-TRK-33
developer's kit
with micro motor
learn
more |
Closed-Loop Developers Kit. One
SQL-RV-1.8-6-12 SQUIGGLE motor
and one TRACKER NSE-5310 miniature position sensor in TSSOP20 package, with
11 mm magnet. Motor and sensor mounted in a reference design module
demonstrating proper motor loading, mounting and alignment. Module and
MC-3300 motor controller are mounted in a protective case. Kit is easily
disassembled for integration into your system. Includes USB cable, New Scale
Pathway Software and user guides. Battery operated (2 AA batteries); AC
power adapter optional (PCS-3V-K). |
|
|
TRK-1T02-E
Evaluation Pack |
TRK-1T02 position sensor, 11-mm long linear magnet (for 8 mm stroke),
MC-31MB interface card with USB cable, AC power supply with cables and
adapters, New Scale Pathway software and user guide. |
|
TRACKER position sensor kit |
For users who have purchased an MC-3300 controller as part of another kit
02108-3-0000 TRK-1T02 Tracker Sensor - Mounted
02234-3-0000 Adapter board for MC-3300
02015-0-0001 Magnet, 2mm x 11mm |
| NSE-5310 SOIC |
Integrated sensor and encoder in TSSOP or die-on-foil; contact factory |
| NSE-5310 Custom config |
Custom chip-on-board, WLCSP or QFN available in quantity orders. Contact
factory |
Put the TRACKER mini encoder to work
Call us at (585) 924-4450 or
email us today. |
