Miniature Chip. PAT9125EL Datasheet

PAT9125EL Chip. Datasheet pdf. Equivalent


PixArt PAT9125EL
PixArt Imaging Inc.
PAT9125EL Product Datasheet
Optical Tracking Miniature Chip
PAT9125EL: Optical Tracking Miniature Chip
General Description
The PAT9125EL is PixArt Imaging’s low power optical
tracking miniature chip using PixArt’s LASER-based optical
navigation technology enabling digital surface tracking. It
integrates an optical chip with a LASER light source in a
single miniature package, providing wide depth of field
(DOF) range on glossy surfaces, and design flexibility into
highly space constraint devices. This tracking system also
does not require code wheel, code strip and any special
marking on tracking surface for motion control or tracking
purposes. It is recommended for use in hermetic or
enclosed mechanical system design and applications.
LASER power calibration process is NOT required in the
complete system; it was pre-calibrated at chip level which
helps to facilitate high volume assembly.
Key Features
Miniature reflowable SMT package with built-in VCSEL
LASER light source in a single package
Wide DOF range on glossy surfaces, e.g. stainless steel
(STS)
No lens is needed
Compliance to IEC/EN 60825-1 Eye Safety
Class 1 LASER power output level
On-chip LASER fault detection circuitry
Support I2C or 3-wire SPI or interface
Programmable resolution up to 1,275cpi (on flat STS)
Motion detection interrupt output
Efficient low power management with programmable
sleep modes & downshift time
Internal oscillator no external clock input needed
Applications
Suitable for space-constraint and battery-powered
wireless devices
Devices that requires tracking on surfaces with wide DOF
working range
Devices that require tracking on small diameter of shaft
and suitable for wearable and portable devices
Key Parameters
Parameter
Supply Voltage
Control Interface
Distance to tracking
surface (DOF)
Max. tracking
speed
Max Resolution
Operating current
(Average @ VDD =
VLD = 3.3V)
Light Source
Package Size LWH
Value
VDD : 2 connection types
type1 2.1 ~ 3.6V
type2 1.7 ~ 1.9V
VLD : 2.7 ~ 3.6V
I2C or 3-wire SPI
1 ~ 30mm (on STS surface)
On flat STS
30 ips @ distance 3mm
10 ips @ distance 1~3mm
On 1.0mm diameter STS shaft
900 rpm @ distance 3mm
300 rpm @ distance 1~3mm
~1,275 cpi (on flat STS) or
~630 counts/rev (on 1.0mm
diameter STS shaft at 1.0mm
distance)
Run : 0.7mA
Sleep1/2 : 25µA / 10uA
Power down : 5µA
VCSEL LASER 850 nm
3.5 x 3.2 x 1.0 mm
Ordering Information
Part Number
PAT9125EL-TKIT
PAT9125EL-TKMT
Interface
I2C
SPI
Package Type
LGA 8-pin
LGA 8-pin
For any additional inquiries, please contact us at
http://www.pixart.com/contact.asp
Version 1.2 | 31 May 2017 | 21002AEN
PixArt Imaging Inc. http://www.pixart.com
All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.
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PAT9125EL Datasheet
Recommendation PAT9125EL Datasheet
Part PAT9125EL
Description Optical Tracking Miniature Chip
Feature PAT9125EL; PixArt Imaging Inc. PAT9125EL Product Datasheet Optical Tracking Miniature Chip PAT9125EL: Optical.
Manufacture PixArt
Datasheet
Download PAT9125EL Datasheet




PixArt PAT9125EL
PixArt Imaging Inc.
PAT9125EL Product Datasheet
Optical Tracking Miniature Chip
Contents
Introduction................................................................................................................................................................. 3
1.1 Overview ................................................................................................................................................................. 3
1.2 Signal Description .................................................................................................................................................... 4
1.3 Potential Tracking Mechanisms............................................................................................................................... 5
1.4 Terminologies.......................................................................................................................................................... 6
Operating Specifications .............................................................................................................................................. 7
2.1 Absolute Maximum Ratings..................................................................................................................................... 7
2.2 Recommended Operating Conditions ..................................................................................................................... 7
2.3 DC Characteristics.................................................................................................................................................... 8
Mechanical Specifications ............................................................................................................................................ 9
3.1 Mechanical Dimension ............................................................................................................................................ 9
Reference Schematics................................................................................................................................................ 10
4.1 Schematics for I2C Interface (PAT9125EL-TKIT) ..................................................................................................... 10
4.1.1 High Voltage Segment (VDD : 2.1V ~ 3.6V) ...................................................................................................... 10
4.1.2 Low Voltage Segment (VDD : 1.7V ~ 1.9V)....................................................................................................... 10
4.2 Schematics for SPI Interface (PAT9125EL-TKMT) .................................................................................................. 11
4.2.1 High Voltage Segment (VDD : 2.1V ~ 3.6V) ...................................................................................................... 11
4.2.2 Low Voltage Segment (VDD : 1.7V ~ 1.9V)....................................................................................................... 11
Registers List .............................................................................................................................................................. 12
Document Revision History .................................................................................................................................................... 13
Version 1.2 | 31 May 2017 | 21002AEN
PixArt Imaging Inc. http://www.pixart.com
All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.
2



PixArt PAT9125EL
PixArt Imaging Inc.
PAT9125EL Product Datasheet
Optical Tracking Miniature Chip
Introduction
1.1 Overview
PAT9125EL is a high performance and an ultralow power CMOS-processed optical navigation chip with the integrated digital
image process algorithm/circuits and a VCSEL LASER as the light source. It is based on PixArt’s optical navigation technology
of LASER which measures changes in position by optically acquiring sequential surface images (frames) and mathematically
determining the speed, the direction and the magnitude of motion. The displacement X and Y information are available in
registers. A host controller can read and translate the displacement X and Y information from the SPI or I2C serial interface.
Note: Throughout this document PAT9125EL is referred to as the chip.
MOTION
NCS / ID_SEL
SCLK / SCL
SDIO / SDA
Light Source
LASER DRIVER
POWER SAVING
MANAGEMENT
MOTION
DETECTION
SPI SLAVE
Or
I2C SLAVE
LASER SINGLE FAULT
DETECTION
Image Array
VOLTAGE
REGULATOR
AND
POWER
CONTROL
IMAGE PROCESSING
CONTROL REGISTERS
VLD
(LASER power input)
VDD
(Chip power input)
VSS
VDDA
(1.8V regulator output)
Figure 1. Functional Block Diagram
Version 1.2 | 31 May 2017 | 21002AEN
PixArt Imaging Inc. http://www.pixart.com
All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.
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