Small Optical Encoder Modules Digital Output AEDS-965X very small

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Small Optical Encoder Modules Digital Output AEDS-965X very small

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AEDS-965X
Small Optical Encoder Modules Digital Output
AEDS-965X very small, package height high performance incremental encoder module. operate supply voltage, Vcc, 3.3/5V output voltage, Voh, will follow voltage level. When operated conjunction with codestrip, this module detects linear position. encoder consists lensed source detector enclosed small C-shaped plastic package. brighter LED, coupled with photodetector array, which less sensitive light, encoder highly tolerant aerosol environment. This module extremely receptive mounting misalignment. channel digital outputs Vcc, supply voltage input, accessed through four solder plated leads located 2.00mm (0.1 inch) centers. supply input LED, rated 16mA accessed through leads located 2.54mm. designed with linear codestrip. Other options available. Please contact factory more information.
Features
Small Size Built-in guide bumps codewheel codestrip Package Height Insensitive Radial, Tangential Axial Play +70°C recommended operating temperature Wide Resolution Range Channel Quadrature Output 3.3V 5.0V CMOS compatible Linear Rotary Application Wave solderable RoHS Compliant Aerosol Tolerant
Applications
Printers Copiers/Fax Plotters Office Automation Equipments
Theory Operation
AEDS-965X C-shaped emitter/detector module. Coupled with codewheel, translates rotary motion into two-channel digital output; coupled with codestrip, translates linear motion into two-channel digital output. seen Figure module contains single Light Emitting Diode (LED) light source. light collimated into parallel beam means single lens located directly over LED. Opposite emitter integrated detector circuits. This consists multiple sets photodetectors signal processing circuitry necessary produce digital waveforms. codewheel/codestrip moves between emitter detector, causing light beam interrupted pattern spaces bars codehweel/ codestrip. photodiodes that detect these interruptions arranged pattern that corresponds radius count density codewheel/0codestrip. These detectors also spaced such that light period pair detectors corresponds dark period adjacent pairs detectors. photodiode outputs through signal processing circuitry. comparators receive these signals produce final outputs Channels this integrated phasing technique output channel quadrature with Channel degrees phase).
Definitions
Note: Refer Figure output waveform Count (N): number window pairs counts revolution (CPR) codewheel. number lines inch codestrip (LPI) shaft Rotation degrees cycles cycle electrical degree, equivalent window pair. Pulse Width (P): number electrical degree that output high during cycle. This value nominally 180° cycle. Pulse Width Error (P): deviation, electrical degrees, pulse width from ideal value 180° State Width (S): number electrical degrees between transition output channel neighboring transition output channel There states cycle, each nominally State Width Error (S): deviation, electrical degrees each state width from ideal value Phase number electrical degrees between center high state channel center high state channel Phase Error deviation phase from ideal value 90°e. Direction Rotation: When codewheel rotates counter clockwise direction viewed from encoder motor), channel will lead channel codewheel rotates clockwise direction, channel will lead channel Optical Radius distance from codewheel's center rotation optical center (O.C) encoder modules. Angular Misalignment Error Angular misalignment sensor relation tangential direction. This applies both rotary linear motion. Mounting Position (RM): Distance from Motor Shaft center rotation center Alignment receiving hole.
Aerosol Tolerant
AEDS-965x series uses Transmissive Optical Technology with specially designed photodetector reduce compensate errors mists contaminations. Coupled with brighter LED, better penetration through mists deposits, this enables encoder continue operating normally mists environment.
AEDS-965x Series Block Diagram
Figure
AEDS-965x Timing Diagram
Figure
Absolute Maximum Ratings
Parameter Storage Temperature Operating Temperature Supply Voltage (Detector) Output Voltage Output current channel Soldering Temperature Forward Reverse Voltage Symbol TSOL ILED Min. -0.5 -0.5 -1.5 Max. Units Volts 3.0V 100µA Notes
Subjecting part stresses beyond those listed under this section cause permanent damage device. These stress ratings only imply that devices function beyond these ratings. Exposure extremes these conditions extended periods affect device reliability.
Recommended Operating Conditions
Parameter Temperature Supply Voltage (Detector) Load Capacitance Pullup Resistor Count Frequency Angular Misalignment Mounting Position Forward Current (LED) Symbol Min. Rpull ILED -3.0 (Rop-0.095") none +3.0 Typ. Max. Units Volts Deg. (inch) Recommended pullup. Velocity (rpm) N/60 Mounting consideration Refer mounting consideration Recommended (±10%) series resistor between 3.3V supply Vled. Ripple 100mVpp Notes
Electrical Characteristics
Electrical Characteristics over Recommend Operating Range, typical 25°C
Parameter Supply Current (Detector) High Level Output Voltage Level Output Voltage Rise Time Fall Time Forward Voltage
Symbol Min.
Typ.@ 3.3V
Max.
Units
Notes Typ. -1.2 Typ. 3.3V Typical 20mA
(turn
Note: Refer Figure output waveform
Encoding Characteristics
Encoding Characteristics over Recommended Operating Conditions Mounting Conditions. These characteristics include codewheel/codestrip contribution. typical values average over full rotation codewheel Nominal Mouting Position Typical Operating Conditions. codestrip, Typical Values obtained zero angular displacement Typical Operating Conditions. Maximums worst case values predicted over full range Recommended Mounting Tolerances Operating Conditions, with consideration population shift.
Parameter
Pulse Width Error Logic State Width Error Phase Error
Symbol Typ.
Max. Units
Mounting Configuration
Note: These dimension includes shaft play codewheel warp. dimensions mounting module codewheel/codestrip should measured with respect mounting post shown above.
Mounting Configuration Table
Error (Option P)=11.00mm (Option Q)=23.36mm 0.15 Unit Notes Recommend closer detector side (upper side), order give enough margin encoder operation.
Radial Tangential Angular
0.13 0.13
Deg.
Package Dimension
AEDS-9650-X10 (Straight Lead)
AEDS-9651-X10 (Bent Lead)
Recommended Wave Solder Profile
Pb-free Wave Soldering Profile Std-Profile
Temperature (°C)
120°C/120 Time Reflow Cool Down
Parameter Solder Temperature Preheat Zone Temperature Time Solder Zone (Encoder Lead)
Min.
Max.
Nominal values
Units
Note: Nominal values evaluated profiles optimum performance. Min/Max critical limits ensure encoders good condition.
Ordering Information
Bracket Option
AEDS-965
Option
Lead Configuration Straight Leads Bent Leads
Resolution Option
product information complete list distributors, please site:
www.avagotech.com
Avago, Avago Technologies, logo trademarks Avago Technologies, Limited United States other countries. Data subject change. Copyright 2006 Avago Technologies Pte. rights reserved. Obsoletes AV01-0285EN AV01-0506EN September 2006

Small Optical Encoder Modules Digital Output AEDS-965X very small

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