Description introducing additional top-up thickness attached encoder,

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Description introducing additional top-up thickness attached encoder,

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Agilent AEDR-8000 Series Encoders Reflective Surface Mount Optical Encoder
Description introducing additional top-up thickness attached encoder, AEDR-8000 Encoder series could easily solve height issue various applications. Furthermore, this great feature enhanced with offering different height profile options. Direct Replacement HEDR-8000 Encoder series possible with AEDR-8000 Encoder series. Such migration always simple easy perfect matching height profiles well same footprints both encoder series. AEDR-8000 Encoder series employs reflective technology rotary linear movement control. encoder houses light source photodetecting circuitry single package.
adding main features, AEDR-8000 Encoder series offers two-channel quadrature digital outputs (TTL compatible) where signal could interfaced directly with most signal processing circuitries. Thus, it's bound reduce design time application. Applications AEDR-8000 Encoder series provides motion sensing competitive price, making ideal high volume applications. small size surface mount package make ideal printers, copiers, card readers many consumer products, particularly where space weight design constraints.
Features Reflective technology Surface mount small outline leadless package Direct replacement HEDR-8000 encoder Single channel incremental output channels quadrature outputs direction sensing Single supply, compatible output -20°C 85°C absolute operating temperature Lead-free package Encoding resolution options: (lines/inch) 2.95, 5.91, 7.09 (lines/mm) height profile options: thickness thickness
Note: specifications subject change without prior notification.
Block Diagram AEDR-8000 Encoder
VLED SIGNAL PROCESSING CIRCUITRY CODEWHEEL CODESTRIP
Definitions State Width (S): number electrical degrees between transition Channel neighboring transition Channel There states cycle, each nominally 90°e. State Width Error (DS): deviation state width, electrical degrees, from ideal value 90°e. Phase (f): number electrical degrees between center high state Channel center high state Channel Nominally 90°e. Phase Error (Df): deviation phase, electrical degrees, from ideal value 90°e. Pulse Width (P): duration high state output, electrical degrees, within cycle. Nominally 180°e half cycle. Pulse Width Error (DP): deviation pulse width, electrical degrees, from ideal value 180°e. Count (N): number window pairs revolution (CPR) codewheel. linear codestrip, defined number window pairs unit length (lines inch [LPI] lines [LPmm]). Cycle (C): electrical degrees (°e). Equivalent window pair. Shaft Rotation: mechanical degrees. Also equivalent counts (codewheel only).
Theory Operation AEDR 8000 Encoder series combines emitter detector single surface mount leadless package. When used with codewheel linear codestrip, encoder translates rotary linear motion into digital outputs. seen block diagram, AEDR-8000 Encoder series consists three major components: light emitting diode (LED) light source, detector consisting photodiodes, lens focus light beam from emitter well light falling detector. operation encoder based principle optics where detector photodiodes sense absence presence light. this case, rotary/ linear motion object being
monitored converted equivalent light pattern codewheel/codestrip. shown above diagram, reflective area (window) codewheel codestrip) reflects light back photodetector whereas light reflected non-reflective area (bar). alternating light dark pattern, corresponding window bar, falls photodiodes codewheel rotates. moving light pattern exploited detector circuitry produce digital outputs representing rotation codewheel. When codewheel coupled motor, encoder outputs then direct representation motor rotation. same concept applies codestrip detect linear motion.
Line Density: number window pairs unit length, expressed either lines inch (LPI) lines (LPmm). Optical Radius (Rop): distance between codewheel center centerline between domes encoder.
(G): distance from surface encoder surface codewheel codestrip. Specular Reflectance amount incident light reflected surface. Quantified terms percentage incident light. spectrometer used measure specular reflectance surface (contact factory more information).
Radial Tangential Misalignment Error (ER, rotary motion, mechanical displacement radial tangential directions relative nominal alignment. Angular Misalignment Error Angular displacement encoder relative tangential line.
Output Waveform
FOUR STATES MAINTAINED.
AMPLITUDE
CODEWHEEL ROTATION LINEAR MOVEMENT
RADIAL (ER) ANGULAR (EA) TANGENTIAL (ET)
AEDR-8000
AEDR-8000
SHAFT
SHAFT
CODEWHEEL
CODEWHEEL
Absolute Maximum Ratings Storage Temperature, Operating Temperature, Supply Voltage, Output Voltage, Output Current Channel, IOUT
-40°C 85°C -20°C 85°C -0.5 -0.5 -1.0 Human Body Model JESD22-A114-A Class Machine Model JESD22-A115-A Class
Notes: Exposure extreme light intensity (such from flashbulbs spotlights) cause permanent damage device. CAUTION: advised that normal static precautions should taken when handling encoder order avoid damage and/or degradation induced ESD. Proper operation encoder cannot guaranteed maximum ratings exceeded.
Recommended Operating Conditions Parameter Sym. Temperature Supply Voltage Current Load Capacitance Count Frequency Radial Misalignment Tangential Misalignment Angular Misalignment Codewheel/Strip Tilt Codewheel/Strip
Min.
Typ.
(0.04)
(0.08)
Max. ±0.38 (±0.015) 0.38 0.015) (0.10)
Units (in.) (in.) deg. deg. (in.)
Notes Ripple mVp-p note Pull-Up note
Note: Refer "LED Current Limiting Resistor" page Count frequency velocity (RPM) N/60.
Encoding Characteristics Encoding characteristics over recommended operating condition mounting conditions. Parameter Symbol Typical Maximum Unit Pulse Width Error Pulse Width Error (Ch. Phase Error
Notes AEDR-8010-K AEDR-8000-K AEDR-8100-P AEDR-8100-Q AEDR-8000-K AEDR-8100-P AEDR-8100-Q
Note: Typical values represent encoder performance typical mounting alignment, whereas maximum values represent encoder performance across range recommended mounting tolerance.
Electrical Characteristics Characteristics over recommended operating conditions 25°C. Parameter Symbol Min. Typ. Detector Supply Current High Level Output Voltage Level Output Voltage Rise Time Fall Time
Max.
Unit
Notes -0.2
Recommended Codewheel Codestrip Characteristics
Parameter Window/Bar Ratio Window/Bar Length Specular Reflectance
Symbol Ww/Wb
Min.
Max.
Unit (inches)
Notes
Optical Radius
1.80 (0.071) 2.31 (0.091) 2.95 (75) 5.91 (150) 7.09 (180)
Reflective area. note Nonreflective area AEDR-80X0-K AEDR-8100-P AEDR-8100-Q Recommended value
Notes: Measurements from µScan meter. Contact factory more information. Contact factory more information compatibility codewheel/strip.
Current Limiting Resistor resistor limit current required. recommended value (±10 resistor should placed series between supply device
(Vled). This will result current approximately Moisture Sensitive Level AEDR-8000 series specified moisture sensitive level (MSL)
Package Outline Drawing
VIEW
1.02 VLED
0.62
1.28
1.54
0.64
0.84 1.62
BOTTOM VIEW
SIDE VIEW (LOW RESOLUTION)
SIDE VIEW (HIGH RESOLUTION)
DIMENSIONS MILLIMETERS TOLERANCE X.XX
Encoder Orientation AEDR-8000 series designed such that both detector should placed
parallel window/bar orientation, shown. such, encoder tolerant against
radial play 0.38 emitter side should placed closer rotating shaft.
CODEWHEEL
CODESTRIP
DIRECTION RADIAL PLAY
DIRECTION RADIAL PLAY
Mounting Consideration
CODEWHEEL/CODESTRIP
11.00 (0.433
Direction Codewheel Rotation With emitter side encoder placed closer codewheel centre, Channel
leads Channel when codewheel rotates anti-clockwise vice versa.
ANTI-CLOCKWISE EMITTER LEADS LEADS EMITTER
CLOCKWISE
Viewed from
Recommended Lead-Free Reflow Soldering Temperature Profile
TEMPERATURE (°C) 125°C
SEC. 255°C 250°C 217°C SEC. MAX. SEC.
40°C
TIME (SEC.) HEAT SOLDER PASTE SOLDER REFLOW COOL DOWN
Preheat Temperature 40°C 125°C sec. max. Temperature Maintain Above 217°C sec. Peak Temperature Time Above 250°C sec.
Note: treatment high temperature, AEDR-8000 transparent compound expected turn yellow after reflow.
Resolution Indicator Since encoder small imprint resolution marking package, color-coding package employed differentiate resolutions. details are: Color Clear Amber
Ordering Information AEDR-8 Option
Thickness (Low Resolution) (High Resolution)
Number Channels Channel Channels
Packaging Tape Reel
Lines Inch
Shipping Units 1000
Note: Encoders packed tape quantity 1000 pcs.
Available Options Resolution Shipping Units 1000
Encoder AEDR-8000 AEDR-8010 AEDR-8100 AEDR-8100
www.agilent.com/semiconductors
product information complete list distributors, please site. technical assistance call: Americas/Canada: (800) 235-0312 (916) 788-6763 Europe: 6441 92460 China: 10800 0017 Hong Kong: (+65) 6756 2394 India, Australia, Zealand: (+65) 6755 1939 Japan: (+81 0120-61-1280(Domestic Only) Korea: (+65) 6755 1989 Singapore, Malaysia, Vietnam, Thailand, Philippines, Indonesia: (+65) 6755 2044 Taiwan: (+65) 6755 1843 Data subject change. Copyright 2005 Agilent Technologies, Inc. 2005 5989-3067EN

Description introducing additional top-up thickness attached encoder,

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