HEDS-9731OPTIONJ54 [AVAGO]
ROTARY OPTICAL POSITION ENCODER;
| 型号： | HEDS-9731OPTIONJ54 |
| 厂家： | 
AVAGO TECHNOLOGIES LIMITED |
| 描述： | ROTARY OPTICAL POSITION ENCODER 编码器 光电 |
| 文件： | 总11页 (文件大小：611K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HEDS-973x Series
Small Optical Encoder Modules
Data Sheet
Description
Features
The HEDS-973x series is a high performance, low cost,
optical incremental encoder module. When operated in
conjunction with either a codewheel or codestrip, this
module detects rotary or linear position. The module
consists of a lensed LED source and a detector IC enclosed
in a small C-shaped plastic package. Due to a highly colli-
mated light source and a unique photodetector array, the
module is extremely tolerant to mounting misalignment.
•ꢀ Small size
•ꢀ Low cost
•ꢀ Multiple mounting options
•ꢀ Wide resolution range
•ꢀ Linear and rotary options available
•ꢀ No signal adjustment required
•ꢀ Insensitive to radial and axial play
•ꢀ -40°C to +85°C operating temperature
•ꢀ High resolution version of the HEDS-970x
•ꢀ Two channel quadrature output
•ꢀ TTL compatible
1.8
0.071
•ꢀ Single 5 V supply
•ꢀ Wave solderable
Package Dimensions
9.8
0.386
MILLIMETERS
INCHES
DIMENSIONS ARE
03.8
0.150
0.25
(OPTICAL CENTER)
10.8
LEAD THICKNESS:
0.010
0.425
0.50
0.020
1.4
R
3.0
PIN 1 IDENTIFIER
0.118
0.055
0.8
0.031
5.5
0.217
1.4
0.055
7.0
0.276
6.40
0.252
12.6
4.2
0.496
0.167
5.0
0.198
3.9
0.152
0.14
1.7
0.067
0.006
15.0
0.591
7.5
0.295
3.9
0.154
2.00
0.079
2X Ø
20.2
0.795
LEAD THICKNESS 0.25 mm
LEAD PITCH 2.54 mm
10.1
0.398
Mounting Option #50 - Standard (Baseplane Mounting) Contact Factory for Detailed Package Dimensions
ESD WARNING: Normal handling precautions should be taken to avoid static discharge.
The two channel digital outputs and 5 V supply input are As seen in the block diagram, the module contains a single
accessed through four solder-plated leads located on ꢀ.54 Light Emitting Diode (LED) as its light source. The light is
mm (0.1 inch) centers.
collimated into a parallel beam by means of a single lens
located directly over the LED. Opposite the emitter is the
integrated detector circuit. This IC consists of multiple
sets of photodetectors and the signal processing circuitry
necessary to produce the digital waveforms.
The standard HEDS-973x is designed for use with an 11
mm optical radius codewheel, or linear codestrip. Other
options are available. Please contact factory for more in-
formation.
The codewheel/codestrip moves between the emitter and
detector, causing the light beam to be interrupted by the
pattern of spaces and bars on the codewheel/codestrip.
The photodiodes which detect these interruptions are
arranged in a pattern that corresponds to the radius and
countdensityofthecodewheel/codestrip.Thesedetectors
are also spaced such that a light period on one pair of
detectors corresponds to a dark period on the adjacent
pair of detectors. The photodiode outputs are fed through
the signal processing circuitry. Two comparators receive
these signals and produce the final outputs for channels
A and B. Due to this integrated phasing technique, the
digital output of channel A is in quadrature with channel
B (90 degrees out of phase).
Applications
The HEDS-973x provides sophisticated motion detection
at a low cost, making closed-loop control very cost-com-
petitive! Typical applications include printers, plotters,
copiers, and office automation equipment.
Note: Avago Technologies encoders are not recommended for use in
safety critical applications. Eg. ABS braking systems, power steering, life
support systems and critical care medical equipment. Please contact
sales representative if more clarification is needed.
Theory of Operation
The HEDS-973X is a C-shaped emitter/detector module.
Coupled with a codewheel, it translates rotary motion into
a two-channel digital output. Coupled with a codestrip, it
translates linear motion into a digital output.
Block Diagram
ꢀ
Pulse Width Error (ΔP): The deviation, in electrical degrees,
of the pulse width from its ideal value of 180°e.
Output Waveforms
State Width (S): The number of electrical degrees between
a transition in the output of channel A and the neighbor-
ing transition in the output of channel B. There are 4 states
per cycle, each nominally 90°e.
State Width Error (ΔS): The deviation, in electrical degrees,
of each state width from its ideal value of 90°e.
Phase (φ): The number of electrical degrees between the
center of the high state of channel A and the center of the
high state of channel B. This value is nominally 90°e for
quadrature output.
Phase Error (Δφ): The deviation of the phase from its ideal
value of 90°e.
Direction of Rotation: When the codewheel rotates
counterclockwise, as viewed looking down on the module
(so the marking is visible), channel A will lead channel B. If
the codewheel rotates in the opposite direction, channel
B will lead channel A.
Definitions
Count (N) =The number of bar and window pairs or counts
per revolution (CPR) of the codewheel, or the number of
lines per inch of the codestrip (LPI).
Optical Radius (Rop): The distance from the codewheel’s
center of rotation to the optical center (O.C.) of the
encoder module.
1 Shaft Rotation = 360 mechanical degrees
= N cycles
Angular Misalignment Error (E ): angular misalignment
A
1 cycle (c)
= 360 electrical degrees (°e)
= 1 bar and window pair
of the sensor in relation to the tangential direction. This
applies for both rotary and linear motion.
Pulse Width (P): The number of electrical degrees that an
output is high during one cycle. This value is nominally
180°e or 1/ꢀ cycle.
Mounting Position (R ): Distance from Motor Shaft center
of rotation to center of Alignment Tab receiving hole.
M
3
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
85
70
85
70
7
Units
Notes
Storage Temperature
TS
-40
°C
Option A & Q
All Other Options
Option A & Q
All Other Options
Operating Temperature
TA
-40
°C
Supply Voltage
VCC
VO
IO
-0.5
-0.5
-1.0
V
Output Voltage
VCC
5
V
Output Current per Channel
Soldering Temperature
mA
°C
ꢀ60
t ≤ 5 sec.
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
5.0
0.0
Max.
Units
Notes
Temperature
T
-40
85
°C
Option A & Q
70
All Other Options
Ripple < 100 mVp-p
3.ꢀ kΩ pull-up
(Velocity (rpm) x N)/60
Supply Voltage
VCC
CL
4.5
5.5
100
40
V
Load Capacitance
Count Frequency
Angular Misalignment
Mounting Position
pF
kHz
deg.
mm
(inch)
EA
-ꢀ.0
+ꢀ.0
RM
ROP -0.14
(ROP -0.006)
Shaft Ø 0.13 mm (0.005")
See Mounting Considerations
Note: The module performance is specified at 40 kHz but can operate at higher frequencies.
Electrical Characteristics
Electrical Characteristics over Recommended Operating Range, Typical at ꢀ5°C.
Parameter
Symbol
Min.
Typ.
17
Max.
40
Units
Notes
Supply Current
ICC
mA
Option A & Q
All Other Options
IOH = -ꢀ00 μA
IOL = 3.86 mA
57
85
High Level Output Voltage
Low Level Output Voltage
Rise Time
VOH
VOL
tr
ꢀ.4
V
0.4
V
180
40
ns
ns
CL = ꢀ5 pF,
RL = 3.3 kΩ pull-up
Fall Time
tf
4
Encoding Characteristics
Encoding Characteristics over Recommended Operating Condition and recommended mounting tolerances. These
characteristics do not include codewheel/codestrip contribution. The Typical Values are averages over the full rotation
of the codewheel. For operation above 40 kHz, see frequency derating curves.
Parameter
Symbol
ΔP
Typical
Maximum
Units
°e
Pulse Width Error
Logic State Width Error
Phase Error
5
3
ꢀ
45
45
15
ΔS
°e
Δφ
°e
Note: 3.3 kΩ pull-up resistors used on all encoder module outputs.
Frequency Derating Curves
Typical performance over extended operating range. These curves were derived using a ꢀ5 pF load with a 3.3k pull-up
resistor. Greater load capacitances will cause more error than shown in these graphs.
A
B
0
15
-40 °C
+25 °C
-40 °C
+85 °C
10
5
-5
+25 °C
+85 °C
-10
-15
0
-5
0
50
100
150
200
0
50
100
150
200
FREQUENCY (KHz)
FREQUENCY (KHz)
5
Recommended Codewheel and Codestrip Characteristics
Parameter
Symbol
Ww/Wb
Lw
Min.
Max.
Units
Notes
Window/Bar Ratio
Window Length (Rotary)
0.7
1.4
1.80
ꢀ.30
mm
(0.071)
(0.091)
(inch)
Absolute Maximum
Codewheel Radius (Rotary)
Rc
W1
Wꢀ
L
Rop + 3.40
(Rop + 0.134)
mm
(inch)
Includes eccen– tricity errors
Center of Post to Inside
Edge of Window
1.04
(0.041)
mm
(inch)
Center of Post to Outside
Edge of Window
0.76
(0.030)
mm
(inch)
Center of Post to Inside
Edge of Codestrip
3.60
(0.14ꢀ)
mm
(inch)
Optional Packages Available
3.8
0.150
(OPTICAL CENTER)
10.8
0.425
0.50
0.020
3.0
0.118
2.8
Ø
PIN 1 IDENTIFIER
7.0
0.110
0.8
5.5
0.217
0.031
0.276
6.40
0.252
12.6
0.496
4.34
0.171
4.2
0.167
3.9
0.152
0.14
1.7
0.067
0.006
15.0
0.591
7.5
0.295
3.9
0.154
2.00
0.079
2X Ø
20.2
0.795
10.1
0.398
1.8
0.071
9.8
0.386
MILLIMETERS
INCHES
0.25
0.010
DIMENSIONS ARE
LEAD THICKNESS:
Mounting Option #51 – Screwmount (Baseplane Mounting)
6
Optional Packages Available (cont’d.)
Mounting Option #52 – Backplane (Backplane Mounting)
Mounting Option #53 – Standard with Posts (Baseplane Mounting)
7
Optional Packages Available (cont’d.)
Mounting Option #54 – Tabless (Baseplane Mounting)
Mounting Option #55 – Backplane with Posts (Backplane Mounting)
8
Bent Lead Option
Mounting Considerations
EA
For linear motion, angular misalignment, EA, must be ≤ ꢀ degrees to achieve Encoding Characteristics.
All dimensions for mounting the module and codestrip should be measured with respect to the two mounting posts, shown above.
Recommended Screw Size: Mꢀ.5 x 0.45 or ꢀ-56
9
Recommended Wave Solder Conditions
Flux – RMA Water Soluble (per MIL-F-14ꢀ56D)
Process Parameters
1. Flux
4. Wave Solder ꢀ55°C, 1.ꢀ meters/minute line speed
ꢀ. Pre-heat 60 seconds total
Nominal preheat temp: 90°C
Min: 85°C
5. Hot Water Wash
1st: 30°C 45 seconds
ꢀnd: 70°C 90 seconds
Max: 110°C
6. Rinse
3. Solder Pot Zone
1st: ꢀ3°C 45 seconds
ꢀnd: ꢀ3°C 45 seconds
Nominal dip in time:
ꢀ.5 - 4.5 seconds
Min: ꢀ.5 seconds
Max: 5 seconds
PCB top side: 140 -160°C
PCB bottom side: ꢀ40 - ꢀ60°C
7. Dry
1st: 80°C 105 seconds
ꢀnd: 95°C 105 seconds
10
Ordering Information
HEDS-973
Option
Lead Bend
Resolution Options
Mounting Options
50 – Standard
51 – Screwmount
5ꢀ – Backplane
53 – Standard w/Posts
54 – Tabless
0 – Straight Leads
1 – Bent Leads
ꢀ – Straight Leads
3 – Bent Leads
A – 500 CPR, 11 mm Rop
B – 1000 CPR, 11 mm Rop
J – 10ꢀ4 CPR, 11 mm Rop
Q – 180 LPI, Linear
ꢀ – 300 LPI, Linear
1 – 360 LPI, Linear
55 – Backplane w/Posts
T – ꢀ000 CPR, ꢀ3.36 mm Rop
U – ꢀ048 CPR, ꢀ3.36 mm Rop
Note: Please contact factory for codewheel and codestrip information.
50
*
51
52
53
54
55
HEDS-9730
HEDS-9731
HEDS-973ꢀ/33
A
Q
ꢀ
1
B
J
*
*
*
*
A
Q
ꢀ
1
B
J
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
T
U
For product information and a complete list of distributors, please go to our web site: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2009 Avago Technologies. All rights reserved. Obsoletes 5988-8044EN
AV02-1747EN - January 19, 2009
相关型号：
©2020 ICPDF网 联系我们和版权申明