HEDS-5700 Series
Panel Mount Optical Encoders
Data Sheet
Description
The HEDS-5700 series is a family of low cost, high
performance, optical incremental encoders with
mounted shafts and bushings. The HEDS-5700 is
available with tactile feedback for hand operated
panel mount applications, or with a free spinning
shaft for applications requiring a pre-assembled
encoder for position sensing.
The encoder contains a collimated LED light source
and special detector circuit which allows for high
resolution, excellent encoding performance, long
rotational life, and increased reliability. The unit
outputs two digital waveforms which are 90 degrees
out of phase to provide position and direction
information. The HEDS-5740 Series provides a third
Index Channel.
Features
• Two channel quadrature output with optional index
pulse
• Available with or without static drag for manual or
mechanized operation
• High resolution: up to 512 CPR
• Long rotational life: >1 million revolutions
• –20 to 85°C operating temperature range
• TTL quadrature output
• Single 5 V supply
• Available with color coded leads
Package Dimensions
THREAD 3/8-32
NUT 3/8-32 x 7/16"
OPTIONAL WIRING
COLOR CODE TABLE
COLOR
WHITE
BROWN
RED
BLACK
BLUE
(THREE
CHANNEL)
OUTPUT
A
B
V
CC
GND
I
*
*Note: For the HEDS-5700, Pin #2 is a No Connect.
For the HEDS-5740, Pin #2 is Channel I, the index output.
The HEDS-5700 is quickly and
easily mounted to a front panel
using the threaded bushing, or it
can be directly coupled to a
motor shaft (or gear train) for
position sensing applications.
Applications
The HEDS-5700 with the static
drag option is best suited for
applications requiring digital
information from a manually
operated knob. Typical front
panel applications include
instruments, CAD/CAM systems,
and audio/video control boards.
The HEDS-5700 without static
drag (free spinning) is best
suited for low speed,
mechanized operations. Typical
applications are copiers, X-Y
tables, and assembly line
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.
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Vibration
Supply Voltage
Output Voltage
Output Current per Channel
Shaft Load – Axial
– Radial
Symbol
T
s
T
a
V
CC
V
O
I
O
Min.
-40
-20
-0.5
-0.5
-1
Max.
+85
+85
20
7
V
CC
5
1
1
Units
°C
°C
g
V
V
mA
lb
Notes
20 Hz - 2 kHz
Recommended Operating Conditions
Parameter
Temperature
Supply Voltage
Rotational Speed
Symbol
T
V
CC
– Drag
– Free Spinning
Min.
-20
4.5
Max.
+85
5.5
300
2000
Units
°C
V
RPM
Notes
Noncondensing Atmosphere
Ripple <100 mV
p-p
Electrical Characteristics
Over Recommended Operating Range, Typical at 25°C
Parameter
Supply Current
High Level Output Voltage
Low Level Output Voltage
Symbol
I
CC
V
OH
V
OL
2.4
0.4
Min.
Typ.
17
57
Max.
40
85
V
V
Units
mA
Notes
Two Channel
Three Channel
I
OH
= -40
µA
Max.
I
OL
= 3.2 mA
Note:
If more source current is required, use a 3.2 K pullup resistor on each output.
2
Mechanical Characteristics
Parameter
Starting Torque
Dynamic Drag
Rotational Life
– Static Drag
– Free Spinning
– Static Drag
– Free Spinning
– Static Drag
– Free Spinning
1 x 10
6
12 x 10
6
13
Min.
Typ.
0.47
0.14
1.1
0.70
oz in
Revolutions
Revolutions
lb in
100 RPM
2000 RPM
1 lb Load
4 oz Radial Load
Max.
Units
oz in
Notes
Mounting Torque of Nut
Output Waveforms
360 ± 5.5
CH A
180 ± 45
S1
S2
S3
S4
90 ± 45 TYPICAL
CH B
90 ± 45
CH I
NOTE:
ALL VALUES ARE IN ELECTRICAL DEGREES, WHERE 360° e = 1 CYCLE OF RESOLUTION.
ERRORS ARE WORST CASE OVER ONE REVOLUTION.
CH B LEADS CH A FOR COUNTERCLOCKWISE ROTATION.
CH A LEADS CH B FOR CLOCKWISE ROTATION.
Ordering Information
HEDS-57
Outputs
0 - 2 Channel
4 - 3 Channel
Mechanical
Configuration
0 - Pins
1 - 6" Coded Leads
Resolutions
(Cycles Per Revolution)
HEDS-570X 2 Channel
K - 96 CPR
G - 360 CPR
C - 100 CPR
A - 500 CPR
F - 256 CPR
I - 512 CPR
HEDS-574X Three Channel*
A - 500 CPR
Drag Option
0 - Free Spinning
1 - Static Drag
Shaft Configuration
0 - 1/4" dia. with no flat
1 - 6 mm dia. with no flat
2 - 1/4" dia. with flat
*Please contact factory for other resolutions.
3
00
HEDS-5700#
A
C
F
G
I
K
HEDS-5701#
A
C
F
G
H
I
HEDS-5740#
A
*
*
*
*
*
*
01
*
*
02
*
*
10
*
*
11
*
*
12
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
For product information and a complete list of distributors, please go to our website:
www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies, Pte. in the United States and other countries.
Data subject to change. Copyright © 2006 Avago Technologies Pte. All rights reserved. Obsoletes 5988-2565EN
5988-5856EN April 10, 2006
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