HEDS-5700 Series
Panel Mount Optical Encoders
Data Sheet
Description
The HEDS-5700 series is a family of low cost, high per-
formance, 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 wave-
forms which are 90 degrees out of phase to provide
position and direction information. The HEDS-5740 Series
provides a third Index Channel.
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.
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
Optional Wiring
Color Code Table
Color
Output
White
Brown
Red
Black
Blue
(Three Channel)
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.
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 recommend-
ed for use in safety critical applications. Eg. ABS braking
systems, power steering, life support systems and critical
care medical equipment. Please contact sales representa-
tive 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
V
CC
V
O
I
O
-0.5
-0.5
-1
Symbol
T
S
T
A
Min.
-40
-20
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 – Drag
– Free Spinning
Symbol
T
V
CC
Min.
-20
4.5
300
2000
Max.
+85
5.5
RPM
Units
°C
V
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
Min.
Typ.
17
57
Max.
40
85
Units
mA
V
Notes
Two Channel
Three Channel
I
OH
= -40
A
Max.
I
OL
= 3.2 mA
2.4
0.4
V
Note:
1. If more source current is required, use a 3.2 K pullup resistor on each output.
2
Mechanical Characteristics
Parameter
Starting Torque – Static Drag
– Free Spinning
Dynamic Drag
Rotational Life
– Static Drag
– Free Spinning
– Static Drag
– Free Spinning
Mounting Torque of Nut
1 x 10
6
12 x 10
6
13
lb in
1.1
0.70
Revolutions
Revolutions
Min.
Typ.
0.47
Max.
0.14
Units
oz in
oz in
Notes
100 RPM
2000 RPM
1 lb Load
4 oz Radial Load
Output Waveforms
360 ± 5.5
CH A
180 ± 45
S1
S2
S3
S4
90 ± 45 TYPICAL
CH B
90 ± 45
CH I
Notes:
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
Resolutions
(Cycles Per Revolution)
HEDS-570X 2 Channel
K - 96 CPRG- 360 CPR
C - 100 CPRA- 500 CPR
F - 256 CPRI- 512 CPR
Drag Option
0 - Free Spinning
1 - Static Drag
Shaft Configuration
0 - ¼" dia. with no flat
1 - 6 mm dia. with no flat
2 - ¼" dia. with flat
Mechanical
Configuration
0 - Pins
1 - 6" Coded Leads
HEDS-574X 3 Channel*
A - 500 CPR
*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 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 © 2005-2011 Avago Technologies. All rights reserved. Obsoletes 5988-5856EN
AV02-3575EN - June 11, 2011
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