HEDS-5700 Series
Panel Mount Optical Encoders
Data Sheet
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
* Note: For the HEDS-5700, Pin #2 is a No Connect. For the HEDS-5740, Pin #2 is Channel I, the index output.
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 applica tions
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 encod ing 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.
Optional Wiring
Color Code Table
Color Output
White A
Brown B
Red VCC
Black Gnd
Blue
(Three Channel)
I
Package Dimensions
2
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 clari cation is needed.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Notes
Storage Temperature TS-40 +85 °C
Operating Temperature TA-20 +85 °C
Vibration 20 g 20 Hz – 2 kHz
Supply Voltage VCC -0.5 7 V
Output Voltage VO-0.5 V
CC V
Output Current per Channel IO-1 5 mA
Shaft Load – Axial
– Radial
1 lb
1
Recommended Operating Conditions
Parameter Symbol Min. Max. Units Notes
Temperature T -20 +85 °C Noncondensing Atmosphere
Supply Voltage V
CC 4.5 5.5 V Ripple < 100 mVp-p
Rotational Speed – Drag
– Free Spinning
300 RPM
2000
Electrical Characteristics Over Recommended Operating Range, Typical at 25° C
Parameter Symbol Min. Typ. Max. Units Notes
Supply Current ICC 17 40 mA Two Channel
57 85 Three Channel
High Level Output Voltage V
OH 2.4 V IOH = -40 A Max.
Low Level Output Voltage V
OL 0.4 V IOL = 3.2 mA
Note:
1. If more source current is required, use a 3.2 K pullup resistor on each output.
3
Output Waveforms
Ordering Information
Mechanical Characteristics
Parameter Min. Typ. Max. Units Notes
Starting Torque – Static Drag 0.47
0.14
oz in
– Free Spinning
Dynamic Drag – Static Drag 1.1 oz in 100 RPM
– Free Spinning 0.70 2000 RPM
Rotational Life – Static Drag 1 x 106Revolutions 1 lb Load
– Free Spinning 12 x 106Revolutions 4 oz Radial Load
Mounting Torque of Nut 13 lb in
360 ± 5.5
180 ± 45
S1 S2 S3 S4 90 ± 45 TYPICAL
90 ± 45
CH A
CH B
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.
HEDS-57
Shaft Conguration
0 - ¼" dia. with no at
1 - 6 mm dia. with no at
2 - ¼" dia. with at
Drag Option
0 - Free Spinning
1 - Static Drag
Resolutions
(Cycles Per Revolution)
HEDS-570X 2 Channel
K - 96 CPRG- 360 CPR
C - 100 CPRA- 500 CPR
F - 256 CPRI- 512 CPR
HEDS-574X 3 Channel*
A - 500 CPR
Outputs
0 - 2 Channel
4 - 3 Channel
Mechanical
Conguration
0 - Pins
1 - 6" Coded Leads
*Please contact factory for other resolutions.
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
00 01 02 10 11 12
HEDS-5700# A * * *
C ****
F* **
G*
I**** *
K**
HEDS-5701# A * * *
C*
F** **
G*
H* *
I*
HEDS-5740# A *
