H
Miniature Panel Mount
Optical Encoders
Technical Data
HRPG Series
Features
• Miniature Size
• Smooth Turning and
Detented Options
• Multiple Mounting Bracket
Options
• Uses Optical Reflective
Technology
• Quadrature Digital Output
• Small Footprint for Versatile
Mounting
• TTL Compatible
The HRPG uses optical reflective
technology providing accuracy
and reliability to the encoder. An
LED emits a beam of light onto
the specular codewheel surface.
When the light strikes the surface,
it projects the image of the code-
wheel back on the photodetector,
causing the output to change. The
entire detector circuit is on one
IC, thus the part is less sensitive
to temperature and other environ-
mental variations.
Description
The HRPG series is a family of
miniature panel mount optical
encoders, also known as Rotary
Pulse Generators (RPG) and
digital potentiometers. The HRPG
is designed to be mounted on a
front panel and used as a rotary,
data-entry device. The HRPG is
very flexible for numerous
applications due to the many
configuration options available.
These options include detents or
smooth, multiple terminations,
versatile mounting capabilities,
and different shaft configurations.
Applications
Typical applications for the
Rotary Pulse Generator include
front panel instruments, audio/
visual boards, and other devices
requiring digital output from a
turning knob.
5965-5890E
2-119
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Vibration
Supply Voltage
Output Voltage
Output Current Per Channel
Shaft Load – Axial
Shaft Load – Radial
Revolution Life
Symbol
T
S
T
A
V
CC
V
O
I
O
Min.
-40
0
-0.5
-0.5
-1
Max.
+85
+70
20
7
V
CC
5
4.0
0.1
Units
°C
°C
g
V
V
mA
N
Nm
Rev
Notes
20 Hz to 2 kHz
10
6
10
6
Revolutions
10
6
Revolutions
At Maximum Loads
Recommended Operating Conditions
Parameter
Temperature
Supply Voltage
Rotation Speed – Detented
– Smooth
Symbol
T
V
CC
Min.
0
4.5
Max.
+70
5.5
200
300
Units
°C
V
RPM
RPM
Notes
Noncondensing Atmosphere
Ripple < 100 mV
P-P
Electrical Characteristics
Over Recommended Operating Range
Parameter
Supply Current
High Level Output Voltage
Low Level Output Voltage
Symbol
I
CC
V
OH
V
OL
Min.
2.4
0.4
Max.
40
Units
mA
V
V
Notes
I
OH
= -40
µA
Max.
I
OL
= 3.2 mA
Output Waveforms
2-120
Mechanical Configurations
Termination Options
Option R – Pins Rear with Bracket
HRPG-AXXX#XXR
2-121
Option F – Pins Front with Bracket
HRPG-AXXX#XXF
2-122
Option C – Cable Connector with Strain Relief
HRPG-AXXX#XXC
2-123
