HEDS-9730, HEDS-9731
Small Optical Encoder Modules 480lpi Digital Output
Data Sheet
Description
The HEDS-973X is a high performance incremental
encoder module. When operated in conjunction with
either a codewheel or codestrip, this module detects
rotary or linear position. The encoder consists of a lensed
LED source and a detector IC enclosed in a small C-
shaped plastic package. Due to a highly collimated light
source and a unique photodetector array, the module is
extremely tolerant to mounting misalignment.
The two channel digital outputs and 3.3V supply input
are accessed through four solder plated leads located on
2.54mm (0.1inch) centers.
The standard HEDS-973X is designed for use with an ap-
propriate optical radius codewheel or linear codestrip.
Other options are available. Please contact the factory for
more information.
Features
•
Small Size
•
High Resolution
•
Two Channel Quadrature Output
•
Linear and Rotary Applications
•
No Signal Adjustment required
•
TTL or 3.3V/5V CMOS Compatible
•
Wave Solderable
•
Lead-free Package
•
-40°C to 85°C Operating Temperature
•
Single 3.3V Supply
Applications
The HEDS-973X provides sophisticated motion detection,
making closed loop control very cost competitive. Typical
applications include printers, plotters, copiers and office
automation equipment.
Note:
Avago Technologies’ encoders are not recommended for use in safety
critical applications, e.g., ABS braking systems and critical-care medical
equipment. Please contact a sales representative if more clarification is
needed.
Block Diagram
RESISTOR
LENS
PHOTO-
DIODES COMPARATORS
A
+
A -
B
+
VCC
3
CHANNEL A
2
CHANNEL B
4
LED
B -
SIGNAL
PROCESSING
CIRCUITRY
GND
1
EMITTER SECTION
CODE
WHEEL
DETECTOR SECTION
Figure 1
ESD WARNING: NORMAL HANDLING PRECAUTIONS SHOULD BE TAKEN TO AVOID STATIC DISCHARGE.
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
