AEDR-850x
3 Channel Reflective Incremental Encoders
Data Sheet
Description
Features
The AEDR-850X encoder is the smallest 3 channels optical
encoder with digital outputs in the market employing
reflective technology for motion control purposes. The
encoder is designed to operate over -20° C to 85° C temperature range and hence suitable for both commercial
and even industrial end applications.
• World smallest 3 channels reflective technology
encoder.
The encoder houses an LED light source and a photodetecting circuitry in a single package. The small size of
3.95 mm (L) x 3.4 mm (W) x 0.9562 mm (H), allows it to be
even used in a wide range of miniature commercial application where size and space is a primary concern.
The AEDR-850X encoder offers two-channel quadrature
digital outputs and a 3rd channel, index digital outputs.
Being TTL compatible, the outputs of the AEDR-850X
encoder can be interfaced directly with most of the signal
processing circuitries. Hence the encoder provides great
design-in flexibility and easy integration into existing
systems.
R
• Surface mount leadless package 3.95 mm (L) x 3.4 mm
(W) x 0.9562 mm (H)
• 3 channels; two channel quadrature digital outputs
for direction sensing and a 3rd channel, Index digital
output.
• Build in interpolator, factor of 1x, 2x and 4x selectable
via external pinouts
• TTL compatible
• Single 5 V supply
• -20° C to 85° C absolute operating temperature
• Encoding resolution: 294 to 304 (lines/inch)
Applications
Ideal for high volume applications:
• Close Loop stepper Motors
• Miniature Motors
VCC
• Printers
• Copiers
VCC
Ch A
Ch B
Ch I
Signal
Processing
Circuitry
SEL 4X
SEL 2X
Gnd
• Card readers
Reflective Encoder
Gnd
• Scanners
• Projectors
• Consumer and Industrial Product Applications
Codewheel
Note: Drawing not to scale.
Note: Avago Technologies encoders are not recommended for use in safety critical applications, e.g., ABS braking
systems, power steering, life support systems and critical care medical equipment. Avago’s products and software are
not specifically designed, manufactured or authorized for sale as parts, components or assemblies for the planning, construction, maintenance or direct operation of a nuclear facility or for use in medical devices or applications. Customers
are solely responsible, and waive all rights to make claims against Avago or its suppliers, for all losses, damage, expense
or liability in connection with such use. Please contact your local sales representative if more clarification is needed.
