IC-PR Datasheet, PDF (2/18 Pages) IC-Haus GmbH – REFLECTIVE OPTO ENCODERS

iC-PR Series
REFLECTIVE OPTO ENCODERS
Rev A3, Page 2/18
DESCRIPTION
The iC-PR series are advanced optical, reflective,
lensless encoder iCs featuring integrated HD Phased
Array photosensors and a blue LED. They provide
high signal quality with relaxed alignment tolerances.
Differential digital ABZ outputs with or without inter-
polation or analog SIN/COS outputs with index are
available. Typical applications are incremental en-
coders for motor control.
Blue-enhanced photosensors are adapted to the short
wavelength of the embedded blue LED, and provide
low-jitter outputs due to improved signal contrast. The
unique assembly technology of the blue LED emitter
and sensors results in low optical crosstalk.
Low-noise transimpedance amplifiers, arranged in a
paired layout to ensure excellent channel matching,
are used to convert the sensor signals into voltages
of several hundred millivolts.
The devices feature a low power consumption. They
run at single-sided analog supplies of 4.5 V up to 5.5 V
and single-sided digital supplies of 3.0 V up to 5.5 V.
iC-PR4307
Code disc ∅:
Native CPR:
43.0 mm
720
iC-PR26xx
Code disc ∅:
Native CPR:
26.0 mm
250, 256, 360
iC-PR1456
Code disc ∅:
Native CPR:
14.0 mm
250, 256
iC-PR0464
Code disc ∅:
Native CPR:
4.0 mm
64
Various operation modes are selectable via tri-level
inputs SEL1 and SEL2: Digital outputs with native
(x1) or interpolated resolution (x2, x4, x8 or x16), ana-
log outputs or mixed analog/digital outputs, where
the latter one combines analog COS/SIN signals with
a digital index. The amplified analog output signals
allow for inspection and monitoring of encoder assem-
bly. Moreover, feeding external interpolation circuits
(e.g. iC-NQ, iC-TW8 or iC-TW28) is possible.
iC-PR256
Linear scale: 256 µm period length
General notice on materials under excessive conditions
Epoxy resins (such as solder resists, IC package and injection
molding materials, as well as adhesives) may show discoloration,
yellowing, and surface changes in general when exposed
longterm to high temperatures, humidity, irradiation, or due
to thermal treatments for soldering and other manufacturing
processes.
Index gating is also pin-selectable via input TZ: The
options are ungated (1 T), B-gated (0.5 T) or AB-gated
(0.25 T).
Via tri-level input EDC a minimal edge distance of
80 ns, 1 µs or 10 µs can be preset for digital operation
modes.
Equally, standard molding materials used for IC pack-
ages can show visible changes induced by irradiation, among
others when exposed to light of shorter wavelengths, blue light
for instance. Such surface effects caused by visible or IR LED
light are rated to be of cosmetic nature, without influence to the
chip’s function, its specifications and reliability.
Note that any other material used in the system (e.g.
varnish, glue, code disc) should also be verified for irradiation
effects.