IC-PNH Datasheet, PDF (2/10 Pages) IC-Haus GmbH – PHASED ARRAY NONIUS ENCODERS

iC-PNH Series
preliminary
PHASED ARRAY NONIUS ENCODERS
Rev C4, Page 2/10
DESCRIPTION
The iC-PNH device series represents advanced op-
tical encoder ICs featuring monolithically integrated
photosensors arranged as an HD Phased Array, pro-
viding excellent signal fidelity at relaxed alignment
tolerances.
Its precision sine/cosine output signals allow for a
high-resolution interpolation by subsequent devices:
depending on the iC-PNH version, a singleturn po-
sition can be resolved with up to 24 bit utilizing the
3-channel nonius interpolation of iC-MN.
The typical application of iC-PNH devices are abso-
lute position encoders for motion control and drive
applications.
iC-PNH scans 5 tracks in total, whereof 3 analog
tracks feature phased-arrays of multiple photosen-
sors each per track, generating positive and negative
going sine signals, as well as positive and negative
going cosine signals. An excellent matching and com-
mon mode behavior of the differential signal paths is
obtained by a paired amplifier design. Due to a typical
transimpedance gain of 1 MΩ, the output signal level
reaches a few hundred millivolts already at low light
conditions.
Additional 2 digital tracks are implemented for sector
detection, to separate a repeated nonius scale. For
instance, the standard code discs made for iC-PNH
feature two nonius scales per turn and provide a 2-bit
Gray code to distinguish this.
Sector detection can be used already at low supply
voltages from 1.6 V up; the power consumption is
low unless other sections are biased. Full operation
requires a single-sided supply of 4.1 V to 5.5 V.
iC-PNH26xx Series
Optical radius 11.0 mm, code disc ∅ 26.0 mm;
iC-PNH2612: 512 CPR (2x 256/255/240 CPR)
iC-PNH2624: 1024 CPR (2x 512/511/480 CPR)
iC-PNH2628: 128 CPR (2x 64/63/56 CPR)
iC-PNH33xx Series
Optical radius 14.5 mm, code disc ∅ 33.2 mm;
iC-PNH3312: 512 CPR (2x 256/255/240 CPR)
iC-PNH3348 Encoder blue^®: 2048 CPR
(2x 1023/1024/992 CPR)
A separated datasheet is available for iC-PNH En-
coder blue^® series devices.
iC-PNH39xx Series
Optical radius 17.5 mm, code disc ∅ 39.0 mm;
iC-PNH3948: 2048 CPR (2x 1023/1024/992 CPR)
Encoder blue is a trademark of iC-Haus GmbH.