IC-PT2610 Datasheet, PDF (8/11 Pages) IC-Haus GmbH – 6-CH. PHASED ARRAY OPTO ENCODER (26-1000)

iC-PT 2610
preliminary
6-CH. PHASED ARRAY OPTO ENCODER (26-1000)
DIGITAL OUTPUT SIGNALS
Rev B3, Page 8/11
T
PA
PB
AB-gated
PZ
B-gated
T/4 T/4 T/4 T/4
ö
C
ungated
U
V
W
C/6 C/6 C/6 C/6 C/6 C/6
Figure 1: Encoder quadrature signals and motor
commutation signals.
iC-PT2610’s phased array design determines the opti-
cal radius (11.0 mm) and the cycles per revolution for
the A and B encoder quadrature signals (1000 CPR
native, respectively 2000 CPR interpolated).
The pulse count, period length and phase shift for the
U, V, W commutation signals is determined by the code
disc.
Sampling is supported by code disc PT15S 26-1000
providing 4 CPR each for U/V/W, with a period length
of 90 degrees (C).
A phase shift of 0 degrees (ϕ) between U and Z edges
must be considered during alignment. Ideally, the ris-
ing edge of U meets the index Z.
For detailed specifications, refer to the relevant code
disc datasheet, available separately.
ANALOG OUTPUT SIGNALS
GND
CA
T1
iC-PTxxxx
VCC
SEL
PA
PB
PZ
U
GND
CA
T1
iC-PTxxxx
VCC
SEL
PA
PB
PZ
U
Figure 2: Analog signal output (pin SEL open).
When the operating mode selection input SEL is left
open, all digital outputs are disabled and analog out-
put signals are available for test and alignment.
Figure 3: Analog/digital signal output for
oQFN32-5x5-3 (pin SEL open).
The analog output signals may be used to higher the
encoder’s resolution by an external interpolation IC.
If analog signals are desired permanently, noise immu-
nity can be improved by wiring pin SEL to an external
VCC/2 reference.
In this case, using package oQFN32-5x5-3 may be
considered to obtain analog signals at PA/PB/PZ and
NA/NB/NZ outputs connecting the interpolation IC, to-
gether with digital signals at U/V/W connecting a line
driver.
Special attention to the PCB layout should be paid to
avoid cross talk; analog and digital lines should be sep-
arated carefully.