IC-MN_16 Datasheet, PDF (41/62 Pages) IC-Haus GmbH – 25-BIT NONIUS ENCODER WITH 3-CH. SAMPLING 13-BIT Sin/D INTERPOLATION

iC-MN 25-BIT NONIUS ENCODER
WITH 3-CH. SAMPLING 13-BIT Sin/D INTERPOLATION
CONFIGURATION OF DIGITAL DRIVER OUTPUTS
Rev F2, Page 41/62
The digital outputs SLO and NSLO can be used as ei-
ther a push-pull, lowside or highside driver. The mode
of operation is determined by DTRI. The driving capa-
bility is set via the short-circuit current parameter.
In order to meet RS422 specifications a short-circuit cur-
rent of 50 mA should be selected as well as to reduce
the internal power dissipation. The driving capability
can be reduced when external line drivers are used.
In order to reduce crosstalk and to improve EMC the
slew rate can be selected to suit the line length. If
the edge steepness is reduced to 300 ns the maxi-
mum permissible transmission frequency is limited to
ca. 300 kHz if RS422 specifications are to be adhered
to.
DTRI
Code
00
01
10
11
Addr. 0x48; bit 3:2
Operating mode
Push-pull operation
Highside driver mode (P channel open drain)
Lowside driver mode (N channel open drain)
Not permitted
Table 67: Driver output mode
DSC
Code
00
01
10
11
DSR
Code
00
01
10
11
Addr. 0x48; bit 1:0
Short-circuit current
50 mA
20 mA
4 mA
1.2 mA
Table 68: Driver short-circuit current
Addr. 0x48; bit 5:4
Slew rate
Permissible transmission
frequency
10 ns
10 MHz max.
30 ns
3 MHz max.
100 ns
1 MHz max.
300 ns
300 kHz max.
Table 69: Driver slew-rate