IC-HF Datasheet, PDF (18/36 Pages) IC-Haus GmbH – 6-CH. ENCODER LINK, RS-422 DRIVER/RECEIVER

iC-HF
preliminary
6-CH. ENCODER LINK, RS-422 DRIVER/RECEIVER
Rev C1, Page 18/36
SENSOR
VDD
GND
1 μF
A
B
Z
U
V
W
ERROR MONITOR
NERR
VDDS
GNDS
REVERSE POLARITY PROTECTION
VDD
GND
3...5.5V
1 μF
X1
NX1
X2
NX2
X3
NX3
X4
X5
X6
PTC
ECM
OEN
FMSEL1
FMSEL2
NERRI
BYP EBIS TRI
CONTROL
LOGIC
OVT
PoDo
1
RS422
HIGH Z
Q1
HIGH Z ^NQ1
Q2
HIGH Z
NQ2
Q3
HIGH Z
NQ3
Q4
HIGH Z
NQ4
Q5
HIGH Z
NQ5
Q6
HIGH Z
NQ6
BYPR
ENCODER LINK
REQUEST
DETECTION
OVT
PoDo
OVERTEMP
POWER DOWN
Q1
NQ1
NERR
iC-HF
A
B
Z
U
V
W
to mC
NERR
Figure 20: Example of connection of a sensor exceeding the maximum permissible load current.
Figure 21 shows an alternative example. In this case, but it is however not recommended. Connecting VDD
VDD and GND lines are shortcircuited with VDDS and and GND to VDDS and GNDS prevents having reverse
GNDS lines. This configuration option is permitted, polarity protection in iC-HF.