IC-MHM Datasheet, PDF (14/63 Pages) IC-Haus GmbH – 14-BIT ABSOLUTE ANGLE HALL ENCODER

iC-MHM
14-BIT ABSOLUTE ANGLE HALL ENCODER
REVERSE POLARITY PROTECTION
Rev D1, Page 14/63
The iC-MHM provides reverse polarity protection for
itself and external circuitry powered from its switched
VDDS pin and switched GNDS pin. The output line
drivers are also protected against reverse polarity and
short circuits. This means that an incorrect connection
of the device or a damaged cable will not harm the
iC-MHM or external circuitry connected to its VDDS
and GNDS pins.
Specifically, the following pins are protected against
reverse polarity: PSIN, NSIN, PCOS, NCOS, MAO,
NMAO, MA, NMA, SLI, NSLI, SLO, and NSLO. The
maximum voltage difference between these pins must
not exceed 6 V. In addition, GNDS must always be less
than or equal to VDDS.
Note: It is necessary to connect VDD to VDDS and
GND to GNDS, if reverse polarity is not used.
OVERVOLTAGE PROTECTION
It is recommended to provide transient overvoltage pro-
tection for the iC-MHM as shown in Figure 8. This is
especially important in applications where a long cable
may be used between the iC-MHM and its power supply
and data receivers.
Note: Circuit examples are provided for illustration
of principle. Additional components required for a
successful application may be omitted for clarity.
VDD
PSIN
SIN
NSIN
PCOS
COS
NCOS
LINE DRIVER
iC-MHM
RS422
LVDS
BISS INTERFACE
MAO
NMAO
MA
NMA
SLI
NSLI
SLO
NSLO
GND
PSIN
NSIN
PCOS
NCOS
R1
100
R2
100
GMF05C-HSF
D1
GMF05C-HSF
D2
Figure 8: Recommended Transient Overvoltage Protection
VDD
SMDJ5.0CA
D4
MAO
NMAO
MA
NMA
SLI
NSLI
SLO
NSLO
GND
GMF05C-HSF
D3