iC-NQL
13-bit Sin/D CONVERTER WITH SSI INTERFACE
Rev B1, Page 21/24
APPLICATION HINTS
Principle Input Circuits
Figure 18: Input circuit for current signals of 11 µA.
This circuit does not permit offset calibra-
tion.
Figure 17: Input circuit for voltage signals of 1 Vpp
with no ground reference. When grounds
are not separated the connection NSIN
to VREF must be omitted.
Figure 19: Input circuit for single-sided voltage or
current source signals with ground refer-
ence (adaptation via resistors R3, R4).
Figure 20: Simplified input wiring for single-sided
voltage signals with ground reference.
Figure 22: Combined input circuit for 11 µA, 1 Vpp
(with 120 Ω termination) or TTL encoder
signals. RS3/4 and CS1 serve as protec-
tion against ESD and transients.
Figure 21: Input circuit for differential current sink
sensor outputs, eg. using Opto Encoder
iC-WG.
ICHAUS [ IC-HAUS GMBH ]
