WM_PRJ_Q2400_PTS_005 -007
18th January 2006
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2.2.6.4 PCB constraints for SIM interface
•
For the SIM interface, length of the track between the WISMO module and
the SIM connector should be as short as possible. Maximum length
recommended is 10 cm.
•
ESD protection is mandatory on the SIM lines if access from outside of the
SIM connector is possible.
2.3 Analog I/O implementation
2.3.1 Analog to Digital Converter (ADC) inputs
Two Analog to Digital Converter are available on the WISMO Quik Q24x6 sub-
series:
The first one (AUXV0) is a general purpose converter,
The second one (BAT_TEMP) is used for battery temperature monitoring.
These converters have a 10-bit resolution, ranging from 0 to 2.8 V.
Typical application:
GND
VCC
NTC
AUXV0
General
purpose
ADC input
GND
VCC
NTC
BAT_TEMP
Battery
temperature
monitoring
Figure 11: Example of ADC input implementation
