Motorola MCF5281 Manuel D’Utilisation
27-72
MCF5282 User’s Manual
MOTOROLA
Signal Connection Considerations
Figure 27-52. External Multiplexing of Analog Signal Sources
CP
CSAMP
CP
CSAMP
C
In
= C
P
+ C
SAMP
RMUXOUT
RSource
2
Analog Signal Source
Filtering and
Interconnect
Interconnect
Typical MUX Chip
Interconnect
QADC
~
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
CMUXOUT
(MC54HC4051, MC74HC4051,
MC54HC4052, MC74HC4052,
MC54HC4053, etc.)
RSource2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
RSource
2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
RSource
2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
RSource
2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
RSource
2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
RSource
2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
RSource
2
CFilter
CSource
RFilter
2
CMUXIN
0.01
µF
1
CFilter
RFilter
2
0.01
µF
1
1. Typical Value
2. R
2. R
Filter
, Typically 10 k
Ω–20 kΩ
Notes:
RSource
2
CSource
CPCB
CPCB
~
~
~
~
~
~
~
~