SPMCK16Z4MPV20 datasheet(206/500 Pages) FREESCALE

206 / 500 page

ANALOG-TO-DIGITAL CONVERTER

M68HC16 Z SERIES

8-20

USER’S MANUAL

Figure 8-9 External Multiplexing of Analog Signal Sources

CIN

CSAMPLE

CIN

CSAMPLE

CIN = CIN + CSAMPLE

R MUXOUT

R SOURCE2

ANALOG SIGNAL SOURCE

FILTERING AND

INTERCONNECT

TYPICAL MUX CHIP

INTERCONNECT

ADC

ADC EXT MUX EX

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

C MUXOUT

(MC54HC4051, MC74HC4051,

MC54HC4052, MC74HC4052,

MC54HC4053, ETC.)

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

R SOURCE2

C FILTER

C SOURCE

R FILTER2

C MUXIN

0.1

µF1

C FILTER

R FILTER2

0.1

µF1

1. TYPICAL VALUE

2. RFILTER TYPICALLY 10KΩ–20KΩ.

NOTES:

R SOURCE2

C SOURCE

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