mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 595

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

Because the sample amplifier is powered by V
up to but not exceeding V
the output from the sample amplifier is clipped.
In addition, V
than or equal to V
transferred the input signal, resolution is ratiometric within the limits defined by V
greater than V
sample amplifier can never transfer a 0 value.
Figure 28-45
top of the input signal range, V
conversion value 0x03fe. At the bottom of the signal range, V
a minimum obtainable 10-bit conversion value of 0x0003.
Freescale Semiconductor
shows the results of reference voltages outside the range defined by V
RH
DDA
16 Channels Total
and V
DDA
, the sample amplifier can never transfer a full-scale value. If V
, and V
RL
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
DDA
must be within the range defined by V
Figure 28-44. Equivalent Analog Input Circuitry
RL
DDA
and down to but not below V
is greater than or equal to V
is 10 mV lower than V
DDA
C
Sample
and V
AMP
V
V
SSA
DDA
RH
SSA
SSA.
. This results in a maximum obtainable 10-bit
SSA
, it can accurately transfer input signal levels
SSA
If the input signal is outside of this range,
, and the sample amplifier has accurately
DDA
is 15 mV higher than V
S/H
Comparator
Queued Analog-to-Digital Converter (QADC)
V
and V
V
RH
RL
SSA
. As long as V
RL
RL
DDA
is less than V
and V
and V
RL
RH
, resulting in
SSA
. If V
RH
SSA
. At the
is less
RH
28-57
, the
is