MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 609

• Manufacturer Part Number: MPC564EVB
• Description: KIT EVAL FOR MPC561/562/563/564
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC564EVB

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC56x
• Data Bus Width: 32 bit
• Interface Type: RS-232, Ethernet
• For Use With/related Products: MPC561, 562, 563, 564
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Since the sample amplifier is powered by V
to but not exceeding V
output from the sample amplifier is clipped.
In addition, V
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 zero value.
Figure 14-48
top of the input signal range, V
conversion value of 0x3FE. At the bottom of the signal range, V
a minimum obtainable 10-bit conversion value of three.
14.6.3.1
Two important factors influencing performance in analog integrated circuits are supply filtering and
grounding. Generally, digital circuits use bypass capacitors on every V
analog sub-modules also. The distribution of power and ground is equally important.
Freescale Semiconductor
DDA
Analog Supply Filtering and Grounding
shows the results of reference voltages outside the range defined by V
RH
DDA
and V
and V
, the sample amplifier can never transfer a full-scale value. If V
3FE
3FD
3FC
3FB
3FA
3FF
8
7
6
5
4
3
2
1
0
DDA
RL
RL
must be within the range defined by V
is greater than or equal to V
and down to but not below V
.010
DDA
Figure 14-48. Errors Resulting from Clipping
MPC561/MPC563 Reference Manual, Rev. 1.2
is 10 mV lower than V
.020
Input in Volts (V
.030
DDA
and V
RH
5.100
= 5.12 V, V
SSA
SSA
SSA
, it can accurately transfer input signal levels up
RH
5.110
and the sample amplifier has accurately
. If the input signal is outside of this range, the
. This results in a maximum obtainable 10-bit
RL
SSA
DDA
QADC64E Clipping
= 0 V)
5.120
is 15 mV higher than V
and V
DD
5.130
/V
SSA
QADC64E Enhanced Mode Operation
SS
. As long as V
signal pair. This applies to
RL
RL
DDA
is less than V
and V
and V
RL
RH
RH
, resulting in
is less than
. If V
SSA.
SSA
At the
RH
, the
14-67
is