MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 510

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Queued Analog-to-Digital Converter (QADC)
19.11.2 Analog Power Pins
Advance Information
510
extreme cases, inductors or ferrite beads may be necessary if noise or
RF energy is present. Series resistance is not advisable, because there
is an effective DC current required from the reference voltage by the
internal resistor string in the RC DAC array. External resistance may
introduce error in this architecture under certain conditions. Any series
devices in the filter network should contain a minimum amount of DC
resistance.
For accurate conversion results, the analog reference voltages must be
within the limits defined by V
subsection.
The analog supply pins (V
reference voltages (V
Figure 19-44
Because the sample amplifier is powered by V
accurately transfer input signal levels up to but not exceeding V
down to but not below V
the output from the sample amplifier is clipped.
16 CHANNELS TOTAL
Freescale Semiconductor, Inc.
For More Information On This Product,
Queued Analog-to-Digital Converter (QADC)
Figure 19-44. Equivalent Analog Input Circuitry
Go to: www.freescale.com
is a diagram of the analog input circuitry.
RH
SSA
and V
DDA
. If the input signal is outside of this range,
DDA
and V
RL
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
) and of the analog multiplexer inputs.
and V
CP
SAMPLE
AMP
SSA
SSA
V
V
DDA
) define the limits of the analog
SSA
, as explained in this
DDA
S/H
RC DAC
COMPARATOR
and V
V
V
RH
RL
SSA
, it can
MOTOROLA
DDA
and