MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 518

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

Queued Analog-to-Digital Converter (QADC)
Advance Information
518
Figure 19-50
input pin is subjected to negative stress conditions.
positive stress conditions can activate a similar PNP transistor.
The current into the pin (I
determined by these equations:
Where:
V
V
V
R
R
Freescale Semiconductor, Inc.
Stress
EB
BE
Stress
Selected
For More Information On This Product,
Queued Analog-to-Digital Converter (QADC)
Figure 19-50. Input Pin Subjected to Negative Stress
Figure 19-51. Input Pin Subjected to Positive Stress
= Adjustable voltage source
= Parasitic PNP emitter/base voltage
= Parasitic NPN base/emitter voltage
= Source impedance (10 k resistor in
= Source impedance on channel selected for conversion
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V
shows an active parasitic bipolar NPN transistor when an
In
V
In
Figure 19-51
V
+
V
Stress
Stress
+
I
INJP
I
INJN
INJN
or I
=
R
R
10 k
=
Selected
Stress
R
on stressed channel)
R
10 k
V Stress V EB
-------------------------------------------------------------- -
Selected
Stress
–
---------------------------------------------- -
INJP
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
V Stress V BE
I
INJP
) under negative or positive stress is
I
In
R Stress
I
INJN
I
In
R Stress
–
PARASITIC
AN
AN
DEVICE
PARASITIC
AN
n+1
AN
–
n
DEVICE
n+1
n
PIN UNDER
–
ADJACENT
STRESS
V DDA
PIN UNDER
ADJACENT
PIN
STRESS
PIN
Figure 19-51
Figure 19-50
V
DDA
MOTOROLA
shows
and