Peripheral operating requirements and behaviors
6.4 Analog
6.4.1 ADC characteristics
Table 12. 5 V 12-bit ADC operating conditions
Characteri
stic
Conditions
Symb
Min
Typ1
Max
Unit
Comment
Supply
voltage
Absolute
VDDA
ΔVDDA
ΔVSSA
2.7
—
0
5.5
V
—
Delta to VDD (VDD-VDDAD
)
-100
-100
+100
+100
mV
mV
1
Ground
voltage
Delta to VSS (VSS-VSSA
)
0
Input
voltage
VADIN
CADIN
RADIN
RAS
VREFL
—
—
4.5
3
VREFH
5.5
V
Input
capacitance
pF
kΩ
kΩ
Input
resistance
—
5
—
Analog
source
resistance
12-bit mode
fADCK > 4 MHz
fADCK < 4 MHz
External to
MCU
—
—
—
—
2
5
•
•
10-bit mode
fADCK > 4 MHz
fADCK < 4 MHz
—
—
—
—
—
—
5
•
•
10
10
8-bit mode
(all valid fADCK
)
ADC
conversion
clock
High speed (ADLPC=0)
Low power (ADLPC=1)
fADCK
0.4
0.4
—
—
8.0
4.0
MHz
—
frequency
1. Typical values assume VDDA = 5.0 V, Temp = 25°C, fADCK=1.0 MHz unless otherwise stated. Typical values are for
reference only and are not tested in production.
1. DC potential difference.
KE02 Sub-Family Data Sheet, Rev3, 07/2013.
24
Freescale Semiconductor, Inc.
FREESCALE [ Freescale ]
