Information

6.6.1 ADC electrical specifications
The 16-bit accuracy specifications listed in Table 23 and Table 24 are achievable on the
differential pins ADCx_DP0, ADCx_DM0.
All other ADC channels meet the 13-bit differential/12-bit single-ended accuracy
specifications.
6.6.1.1 16-bit ADC operating conditions
Table 23. 16-bit ADC operating conditions
Symbol Description Conditions Min.
Typ.
1
Max. Unit Notes
V
DDA
Supply voltage Absolute 1.71 — 3.6 V
ΔV
DDA
Supply voltage Delta to V
DD
(V
DD
-
V
DDA
)
-100 0 +100 mV 2
ΔV
SSA
Ground voltage Delta to V
SS
(V
SS
-
V
SSA
)
-100 0 +100 mV 2
V
REFH
ADC reference
voltage high
1.13 V
DDA
V
DDA
V
V
REFL
Reference
voltage low
V
SSA
V
SSA
V
SSA
V
V
ADIN
Input voltage V
REFL
— V
REFH
V
C
ADIN
Input
capacitance
• 16 bit modes
• 8/10/12 bit
modes
—
—
8
4
10
5
pF
R
ADIN
Input resistance — 2 5 kΩ
R
AS
Analog source
resistance
13/12 bit modes
f
ADCK
< 4MHz — — 5 kΩ
3
f
ADCK
ADC conversion
clock frequency
≤ 13 bit modes
1.0 — 18.0 MHz
4
f
ADCK
ADC conversion
clock frequency
16 bit modes
2.0 — 12.0 MHz
4
C
rate
ADC conversion
rate
≤ 13 bit modes
No ADC hardware
averaging
Continuous
conversions enabled,
subsequent conversion
time
20.000 — 818.330 Ksps
5
Table continues on the next page...
Peripheral operating requirements and behaviors
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
36 Freescale Semiconductor, Inc.