K20P48M50SF0 Datasheet, PDF (36/60 Pages) Freescale Semiconductor, Inc – K20 Sub-Family

Peripheral operating requirements and behaviors
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
V_DDA
ΔV_DDA
Description
Supply voltage
Supply voltage
ΔV_SSA Ground voltage
V_REFH
V_REFL
V_ADIN
C_ADIN
ADC reference
voltage high
Reference
voltage low
Input voltage
Input
capacitance
Conditions
Absolute
Delta to V_DD (V_DD-
V_DDA)
Delta to V_SS (V_SS-
V_SSA)
• 16 bit modes
• 8/10/12 bit
modes
Min.
1.71
-100
-100
1.13
V_SSA
V_REFL
—
—
Typ.¹
—
0
0
V_DDA
V_SSA
—
8
4
Max.
3.6
+100
+100
V_DDA
V_SSA
V_REFH
10
5
Unit
V
mV
mV
V
V
V
pF
R_ADIN
R_AS
Input resistance
Analog source
resistance
13/12 bit modes
f_ADCK < 4MHz
—
2
5
kΩ
—
—
5
kΩ
f_ADCK
f_ADCK
C_rate
ADC conversion ≤ 13 bit modes
clock frequency
1.0
—
ADC conversion 16 bit modes
clock frequency
2.0
—
ADC conversion
rate
≤ 13 bit modes
No ADC hardware
averaging
20.000
—
Continuous
conversions enabled,
subsequent conversion
time
Table continues on the next page...
18.0
12.0
818.330
MHz
MHz
Ksps
Notes
2
2
3
4
4
5
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
36
Freescale Semiconductor, Inc.