K22P48M50SF4 Datasheet, PDF (34/55 Pages) Freescale Semiconductor, Inc – K22 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
6.6.1 ADC electrical specifications
The 16-bit accuracy specifications listed in Table 24 and Table 25 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 24. 16-bit ADC operating conditions
Symbol
V_DDA
ΔV_DDA
ΔV_SSA
V_REFH
V_REFL
V_ADIN
C_ADIN
Description
Conditions
Supply voltage Absolute
Supply voltage
Ground voltage
ADC reference
voltage high
Delta to V_DD (V_DD-V_DDA)
Delta to V_SS (V_SS - V_SSA)
ADC reference
voltage low
Input voltage
Input capacitance • 16-bit mode
• 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
Notes
2
2
R_ADIN
R_AS
Input resistance
Analog source
resistance
13-/12-bit modes
f_ADCK < 4 MHz
—
2
5
kΩ
3
—
—
5
kΩ
f_ADCK
ADC conversion ≤ 13-bit mode
clock frequency
1.0
—
18.0
MHz
4
f_ADCK
ADC conversion 16-bit mode
clock frequency
2.0
—
12.0
MHz
4
C_rate ADC conversion ≤ 13 bit modes
5
rate
No ADC hardware averaging 20.000
—
818.330
Ksps
Continuous conversions
enabled, subsequent
conversion time
C_rate ADC conversion 16-bit mode
5
rate
No ADC hardware averaging 37.037
—
461.467
Ksps
Continuous conversions
enabled, subsequent
conversion time
1. Typical values assume V_DDA = 3.0 V, Temp = 25 °C, f_ADCK = 1.0 MHz unless otherwise stated. Typical values are for
reference only and are not tested in production.
2. DC potential difference.
K22 Sub-Family Data Sheet Data Sheet, Rev. 3, 08/2012.
34
Freescale Semiconductor, Inc.