Datasheet

Table 28. 16-bit ADC characteristics (V
REFH
= V
DDA
, V
REFL
= V
SSA
) (continued)
Symbol Description Conditions
1
Min. Typ.
2
Max. Unit Notes
E
IL
Input leakage
error
I
In
× R
AS
mV I
In
=
leakage
current
(refer to
the MCU's
voltage
and current
operating
ratings)
Temp sensor
slope
Across the full temperature
range of the device
1.55 1.62 1.69 mV/°C
V
TEMP25
Temp sensor
voltage
25 °C 706 716 726 mV
1. All accuracy numbers assume the ADC is calibrated with V
REFH
= V
DDA
2. Typical values assume V
DDA
= 3.0 V, Temp = 25°C, f
ADCK
= 2.0 MHz unless otherwise stated. Typical values are for
reference only and are not tested in production.
3. The ADC supply current depends on the ADC conversion clock speed, conversion rate and the ADLPC bit (low power).
For lowest power operation the ADLPC bit must be set, the HSC bit must be clear with 1 MHz ADC conversion clock
speed.
4. 1 LSB = (V
REFH
- V
REFL
)/2
N
5. ADC conversion clock < 16 MHz, Max hardware averaging (AVGE = %1, AVGS = %11)
6. Input data is 100 Hz sine wave. ADC conversion clock < 12 MHz.
7. Input data is 1 kHz sine wave. ADC conversion clock < 12 MHz.
Figure 13. Typical ENOB vs. ADC_CLK for 16-bit differential mode
Peripheral operating requirements and behaviors
K20 Sub-Family Data Sheet Data Sheet, Rev. 7, 02/2013.
Freescale Semiconductor, Inc. 43