Datasheet

6.6.1 ADC electrical specifications
The 16-bit accuracy specifications listed in Table 27 and Table 28 are achievable on the
differential pins ADCx_DP0, ADCx_DM0, ADCx_DP1, ADCx_DM1, ADCx_DP3, and
ADCx_DM3.
The ADCx_DP2 and ADCx_DM2 ADC inputs are connected to the PGA outputs and are
not direct device pins. Accuracy specifications for these pins are defined in Table 29 and
Table 30.
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 27. 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
ADC reference
voltage low
V
SSA
V
SSA
V
SSA
V
V
ADIN
Input voltage • 16-bit differential mode
• All other modes
VREFL
VREFL
—
—
31/32 *
VREFH
VREFH
V
C
ADIN
Input capacitance • 16-bit mode
• 8-bit / 10-bit / 12-bit
modes
—
—
8
4
10
5
pF
R
ADIN
Input resistance — 2 5 kΩ
R
AS
Analog source
resistance
13-bit / 12-bit modes
f
ADCK
< 4 MHz — — 5 kΩ
3
f
ADCK
ADC conversion
clock frequency
≤ 13-bit mode 1.0 — 18.0 MHz 4
f
ADCK
ADC conversion
clock frequency
16-bit mode 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
K10 Sub-Family Data Sheet Data Sheet, Rev. 7, 02/2013.
38 Freescale Semiconductor, Inc.