Analog-to-Digital Converter (ADC) Parameters
10.16 Analog-to-Digital Converter (ADC) Parameters
Table 10-24 ADC Parameters
Characteristic
Input voltages
Symbol
VADIN
RES
Min
VREFL
12
Typ
—
Max
VREFH
12
Unit
V
Resolution
—
Bits
Integral Non-Linearity1
LSB2
LSB2
INL
—
+/- 2.4
+/- 0.7
+/- 3.2
< +1
Differential Non-Linearity
DNL
—
Monotonicity
GUARANTEED
—
ADC internal clock
fADIC
RAD
0.5
VREFL
5
5
MHz
V
Conversion range
—
6
VREFH
16
tAIC cycles3
ms
ADC channel power-up time
tADPU
ADC reference circuit power-up time4
Conversion time
tVREF
tADC
—
—
—
6
25
—
tAIC cycles3
tAIC cycles3
Sample time
tADS
—
1
—
Input capacitance
CADI
IADI
—
—
—
—
—
—
—
—
—
—
—
5
—
pF
Input injection current5, per pin
Input injection current, total
—
3
20
mA
mA
mA
mA
IADIT
—
VREFH current
IVREFH
IADCA
IADCB
IADCQ
EGAIN
VOFFSET
AECAL
CF1
1.2
3
ADC A current
25
—
ADC B current
25
—
mA
μA
Quiescent current
0
.+/- .004
+/- 27
10
Uncalibrated Gain Error (ideal = 1)
Uncalibrated Offset Voltage
+/- .01
+/- 40
—
—
mV
LSBs
—
Calibrated Absolute Error6
See Figure 10-23
—
Calibration Factor 17
0.002289
Calibration Factor 2
CF2
—
—
—
—
—
-60
–25.6
—
—
dB
V
Crosstalk between channels
Common Mode Voltage
Vcommon
(VREFH - VREFLO) / 2
—
Signal-to-noise ratio
SNR
—
64.6
—
db
56F8367 Technical Data, Rev. 9
Freescale Semiconductor
Preliminary
161
FREESCALE [ Freescale ]
