15 analog-to-digital converter (adc) parameters, Table 10-24, Table 10-24 adc parameters – Freescale Semiconductor 56F8122 User Manual
Page 122

56F8322 Techncial Data, Rev. 10.0
122
Freescale Semiconductor
Preliminary
10.15 Analog-to-Digital Converter (ADC) Parameters
Table 10-24 ADC Parameters
Characteristic
Symbol
Min
Typ
Max
Unit
Input voltages
V
ADIN
V
REFL
—
V
REFH
V
Resolution
R
ES
12
—
12
Bits
Integral Non-Linearity
1
INL
—
+/- 2.4
+/- 3.2
LSB
2
Differential Non-Linearity
DNL
—
+/- 0.7
< +1
LSB
2
Monotonicity
GUARANTEED
ADC internal clock
f
ADIC
0.5
—
5
MHz
Conversion range
R
AD
V
REFL
—
V
REFH
V
ADC channel power-up time
t
ADPU
5
6
16
t
AIC
cycles
3
ADC reference circuit power-up time
4
t
VREF
—
—
25
ms
Conversion time
t
ADC
—
6
—
t
AIC
cycles
3
Sample time
t
ADS
—
1
—
t
AIC
cycles
3
Input capacitance
C
ADI
—
5
—
pF
Input injection current
5
, per pin
I
ADI
—
—
3
mA
Input injection current, total
I
ADIT
—
—
20
mA
V
REFH
current
I
VREFH
—
1.2
3
mA
ADC A current
I
ADCA
—
25
—
mA
ADC B current
I
ADCB
—
25
—
mA
Quiescent current
I
ADCQ
—
0
10
µ
A
Uncalibrated Gain Error (ideal)
E
GAIN
—
+/- .004
+/- .01
—
Uncalibrated Offset Voltage
V
OFFSET
—
+/- 26
+/- 32
mV
Calibrated Absolute Error
6
AE
CAL
—
See
—
LSBs
Calibration Factor 1
7
CF1
—
0.008597
—
—
Calibration Factor 2
7
CF2
—
-2.8
—
—
Crosstalk between channels
—
—
-60
—
dB
Common Mode Voltage
V
common
—
(V
REFH
- V
REFLO
) / 2
—
V
Signal-to-noise ratio
SNR
—
64.6
—
db