System modules
Table 27. 16-bit ADC characteristics (VREFH = VDDA, VREFL = VSSA) (continued)
Symbol Description
Conditions1
Min.
—
Typ.2
Max.
-5.4
-1.8
Unit
Notes
EFS
Full-scale error
• 12 bit modes
• <12 bit modes
-4
LSB4
VADIN
=
VDDA
—
-1.4
5
6
EQ
Quantization
error
• 16 bit modes
• 12 bit modes
—
—
-1 to 0
—
—
LSB4
0.5
ENOB
Effective number 16 bit single-ended mode
of bits
• Avg=32
12.2
11.4
13.9
13.1
—
—
bits
bits
• Avg=4
12 bit single-ended mode
• Avg=32
10.8
10.2
—
—
bits
bits
• Avg=1
Signal-to-noise
plus distortion
See ENOB
SINAD
THD
6.02 × ENOB + 1.76
dB
Total harmonic
distortion
16 bit single-ended mode
• Avg=32
7
7
—
-85
—
dB
12 bit single-ended mode
• Avg=32
—
-74
90
—
—
dB
dB
SFDR
Spurious free
dynamic range
16 bit single-ended mode
• Avg=32
78
12 bit single-ended mode
• Avg=32
78
—
dB
EIL
Input leakage
error
IIn × RAS
mV
IIn =
leakage
current
(refer to
the
device's
voltage
and current
operating
ratings)
Temp sensor
slope
–40°C to 105°C
25°C
—
—
1.715
722
—
—
mV/°C
mV
VTEMP25 Temp sensor
voltage
8
1. All accuracy numbers assume the ADC is calibrated with VREFH = VDDA
2. Typical values assume VDDA = 3.0 V, Temp = 25°C, fADCK = 2.0 MHz unless otherwise stated. Typical values are for
reference only and are not tested in production.
MC56F844xx Advance Information Data Sheet, Rev. 2, 06/2012.
46
Freescale Semiconductor, Inc.
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