22.4.4
A/D Conversion Characteristics
Table 22.38 lists the A/D conversion characteristics.
Table 22.38 A/D Conversion Characteristics
Condition:
T
= –20°C to +75°C (regular specifications),
a
T
= –40°C to 85°C (wide-range specifications)
a
Condition A: V
= 5.0 V ± 10%, AV
CC
fmax = 20 MHz
Condition B: V
= 5.0 V ± 10%, AV
CC
fmax = 25 MHz
Item
Conversion time:
Resolution
134 states
Conversion time (single mode)
Analog input capacitance
Permissible signal-
source impedance
Nonlinearity error
Offset error
Full-scale error
Quantization error
Absolute accuracy
Conversion time:
Resolution
70 states *
Conversion time (single mode)
Analog input capacitance
Permissible signal-
source impedance
Nonlinearity error
Offset error
Full-scale error
Quantization error
Absolute accuracy
Note: * When using an operating frequency f (MHz) exceeding 70/5.36 = 13 (MHz), do not select 70
states for the conversion time.
722
= 5.0 V ± 10%, V
CC
REF
= 5.0 V ± 10%, V
CC
REF
φ ≤ 13 MHz
φ > 13 MHz
φ ≤ 13 MHz
φ > 13 MHz
= 4.5 to AV
, V
= AV
CC
SS
= 4.5 to AV
, V
= AV
CC
SS
Condition
A and B
Min
Typ
Max
10
10
10
5.36
—
—
—
—
20
—
—
10
—
—
5
—
—
±3.5
—
—
±3.5
—
—
±3.5
—
—
±0.5
—
—
±4.0
10
10
10
5.36
—
—
—
—
20
—
—
5
—
—
3
—
—
±7.5
—
—
±7.5
—
—
±7.5
—
—
±0.5
—
—
±8.0
= 0 V,
SS
= 0 V,
SS
Unit
bits
µs
pF
kΩ
kΩ
LSB
LSB
LSB
LSB
LSB
bits
µs
pF
kΩ
kΩ
LSB
LSB
LSB
LSB
LSB