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