Product data

155
22.4.4 A/D Conversion Characteristics
Tables 22.32 and 22.33 list the A/D conversion characteristics.
Table 22.32 A/D Conversion Characteristics
(AN7 to AN0 Input: 134/266-State Conversion)
Condition A: V
CC
= 5.0 V ± 10%, AV
CC
= 5.0 V ± 10%
V
SS
= AV
SS
= 0 V, ø = 2 MHz to maximum operating frequency,
T
a
= –20 to +75°C (regular specifications),
T
a
= –40 to +85°C (wide-range specifications)
Condition B: V
CC
= 4.0 V to 5.5 V, AV
CC
= 4.0 V to 5.5 V
V
SS
= AV
SS
= 0 V, ø = 2 MHz to maximum operating frequency,
T
a
= –20 to +75°C (regular specifications),
T
a
= –40 to +85°C (wide-range specifications)
Condition C: V
CC
= 2.7 V to 5.5 V, AV
CC
= 2.7 V to 5.5 V
V
SS
= AV
SS
= 0 V, ø = 2 MHz to maximum operating frequency,
T
a
= –20 to +75°C
Condition A Condition B Condition C
20 MHz 16 MHz 10 MHz
Item Min Typ Max Min Typ Max Min Typ Max Unit
Resolution 10 10 10 10 10 10 10 10 10 Bits
Conversion time
*
5
6.7 8.4 13.4 µs
Analog input
capacitance
——20 ——20 ——20 pF
Permissible signal-
source
——10
*
3
——10
*
3
——10
*
1
k
impedance
5
*
4
5
*
4
5
*
2
Nonlinearity error ±3.0 ±3.0 ±7.0 LSB
Offset error ±3.5 ±3.5 ±7.5 LSB
Full-scale error ±3.5 ±3.5 ±7.5 LSB
Quantization error ±0.5 ±0.5 ±0.5 LSB
Absolute accuracy ±4.0 ±4.0 ±8.0 LSB
Notes: *1 When 4.0 V AV
CC
5.5 V
*2 When 2.7 V AV
CC
< 4.0 V
*3 When conversion time 11. 17 µs (CKS = 1 and ø 12 MHz, or CKS = 0)
*4 When conversion time < 11. 17 µs (CKS = 1 and ø > 12 MHz)
*5 At the maximum operating frequency in single mode