Datasheet

779
25.4 A/D Converter Characteristics
Table 25.15 A/D Converter Timing (excluding A mask) (Conditions: V
CC
= 5.0 V ± 10%,
AV
CC
= 5.0 V ± 10%, AV
CC
= V
CC
± 10%, AV
ref
= 4.5 V to AV
CC
, V
SS
= AV
SS
= 0
V, Ta = – 20 to +75°C)
28.7 MHz
Item Min Typ Max Unit
Resolution 10 10 10 Bits
Conversion time (when CKS = 1) — — 2.9 µs
Analog input capacitance — — 20 pF
Permitted signal source
impedance
——1 kΩ
Non-linear error
*
— — ±8 LSB
Offset error
*
— — ±8 LSB
Full-scale error
*
— — ±8 LSB
Quantization error
*
— — ±0.5 LSB
Absolute error (when CKS = 1) — — ±15 LSB
Note: * Reference values
Table 25.16 A/D Converter Timing (A mask) (Condition: Vcc=5.0 ± 10%, AVcc=5.0 ± 10%,
AVcc=Vcc ± 10%, AVref=4.5V to AVcc, Vss=AVss=0V, Ta=-20 to +75°C)
28.7 MHz 20 MHz
Item Min Typ Max Min Typ Max Unit
Resolution 10 10 10 10 10 10 Bits
Conversion time (when CKS=0) — — 9.3 — — 13.4 µs
Analog input capacity — — 20 — — 20 pF
Permission signal source
impedance
—— 1 — — 1 kΩ
Non-linearity error
*
— — ±3 — — ±3 LSB
Offset error
*
— — ±3 — — ±3 LSB
Full scale error
*
— — ±3 — — ±3 LSB
Quantize error
*
— — ±0.5 — — ±0.5 LSB
Absolute error — — ±4 — — ±4 LSB
Note: * Reference value