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ELECTRICAL DATA S3C8245/P8245/C8249/P8249
19-10
Table 19-7. A/D Converter Electrical Characteristics
(T
A
= -25
°C to +85 °C, V
DD
= 2.7 V to 5.5 V, V
SS
= 0 V)
Parameter Symbol Conditions Min Typ Max Unit
Resolution – 10 – bit
Total accuracy V
DD
= 5.12 V
AV
REF
= 5.12 V
AV
SS
= 0 V
– – ±3 LSB
Integral Linearity
Error
ILE CPU clock = 10 MHz – ±2
Differential Linearity
Error
DLE – ±1
Offset Error of Top EOT ±1 ±3
Offset Error of
Bottom
EOB ±0.5 ±2
Conversion time
(1)
t
CON
– – 40 – fxx
Analog input voltage V
IAN
– AV
SS
– AV
REF
V
Analog input
impedance
R
AN
– 2 1000 – MΩ
Analog reference
voltage
AV
REF
– 2.5 – V
DD
V
Analog ground AV
SS
– V
SS
– V
SS
+ 0.3
Analog input current I
ADIN
AV
REF
= V
DD
= 5 V – – 10 uA
Analog block
current
(2)
I
ADC
AV
REF
= V
DD
= 5 V – 1 3 mA
AV
REF
= V
DD
= 3 V 0.5 1.5
AV
REF
= V
DD
= 5 V
When power down mode
100 500 nA
NOTES:
1. 'Conversion time' is the time required from the moment a conversion operation starts until it ends.
2. I
ADC
is an operating current during A/D conversion.