
8
ELECTRICAL CHARACTERISTICS
S1C33L01 PRODUCT PART
EPSON
A-73
8.5 A/D Converter Characteristics
1) 3.3 V/5.0 V dual power source
(Unless otherwise specified: VDDE=AVDD=4.5V to 5.5V, VDD=2.7V to 3.6V, VSS=0V, Ta=-40
°C to +85°C, ST[1:0]=11)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Resolution
–
10
–
bit
Conversion time
–
5
–
625
s1
Zero scale error
EZS
024
LSB
Full scale error
EFS
-2
–
2
LSB
Integral linearity error
EL
-3
–
3
LSB
Differential linearity error
ED
-3
–
3
LSB
Permissible signal source impedance
–
5
k
Analog input capacitance
–
45
pF
note 1) Indicates the minimum value when A/D clock = 4MHz (maximum clock frequency in 5V system).
Indicates the maximum value when A/D clock = 32kHz (minimum clock frequency in 5V system).
2) 3.3 V single power source
(Unless otherwise specified: VDDE=AVDD=VDD=2.7V to 3.6V, VSS=0V, Ta=-40
°C to +85°C, ST[1:0]=11)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Resolution
–
10
–
bit
Conversion time
–
10
–
625
s1
Zero scale error
EZS
024
LSB
Full scale error
EFS
-2
–
2
LSB
Integral linearity error
EL
-3
–
3
LSB
Differential linearity error
ED
-3
–
3
LSB
Permissible signal source impedance
–
5
k
Analog input capacitance
–
45
pF
note 1) Indicates the minimum value when A/D clock = 2MHz (maximum clock frequency in 3V system).
Indicates the maximum value when A/D clock = 32kHz (minimum clock frequency in 3V system).
Note: Be sure to use as VDDE = AVDD.
The A/D converter cannot be used when the S1C33L01 is used with a 2V power source.
A/D conversion error
V[000]h = Ideal voltage at zero-scale point (=0.5LSB)
V'[000]h = Actual voltage at zero-scale point
V[3FF]h = Ideal voltage at full-scale point (=1022.5LSB)
V'[3FF]h = Actual voltage at full-scale point
V[000]h
(=0.5LSB)
V'[000]h
004
003
002
001
000
VSS
1LSB =
1LSB' =
AVDD - VSS
210 - 1
V'[3FF]h - V'[000]h
210 - 2
Zero scale error EZS =
[LSB]
(V'[000]h - 0.5LSB') - (V[000]h - 0.5LSB)
1LSB
Digital
output
(hex)
Analog input
Ideal conversion characteristic
Actual conversion characteristic
V[3FF]h (=1022.5LSB)
V'[3FF]h
3FF
3FE
3FD
3FC
3FB
AVDD
Zero scale error
Full scale error
Full scale error EFS =
[LSB]
(V'[3FF]h + 0.5LSB') - (V[3FF]h + 0.5LSB)
1LSB
Digital
output
(hex)
Analog input
Ideal conversion characteristic
Actual conversion characteristic