A/D Converter Characteristics - Epson S1C33210 Technical Manual

8 ELECTRICAL CHARACTERISTICS

8.5 A/D Converter Characteristics

(Unless otherwise specified: AV
Item
Resolution
Conversion time
Zero scale error
Full scale error
Integral linearity error
Differential linearity error
Permissible signal source impedance
Analog input capacitance
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 = 32 kHz (minimum clock frequency in 3V system).
Note: • Be sure to use as V
• The A/D converter cannot be used when the S1C33210 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
Zero scale error
004
003
V[000]h
(=0.5LSB)
002
001
V'[000]h
000
V
SS
Analog input
Full scale error
V'[3FF]h
3FF
3FE
3FD
Actual conversion characteristic
3FC
Ideal conversion characteristic
3FB
Analog input
A-72
=V
DD
Symbol
–
–
E
ZS
E
FS
E
L
E
D
–
–
= AV .
DD DD
1LSB =
1LSB' =
Ideal conversion characteristic
Actual conversion characteristic
Zero scale error E
V[3FF]h (=1022.5LSB)
Full scale error E
AV
DD
EPSON
=2.7V to 3.6V, V =0V, Ta=-40 C to +85 C, ST[1:0]=11)
DD SS
Condition Min.
AV - V
DD SS
2 10 - 1
V'[3FF]h - V'[000]h
2 10 - 2
(V'[000]h - 0.5LSB') - (V[000]h - 0.5LSB)
=
ZS
(V'[3FF]h + 0.5LSB') - (V[3FF]h + 0.5LSB)
=
FS
Typ. Max. Unit
– 10 – bit
10 – 625
0 2 4 LSB
-2 – 2 LSB
-3 – 3 LSB
-3 – 3 LSB
– – 5 k
– – 45 pF
1LSB
1LSB
S1C33210 PRODUCT PART
s 1
[LSB]
[LSB]