
S1C88409 TECHNICAL MANUAL
EPSON
217
CHAPTER 8: ELECTRICAL CHARACTERISTICS
8.7 A/D Converter Characteristics
Item
Zero-scale error
Full-scale error
Non-linearity error
Total error
A/D converter
current consumption
Input clock frequency
Symbol
Ezs
Efs
El
Et
IAD
f
Unit
LSB
mA
MHz
Note
Max.
1.50
3.00
1.00
3.50
4
Typ.
–
0.50
1.80
2
Min.
-1.50
-3.00
–
* Zero-scale error:
Ezs = deviation from the ideal value at zero point
* Full-scale error:
Efs = deviation from the ideal value at the full scale point
* Non-linearity error: El = deviation of the real conversion curve from the end point line
* Total error:
Et = max(Ezs, Efs, Eabs), Eabs = deviation from the ideal line (including quantization error)
Condition
VDD=AVDD=AVREF=2.7 to 5.5V, AVSS=0V,
ADCLK=2MHz, Ta=25
°C
VDD=AVDD=AVREF=3.0V, ADCLK=2MHz, Ta=25
°C
AVREF and ADCLK divider current not included
VDD=AVDD=AVREF=5.0V, ADCLK=2MHz, Ta=25
°C
AVREF and ADCLK divider current not included
VDD=AVDD=AVREF=2.7 to 5.5 V, Ta=25
°C
Unless otherwise specified:
VDD=AVDD=AVREF=5.0 V, VSS=AVSS=AGND=0 V, fOSC1=32.768 kHz, fOSC3=4.0 MHz, Ta=25
°C
The following characteristics apply to the plastic package model only.
8.8 D/A Converter Characteristics
Item
D/A conversion speed
Integral linearity error
Differential linearity error
Total error
D/A converter
current consumption
Symbol
tDA
ElDA
EdDA
EtDA
IDA
Unit
s
LSB
mA
Note
Max.
10
30
1.50
1.00
2.50
1
2
Typ.
–
0.35
0.7
Min.
–
-1.50
-1.00
-2.50
–
Condition
VDD=AVDD=AVREF=VD1=5.5 V
Load capacitance=parasitic capacitance only
VDD=AVDD=AVREF=VD1=5.5 V
Load capacitance=100 pF+parasitic capacitance
VDD=AVDD=VD1=AVREF=3.0 V,
IL=1
A, Ta=-20 to 70°C
VDD=AVDD=VD1=AVREF=5.0 V,
IL=1
A, Ta=-20 to 70°C
VDD=AVDD=VD1=AVREF=3.0 V,
IL=1
A, Ta=-20 to 70°C
VDD=AVDD=VD1=AVREF=5.0 V,
IL=1
A, Ta=-20 to 70°C
VDD=AVDD=VD1=AVREF=3.0V,
IL=1
A, Ta=-20 to 70°C
VDD=AVDD=VD1=AVREF=5.0V,
IL=1
A, Ta=-20 to 70°C
VDD=AVDD=AVREF=3.0V, Ta=25
°C, 55H output
Reference resistor current not included
VDD=AVDD=AVREF=5.5V, Ta=25
°C, 55H output
Reference resistor current not included
* Integral linearity error:
ElDA = difference between the real conversion characteristic and the end point line
* Differential linearity error: EdDA = difference between the real step width and the ideal step width
* Total error:
EtDA = max(Ezs, Efs, Eabs)
Eabs = deviation from the ideal line (including quantization error)
Ezs = deviation from the ideal value at zero point (zero-scale error)
Efs = deviation from the ideal value at the full scale point (full-scale error)
Unless otherwise specified:
VDD=AVDD=AVREF=5.0 V, VSS=AVSS=AGND=0 V, fOSC1=32.768 kHz, fOSC3=1.0 MHz, Ta=25
°C
The following characteristics apply to the plastic package model only.