8 ELECTRICAL CHARACTERISTICS

8.5 A/D Converter Characteristics

1) 3.3 V/5.0 V dual power source

(Unless otherwise specified: VDDE=AVDDE=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

µs

1

Zero scale error

EZS

 

0

2

4

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=AVDDE=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

µs

1

Zero scale error

EZS

 

0

2

4

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 = AVDDE.

• The A/D converter cannot be used when the S1C33L03 is used with a 2V power source.

A/D conversion error

V[000]h = Ideal voltage at zero-scale point (=0.5LSB)

1LSB =

AVDDE - VSS

V'[000]h = Actual voltage at zero-scale point

210 - 1

 

 

 

V[3FF]h = Ideal voltage at full-scale point (=1022.5LSB)

1LSB' =V'[3FF]h - V'[000]h

V'[3FF]h = Actual voltage at full-scale point

 

210 - 2

A-76

EPSON

S1C33L03 PRODUCT PART