ATMEGA3208 datasheet(22/68 Pages) MICROCHIP

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The accuracy characteristics numbers are based on characterization of the following input reference

levels and VDD ranges:

•

Vref = 1.8 V, VDD = 1.8 to 5.5V

•

Vref = 2.6 V, VDD = 2.7 to 5.5V

•

Vref = 4.096 V, VDD = 4.5 to 5.5V

•

Vref = 4.3 V, VDD = 4.5 to 5.5V

Table 5-23. Accuracy Characteristics External Reference(2)

Symbol Description

Conditions

Min.

Typ.

Max.

Unit

Res

Resolution

bit

INL

Integral Non-

linearity

fADC=15 ksps

0.9

LSB

fADC=77 ksps

0.9

fADC=115 ksps

1.2

DNL(1)

Differential

Non-linearity

fADC=15 ksps

0.2

LSB

fADC=77 ksps

0.4

fADC=115 ksps

0.8

EABS

Absolute

accuracy

fADC=15 ksps

LSB

fADC=77 ksps

fADC=115 ksps

EGAIN

Gain error

fADC=15 ksps

LSB

fADC=77 ksps

fADC=115 ksps

EOFF

Offset error

-0.5

LSB

Note:

A DNL error of less than or equal to 1 LSB ensures a monotonic transfer function with no missing

codes.

These values are based on characterization and not covered by production test limits.

5.12

Table 5-24. Analog Comparator Characteristics

Symbol Description

Condition

Min. Typ. Max. Unit

VIN

Input Voltage

Low Power Mode

-0.2 -

VDD V

High speed mode

-0.2 -

VDD

CIN

Input Pin Capacitance

PD1 to PD6

3.5

PD7

ATmega3208/4808 – 32-pin Data Sheet

Electrical Characteristics

Datasheet Preliminary

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