PIC18F2680ISPQTP datasheet(451/482 Pages) MICROCHIP

451 / 482 page

Preliminary

DS39625C-page 449

PIC18F2585/2680/4585/4680

TABLE 27-24: A/D CONVERTER CHARACTERISTICS: PIC18F2585/2680/4585/4680 (INDUSTRIAL)

PIC18LF2585/2680/4585/4680 (INDUSTRIAL)

Param

No.

Sym

Characteristic

Min

Typ

Max

Units

Conditions

A01

Resolution

—

bit

ΔVREF ≥ 3.0V

A03

EIL

Integral Linearity Error

—

<±1

LSb

ΔVREF ≥ 3.0V

A04

EDL

Differential Linearity Error

—

<±1

LSb

ΔVREF ≥ 3.0V

A06

EOFF

Offset Error

—

<±1

LSb

ΔVREF ≥ 3.0V

A07

EGN

Gain Error

—

<±1

LSb

ΔVREF ≥ 3.0V

A10

—

Monotonicity

Guaranteed(1)

—

A20

ΔVREF Reference Voltage Range

(VREFH – VREFL)

3—

AVDD – AVSS

For 10-bit resolution

A21

VREFH

Reference Voltage High

AVSS + 3.0V

—

AVDD + 0.3V

For 10-bit resolution

A22

VREFL

Reference Voltage Low

AVSS – 0.3V

—

AVDD – 3.0V

For 10-bit resolution

A25

VAIN

Analog Input Voltage

VREFL

—VREFH

A28

AVDD

Analog Supply Voltage

VDD – 0.3

—

VDD + 0.3

A29

AVSS

Analog Supply Voltage

VSS – 0.3

—

VSS + 0.3

A30

ZAIN

Recommended Impedance of

Analog Voltage Source

——

2.5

A40

IAD

A/D Conversion

Current (VDD)

PIC18FXXXX

—

180

—

μA Average current

consumption when

A/D is on (Note 2)

PIC18LFXXXX

—

μAVDD = 2.0V;

average current

consumption when

A/D is on (Note 2)

A50

IREF

VREF Input Current (Note 3)

—

±5

±150

μA

During VAIN acquisition.

During A/D conversion

cycle.

Note 1:

The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.

When A/D is off, it will not consume any current other than minor leakage current. The power-down current

spec includes any such leakage from the A/D module.

VREFH current is from RA3/AN3/VREF+ pin or AVDD, whichever is selected as the VREFH source.

VREFL current is from RA2/AN2/VREF- pin or AVSS, whichever is selected as the VREFL source.

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