PIC18F46K22T-E/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F46K22T-E/SP

28/40/44-Pin, Low-Power,High-Performance Microcontrollers with XLP Technology

Microchip Technology 

PIC18(L)F2X/4XK22

TABLE 27-23: A/D CONVERTER CHARACTERISTICS:PIC18(L)F2X/4XK22

Param

No.

Symbol

Characteristic

Min

Typ

Max

Units

Conditions

A01 NR

Resolution

—

—

10

bits -40°C to +85°C,

VREF  2.0V

A03 EIL

Integral Linearity Error

—

±0.5

—

LSb -40°C to +85°C,

VREF  2.0V

A04 EDL

Differential Linearity Error

—

±0.4

—

LSb -40°C to +85°C,

VREF  2.0V

A06 EOFF Offset Error

—

0.4

—

LSb -40°C to +85°C,

VREF  2.0V

A07 EGN

Gain Error

—

0.3

—

LSb -40°C to +85°C,

VREF  2.0V

A08 ETOTL Total Error

—

1

—

LSb -40°C to +85°C,

VREF  2.0V

A20 VREF Reference Voltage Range

(VREFH – VREFL)

1.8

—

2.0

—

—

V ABsolute Minimum

—

V Minimum for 1LSb

Accuracy

A21 VREFH Reference Voltage High

VDD/2

—

VDD + 0.3

V

A22 VREFL Reference Voltage Low

VSS – 0.3V —

VDD/2

V

A25 VAIN Analog Input Voltage

VREFL

—

VREFH

V

A30 ZAIN Recommended Impedance of

—

—

Analog Voltage Source

3

k -40°C to +85°C

Note 1: The A/D conversion result never decreases with an increase in the input voltage and has no missing

codes.

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

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

FIGURE 27-20: A/D CONVERSION TIMING

BSF ADCON0, GO

(Note 2)

131

Q4

130

A/D CLK 132

A/D DATA

9

8 7 .. . . . . 2

1

0

ADRES

ADIF

GO

SAMPLE

OLD_DATA

SAMPLING STOPPED

NEW_DATA

TCY

DONE

Note 1: If the A/D clock source is selected as RC, a time of TCY is added before the A/D clock starts.

This allows the SLEEP instruction to be executed.

2: This is a minimal RC delay (typically 100 ns), which also disconnects the holding capacitor from the analog input.

 2010 Microchip Technology Inc.

Preliminary

DS41412A-page 461

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