64GA106 datasheet(287/330 Pages) MICROCHIP

287 / 330 page

 2010 Microchip Technology Inc.

DS39905E-page 287

PIC24FJ256GA110 FAMILY

TABLE 28-20: ADC CONVERSION TIMING REQUIREMENTS(1)

AC CHARACTERISTICS

Standard Operating Conditions: 2.0V to 3.6V

(unless otherwise stated)

Operating temperature

-40°C

 TA  +85°C for Industrial

-40°C

 TA  +125°C for Extended

Param

No.

Symbol

Characteristic

Min.

Typ

Max.

Units

Conditions

Clock Parameters

AD50

TAD

ADC Clock Period

—

TCY = 75 ns, AD1CON3

in default state

AD51

tRC

ADC Internal RC Oscillator

Period

—

250

—

Conversion Rate

AD55

tCONV

Conversion Time

—

TAD

AD56

FCNV

Throughput Rate

—

500

ksps

AVDD > 2.7V

AD57

tSAMP

Sample Time

—

TAD

Clock Parameters

AD61

tPSS

Sample Start Delay from Setting

Sample bit (SAMP)

2—

TAD

AD132 TACQ

Acquisition Time

—

750

(Note 2)

AD135 TSWC

Switching Time from Convert to

Sample

——

(Note 3)

AD137 TDIS

Discharge Time

0.5

—

TAD

A/D Stabilization Time (from

setting ADON to setting SAMP)

—

300

—

Note 1:

Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity

performance, especially at elevated temperatures.

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