DSPIC33FJ64GP706 datasheet(295/322 Pages) MICROCHIP

295 / 322 page

DS70286C-page 293

dsPIC33FJXXXGPX06/X08/X10

TABLE 25-40: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V

(unless otherwise stated)

Operating temperature

-40°C

≤ TA ≤ +85°C for Industrial

Param

No.

Symbol

Characteristic

Min.

Typ(1)

Max.

Units

Conditions

Clock Parameters

AD50a TAD

ADC Clock Period

117.6

—

AD51a tRC

ADC Internal RC Oscillator

Period

—

250

—

Conversion Rate

AD55a tCONV

Conversion Time

—

14 TAD

—

AD56a FCNV

Throughput Rate

—

500

ksps

—

AD57a TSAMP

Sample Time

3 TAD

——

—

Timing Parameters

AD60a tPCS

Conversion Start from Sample

Trigger(2)

2.0 TAD

—

3.0 TAD

—

Auto-Convert Trigger

(SSRC<2:0> = 111) not

selected

AD61a tPSS

Sample Start from Setting

Sample (SAMP) bit(2)

2.0 TAD

—

3.0 TAD

——

AD62a tCSS

Conversion Completion to

Sample Start (ASAM = 1)(2)

—

0.5 TAD

——

—

AD63a tDPU

Time to Stabilize Analog Stage

from ADC Off to ADC On(2,3)

——

μs—

Note 1: These parameters are characterized but not tested in manufacturing.

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

performance, especially at elevated temperatures.

3: tDPU is the time required for the ADC module to stabilize when it is turned on (AD1CON1<ADON> = 1).

During this time, the ADC result is indeterminate.

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