Microchip Technology MA330017 Data Sheet

© 2007-2012 Microchip Technology Inc.

DS70283K-page 277

AD55

T

SAMP

Clear SAMP

Set SAMP

AD61

ADCLK

Instruction

SAMP

AD60

DONE

AD1IF

1

2

3

4

5

6

8

7

1 – Software sets AD1CON. SAMP to start sampling.

2 – Sampling starts after discharge period. T

SAMP

 is described in 

3 – Software clears AD1CON. SAMP to start conversion.

4 – Sampling ends, conversion sequence starts.

5 – Convert bit 11.

9 – One T

AD

 for end of conversion.

AD50

9

6 – Convert bit 10.

7 – Convert bit 1.

8 – Convert bit 0.

 

Execution

in the “dsPIC33F/PIC24H Family Reference Manual”. 

Section 16. “Analog-to-Digital Converter (ADC)” (DS70183)

Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature

-40°C 

≤ T

A

 

≤ +85°C for Industrial

-40°C 

≤ T

A

 

≤ +125°C for Extended

AD50

T

AD

ADC Clock Period

117.6

—

—

ns

—

AD51

t

RC

ADC Internal RC Oscillator 
Period

—

250

—

ns

—

AD55

t

CONV

Conversion Time

—

14 T

AD

—

ns

—

AD56

F

CNV

Throughput Rate

—

—

500

Ksps

—

AD57

T

SAMP

Sample Time

3.0 T

AD

—

—

—

—

AD60

t

PCS

Conversion Start from Sample 
Trigger

2.0 T

AD

—

3.0 T

AD

—

Auto convert trigger not 
selected

AD61

t

PSS

Sample Start from Setting
Sample (SAMP) bit

2.0 T

AD

—

3.0 T

AD

—

—

AD62

t

CSS

Conversion Completion to
Sample Start (ASAM = 1)

—

0.5 T

AD

—

—

—

AD63

t

DPU

Time to Stabilize Analog Stage
from ADC Off to ADC On

—

—

20

μs

—

Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz may affect linearity 

performance, especially at elevated temperatures.

2: These parameters are characterized but not tested in manufacturing.