Datasheet

dsPIC30F5011/5013
DS70116J-page 202 © 2011 Microchip Technology Inc.
TABLE 23-39: 12-BIT A/D CONVERSION TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.7V to 5.5V
(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 T
AD A/D Clock Period — 334 — ns VDD = 3-5.5V (Note 1)
AD51 T
RC A/D Internal RC Oscillator Period 1.2 1.5 1.8 μs
Conversion Rate
AD55 T
CONV Conversion Time — 14 TAD —ns
AD56 F
CNV Throughput Rate — — 200 ksps VDD = VREF = 5V
AD57 TSAMP Sampling Time — 1 TAD —nsVDD = 3-5.5V source
resistance
RS = 0-2.5 kΩ
Timing Parameters
AD60 T
PCS Conversion Start from Sample
Trigger
—1 TAD —ns
AD61 TPSS Sample Start from Setting
Sample (SAMP) Bit
0.5 TAD —1.5
TAD
ns
AD62 T
CSS Conversion Completion to
Sample Start (ASAM = 1)
— 0.5 TAD —ns
AD63 TDPU
(2)
Time to Stabilize Analog Stage
from A/D Off to A/D On
——20μs
Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.
2: T
DPU is the time required for the ADC module to stabilize when it is turned on (ADCON1<ADON> = 1).
During this time the ADC result is indeterminate.