Datasheet

dsPIC30F5015/5016
DS70149E-page 216 © 2011 Microchip Technology Inc.
TABLE 24-41: 10-BIT HIGH-SPEED 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
(1)
Max. Units Conditions
Clock Parameters
AD50 T
AD A/D Clock Period — 83.33
(2)
—nsSee Table 20-1
(3)
AD51 tRC A/D Internal RC Oscillator Period 700 900 1100 ns —
Conversion Rate
AD55 t
CONV Conversion Time — 12 TAD —— —
AD56 FCNV Throughput Rate — 1.0 — Msps See Table 20-1
(3)
AD57 TSAMP Sample Time — 1 TAD ——See Table 20-1
(3)
Timing Parameters
AD60 tPCS Conversion Start from Sample
Trigger
(3)
—1.0 TAD — — Auto-Convert Trigger
(SSRC = 111) not
selected
AD61 tPSS Sample Start from Setting
Sample (SAMP) Bit
0.5 TAD — 1.5 TAD ——
AD62 t
CSS Conversion Completion to
Sample Start (ASAM = 1)
(4)
—0.5 TAD —ns —
AD63 tDPU
(4)
Time to Stabilize Analog Stage
from A/D Off to A/D On
(4)
——20μs—
Note 1: These parameters are characterized but not tested in manufacturing.
2: Operating Temperature: -40°C to +85°C
3: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.
4: t
DPU is the time required for the ADC module to stabilize when it is turned on (ADCON1<ADON> = 1). Dur-
ing this time the ADC result is indeterminate.