Datasheet

 2009-2012 Microchip Technology Inc. DS70594D-page 325
dsPIC33FJXXXMCX06A/X08A/X10A
TABLE 26-46: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS
AC CHARACTERISTICS
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
Param
No.
Symbol Characteristic Min. Typ Max. Units Conditions
Clock Parameters
AD50a T
AD ADC Clock Period 117.6 — — ns —
AD51a tRC ADC Internal RC Oscillator
Period
—250— ns —
Conversion Rate
AD55a t
CONV Conversion Time — 14 TAD ——
AD56a FCNV Throughput Rate — — 500 ksps —
AD57a T
SAMP Sample Time 3.0 TAD —— — —
Timing Parameters
AD60a t
PCS Conversion Start from Sample
Trigger
(1,2)
2.0 TAD — 3.0 TAD ——
AD61a t
PSS Sample Start from Setting
Sample (SAMP) bit
(1,2)
2.0 TAD — 3.0 TAD ——
AD62a t
CSS Conversion Completion to
Sample Start (ASAM = 1)
(1,2)
—0.5 TAD —— —
AD63a t
DPU Time to Stabilize Analog Stage
from ADC Off to ADC On
(1,2,3)
——20s—
Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.
2: These parameters are characterized but not tested in manufacturing.
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.