Datasheet

dsPIC33F
DS70165E-page 350 Preliminary © 2007 Microchip Technology Inc.
TABLE 26-42: 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
Param
No.
Symbol Characteristic Min. Typ Max. Units Conditions
Clock Parameters
AD50 T
AD ADC Clock Period 133 — — ns TCY = 133ns,
ADxCON3 in default
state
AD51 tRC ADC Internal RC Oscillator
Period
— 250 — ns
Conversion Rate
AD55 t
CONV Conversion Time — 14 TAD ns
AD56 F
CNV Throughput Rate — — 500 ksps
AD57 T
SAMP Sample Time — 1 TAD —ns
Timing Parameters
AD60 t
PCS Conversion Start from Sample
Trigger
—1.0 TAD —ns —
AD61 t
PSS Sample Start from Setting
Sample (SAMP) bit
0.5 TAD — 1.5 TAD ns —
AD62 t
CSS Conversion Completion to
Sample Start (ASAM = 1)
———ns —
AD63 t
DPU Time to Stabilize Analog Stage
from ADC Off to ADC On
—20—μs—
Legend: TBD = To Be Determined
Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.