Datasheet

dsPIC33F
DS70165E-page 348 Preliminary © 2007 Microchip Technology Inc.
TABLE 26-41: ADC CONVERSION (10-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
(1)
Max. Units Conditions
Clock Parameters
AD50 T
AD ADC Clock Period 70 — — ns TCY = 70ns, ADxCON3
in default state
AD51 t
RC ADC Internal RC Oscillator Period — 250 — ns
Conversion Rate
AD55 t
CONV Conversion Time — 12 TAD ——
AD56 FCNV Throughput Rate — — 1.1 Msps
AD57 TSAMP Sample Time — 1 TAD ——
Timing Parameters
AD60 t
PCS Conversion Start from Sample
Trigger
(3)
—1.0 TAD — — Auto-Convert Trigger
(SSRC<2:0> = 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)
(3)
—0.5 TAD —— —
AD63 t
DPU Time to Stabilize Analog Stage
from ADC Off to ADC On
(3)
—20— μs—
Note 1: These parameters are characterized but not tested in manufacturing.
2: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.
3: Characterized by design but not tested.