Datasheet

dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
DS70616G-page 562  2009-2012 Microchip Technology Inc.
TABLE 32-58: ADC CONVERSION (10-BIT MODE) TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V (see Note 4)
(unless otherwise stated)
Operating temperature -40°C  T
A  +85°C for Industrial
-40°C  TA  +125°C for Extended
Param. Symbol Characteristic Min. Typ.
(1)
Max. Units Conditions
Clock Parameters
AD50 T
AD ADC Clock Period 76 — — ns
AD51 t
RC ADC Internal RC Oscillator Period — 250 — ns
Conversion Rate
AD55 t
CONV Conversion Time — 12 TAD ——
AD56 F
CNV Throughput Rate — — 1.1 Msps Using sequential
sampling
AD57 TSAMP Sample Time 2 TAD ———
Timing Parameters
AD60 t
PCS Conversion Start from Sample
Trigger
(2)
2 TAD —3 TAD — Auto-Convert Trigger
not selected
AD61 tPSS Sample Start from Setting
Sample (SAMP) bit
(2)
2 TAD —3 TAD —
AD62 tCSS Conversion Completion to
Sample Start (ASAM = 1)
(2)
— 0.5 TAD ——
AD63 t
DPU Time to Stabilize Analog Stage
from ADC Off to ADC On
(2)
——20s See Note 3
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 may affect linearity
performance, especially at elevated temperatures.
3: The t
DPU parameter is the time required for the ADC module to stabilize at the appropriate level when the
module is turned on (ADON (ADxCON1<15>) = 1). During this time, the ADC result is indeterminate.
4: Device is functional at V
BORMIN < VDD < VDDMIN. Analog modules: ADC, Comparator and DAC will have
degraded performance. Device functionality is tested but not characterized. Refer to Parameter BO10 in
Table 32-11 for the minimum and maximum BOR values.