Datasheet

 2009-2016 Microchip Technology Inc. DS60001156J-page 391
PIC32MX5XX/6XX/7XX
TABLE 32-38: ANALOG-TO-DIGITAL CONVERSION TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions (see Note 4): 2.5V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  T A  +85°C for Industrial
-40°C  T
A  +105°C for V-Temp
Param.
No.
Symbol Characteristics Min. Typical
(1)
Max. Units Conditions
Clock Parameters
AD50 T AD Analog-to-Digital Clock Period
(2)
65 — — ns See Table 32-37
Conversion Rate
AD55 TCONV Conversion Time — 12 T AD —— —
AD56 F CNV Throughput Rate
(Sampling Speed)
— — 1000 ksps AV DD = 3.0V to 3.6V
——400kspsAV
DD = 2.5V to 3.6V
AD57 T SAMP Sample Time 1 T AD ———T SAMP must be  132 ns
Timing Parameters
AD60 TPCS Conversion Start from Sample
Trigger
(3)
— 1.0 T AD — — Auto-Convert Trigger
(SSRC<2:0> = 111)
not selected
AD61
TPSS Sample Start from Setting
Sample (SAMP) bit
0.5 T AD —1.5 T AD ——
AD62
TCSS Conversion Completion to
Sample Start (ASAM = 1)
(3)
— 0.5 T AD —— —
AD63
TDPU Time to Stabilize Analog Stage
from Analog-to-Digital Off to
Analog-to-Digital On
(3)
—— 2s—
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.
4: The ADC module is functional at V BORMIN < V DD < 2.5V, but with degraded performance. Unless otherwise
stated, module functionality is tested, but not characterized.