Datasheet

PIC32MX1XX/2XX
DS61168E-page 276 Preliminary  2011-2012 Microchip Technology Inc.
TABLE 29-34: 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  TA  +105°C for V-temp
Param.
No.
Symbol Characteristics Min. Typical
(1)
Max. Units Conditions
Clock Parameters
AD50 TAD ADC Clock Period
(2)
65 — — ns See Table 29-33
Conversion Rate
AD55
TCONV Conversion Time — 12 TAD —— —
AD56 F
CNV Throughput Rate
(Sampling Speed)
— — 1000 ksps AVDD = 3.0V to 3.6V
— — 400 ksps AV
DD = 2.5V to 3.6V
AD57 T
SAMP Sample Time 1 TAD ———TSAMP must be  132 ns
Timing Parameters
AD60
TPCS 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 TCSS Conversion Completion to
Sample Start (ASAM = 1)
(3)
—0.5 TAD —— —
AD63
TDPU Time to Stabilize Analog Stage
from ADC Off to ADC 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 < VDD < 2.5V, but with degraded performance. Unless otherwise
stated, module functionality is tested, but not characterized.