Microchip Technology MA330018 Data Sheet
dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
DS70291G-page 404
© 2007-2012 Microchip Technology Inc.
TABLE 31-46: ADC CONVERSION (12-BIT MODE) TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 3.0V to 3.6V
(unless otherwise stated)
Operating temperature
(unless otherwise stated)
Operating temperature
-40°C
≤ T
A
≤ +85°C for Industrial
-40°C
≤ T
A
≤ +125°C for Extended
Param
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
Clock Parameters
AD50
T
AD
ADC Clock Period
117.6
—
—
ns
—
AD51
t
RC
ADC Internal RC Oscillator
Period
Period
—
250
—
ns
—
Conversion Rate
AD55
t
CONV
Conversion Time
—
14 T
AD
ns
—
AD56
F
CNV
Throughput Rate
—
—
500
Ksps
—
AD57
T
SAMP
Sample Time
3 T
AD
—
—
—
—
Timing Parameters
AD60
t
PCS
Conversion Start from Sample
Trigger
Trigger
(2)
2 T
AD
—
3 T
AD
—
Auto convert trigger not
selected
selected
AD61
t
PSS
Sample Start from Setting
Sample (SAMP) bit
(2)
2 T
AD
—
3 T
AD
—
—
AD62
t
CSS
Conversion Completion to
Sample Start (ASAM = 1)
(2)
—
0.5 T
AD
—
—
—
AD63
t
DPU
Time to Stabilize Analog Stage
from ADC Off to ADC On
(2)
—
—
20
μs
—
Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz may affect linearity
performance, especially at elevated temperatures.
2: These parameters are characterized but not tested in manufacturing.
3: The t
3: The t
DPU
is the time required for the ADC module to stabilize at the appropriate level when the module is
turned on (AD1CON1<ADON>=‘1’). During this time, the ADC result is indeterminate.