Getac Technology Corporation V110GD 사용자 설명서
© 2011 Microchip Technology Inc.
Preliminary
DS61168C-page 277
PIC32MX1XX/2XX
TABLE 29-34: ANALOG-TO-DIGITAL CONVERSION TIMING REQUIREMENTS
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V 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
≤ +105°C for V-temp
Param.
No.
Symbol
Characteristics
Min.
Typical
(1)
Max.
Units
Conditions
Clock Parameters
AD50
AD50
T
AD
ADC Clock Period
(2)
65
—
—
ns
See
Conversion Rate
AD55
AD55
TCONV
Conversion Time
—
12 T
AD
—
—
—
AD56
F
CNV
Throughput Rate
(Sampling Speed)
(Sampling Speed)
—
—
1000
ksps
AV
DD
= 3.0V to 3.6V
—
—
400
ksps
AV
DD
= 2.5V to 3.6V
AD57
T
SAMP
Sample Time
1 T
AD
—
—
—
T
SAMP
must be
≥ 132 ns
Timing Parameters
AD60
AD60
TPCS
Conversion Start from Sample
Trigger
Trigger
(3)
—
1.0 T
AD
—
—
Auto-Convert Trigger
(SSRC<2:0> = 111)
not selected
(SSRC<2:0> = 111)
not selected
AD61
TPSS
Sample Start from Setting
Sample (SAMP) bit
Sample (SAMP) bit
0.5 T
AD
—
1.5 T
AD
—
—
AD62
TCSS
Conversion Completion to
Sample Start (ASAM = 1)
Sample Start (ASAM = 1)
(3)
—
0.5 T
AD
—
—
—
AD63
TDPU
Time to Stabilize Analog Stage
from ADC Off to ADC On
from ADC Off to ADC On
(3)
—
—
2
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.
performance, especially at elevated temperatures.
3:
Characterized by design but not tested.