Microchip Technology MA330012 数据表
dsPIC33F
DS70165E-page 348
Preliminary
©
2007 Microchip Technology Inc.
TABLE 26-41: ADC CONVERSION (10-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
Param
No.
Symbol
Characteristic
Min.
Typ
(1)
Max.
Units
Conditions
Clock Parameters
AD50
T
AD
ADC Clock Period
70
—
—
ns
T
CY
= 70ns, ADxCON3
in default state
AD51
t
RC
ADC Internal RC Oscillator Period
—
250
—
ns
Conversion Rate
AD55
t
CONV
Conversion Time
—
12 T
AD
—
—
AD56
F
CNV
Throughput Rate
—
—
1.1
Msps
AD57
T
SAMP
Sample Time
—
1 T
AD
—
—
Timing Parameters
AD60
t
PCS
Conversion Start from Sample
Trigger
Trigger
(3)
—
1.0 T
AD
—
—
Auto-Convert Trigger
(SSRC<2:0> =
(SSRC<2:0> =
111
) not
selected
AD61
t
PSS
Sample Start from Setting
Sample (SAMP) bit
Sample (SAMP) bit
0.5 T
AD
—
1.5 T
AD
—
—
AD62
t
CSS
Conversion Completion to
Sample Start (ASAM =
Sample Start (ASAM =
1
)
(3)
—
0.5 T
AD
—
—
—
AD63
t
DPU
Time to Stabilize Analog Stage
from ADC Off to ADC On
from ADC Off to ADC On
(3)
—
20
—
μ
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.
performance, especially at elevated temperatures.
3:
Characterized by design but not tested.