Datasheet

dsPIC30F3014/4013
DS70138G-page 134  2010 Microchip Technology Inc.
19.7 ADC Speeds
The dsPIC30F 12-bit ADC specifications permit a
maximum of 200 ksps sampling rate. The table below
summarizes the conversion speeds for the dsPIC30F
12-bit ADC and the required operating conditions.
TABLE 19-1: 12-BIT ADC EXTENDED CONVERSION RATES
dsPIC30F 12-Bit ADC Conversion Rates
Speed
TAD
Minimum
Sampling
Time Min
R
s
Max VDD Temperature Channels Configuration
Up to 200
ksps
(1)
334 ns 1 TAD 2.5 k 4.5V to
5.5V
-40°C to +85°C
Up to 100
ksps
668 ns 1 T
AD 2.5 k 3.0V to
5.5V
-40°C to +125°C
Note 1: External V
REF- and VREF+ pins must be used for correct operation. See Figure 19-2 for recommended
circuit.
VREF-VREF+
ADC
ANx
S/H
CH
X
VREF-VREF+
ADC
ANx
S/H
CH
X
ANx or VREF-
or
AV
SS
or
AV
DD