DSPIC30F2012CT-20I/SO View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
DSPIC30F2012CT-20I/SO Datasheet PDF : 206 Pages
| |||
dsPIC30F2011/2012/3012/3013
16.7 ADC Speeds
The dsPIC30F 12-bit ADC specifications permit a
maximum of 200 ksps sampling rate. Table 16-1
summarizes the conversion speeds for the dsPIC30F
12-bit ADC and the required operating conditions.
Figure 16-2 depicts the recommended circuit for the
conversion rates above 200 ksps. The dsPIC30F2011
is shown as an example.
TABLE 16-1: 12-BIT ADC EXTENDED CONVERSION RATES
dsPIC30F 12-bit ADC Conversion Rates
Speed
TAD Sampling
Minimum Time Min
Rs Max
VDD
Temperature
Up to 200
ksps(1)
334 ns
1 TAD 2.5 kΩ 4.5V to 5.5V -40°C to +85°C
Channels Configuration
ANx
CHX
S/H
VREF- VREF+
ADC
Up to 100
ksps
668 ns
1 TAD 2.5 kΩ 3.0V to 5.5V -40°C to +125°C
VREF- VREF+
or or
AVSS AVDD
ANx
ANx or VREF-
CHX
S/H
ADC
Note 1: External VREF- and VREF+ pins must be used for correct operation. See Figure 16-2 for recommended
circuit.
FIGURE 16-2:
ADC VOLTAGE REFERENCE SCHEMATIC
VDD
R2
10
See Note 1:
VDD
VDD
VDD
C2
C1
VDD
0.1 μF
0.01 μF
C8
C7
C6
1 μF
0.1 μF 0.01 μF
R1
10
1
21
2
20
3
19
4 dsPIC30F2011 18
VDD
VSS
VDD
6
VSS
7
15
AVDD
AVDD
AVDD
C5
C4
C3
1 μF
0.1 μF 0.01 μF
VDD
Note 1: Ensure adequate bypass capacitors are provided on each VDD pin.
DS70139F-page 114
© 2008 Microchip Technology Inc.
Share Link: 