DSPIC30F6010A MICROCHIP [Microchip Technology], DSPIC30F6010A Datasheet - Page 144
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DSPIC30F6010A
Manufacturer Part Number
DSPIC30F6010A
Description
High-Performance, 16-bit Digital Signal Controllers
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.DSPIC30F6010A.pdf
(236 pages)
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dsPIC30F6010A/6015
The configuration guidelines give the required setup
values for the conversion speeds above 500 ksps,
since they require external V
are some differences in the configuration procedure.
Configuration details that are not critical to the
conversion speed have been omitted.
Figure 20-2
conversion rates above 500 ksps.
FIGURE 20-2:
20.7.1
The configuration for 1 Msps operation is dependent on
whether a single input pin is to be sampled or whether
multiple pins will be sampled.
20.7.1.1
For conversions at 1 Msps for a single analog input, at
least two sample and hold channels must be enabled.
The analog input multiplexer must be configured so
that the same input pin is connected to both sample
and hold channels. The A/D converts the value held on
one S/H channel, while the second S/H channel
acquires a new input sample.
DS70150E-page 144
C2
0.1 μF
1 Msps CONFIGURATION
GUIDELINE
depicts the recommended circuit for the
R2
10
Single Analog Input
V
DD
A/D CONVERTER VOLTAGE REFERENCE SCHEMATIC
V
DD
C1
0.01 μF
REF
pins usage and there
V
V
SS
DD
10
R1
V
dsPIC30F6010A
DD
V
DD
V
DD
20.7.1.2
The A/D converter can also be used to sample multiple
analog inputs using multiple sample and hold channels.
In this case, the total 1 Msps conversion rate is divided
among the different input signals. For example, four
inputs can be sampled at a rate of 250 ksps for each
signal or two inputs could be sampled at a rate of
500 ksps for each signal. Sequential sampling must be
used in this configuration to allow adequate sampling
time on each input.
V
V
DD
SS
Multiple Analog Inputs
V
DD
C8
1 μF
C5
1 μF
© 2011 Microchip Technology Inc.
V
V
DD
DD
C7
0.1 μF
C4
0.1 μF
V
V
DD
DD
C6
0.01 μF
C3
0.01 μF
V
V
DD
DD