AC164120 Microchip Technology, AC164120 Datasheet - Page 30
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AC164120
Manufacturer Part Number
AC164120
Description
BOARD SIGNAL ANALYSIS PICKIT
Manufacturer
Microchip Technology
Series
PICtail™r
Specifications of AC164120
Main Purpose
Interface, Signal Analysis
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
PICkit™ PICtail™1
Primary Attributes
Real-time Strip Chart, Oscilloscope, Fast Fourier Transformation (FFT)
Secondary Attributes
Histogram
Silicon Manufacturer
Microchip
Core Architecture
PIC
Core Sub-architecture
PIC16
Features
Real-Time Strip Chart, Fast Fourier Transformation
Silicon Core Number
PIC16F
Silicon Family Name
PIC16F6xxx
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
PICkit Flash Starter Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AC164120
Manufacturer:
Microchip Technology
Quantity:
135
Signal Analysis PICtail™ Daughter Board User’s Guide
3.5
DS51476A-page 26
LESSON 3 – PULSE WIDTH MODULATED GENERATED SINE WAVE
A sine wave can be generated from a low-pass filtered Pulse Width Modulated (PWM)
signal. The duty cycle of the PWM signal is set to the magnitude of a sine wave at a
prescribed sample rate. The sample rate sets the frequency of the sine wave.
Figure 3-7 is an oscilloscope screen capture of the PWM signal. Persistence has been
set on to capture the varying duty cycle. Figure 3-8 is the resulting sine wave after the
PWM signal in Figure 3-7 has been low-pass filtered.
Source code and hex files are available on the CD-ROM.
FIGURE 3-7:
FIGURE 3-8:
MODULATED PWM SIGNAL (BEFORE FILTERING)
SINE WAVE (AFTER PWM FILTERING)
2004 Microchip Technology Inc.