TIPL 4301 TI Precision Labs ADCs Created by Art Kay Luis Chioye Presented by Peggy Liska 1 Time Domain vs Frequency Domain 2 1Vpk 1kHz 01Vpk 10kHz Sum of both signals Fourier Spectrum for ID: 724855
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Slide1
Introduction to Frequency DomainTIPL 4301 TI Precision Labs – ADCs
Created by Art Kay, Luis ChioyePresented by Peggy Liska
1Slide2
Time Domain vs. Frequency Domain2
1Vpk @ 1kHz
0.1Vpk @ 10kHz
Sum of both signals
Fourier Spectrum for
Vout
1Vpk @ 1kHz
0.1Vpk @ 10kHz
Time Domain
Frequency DomainSlide3
Infinite Series for a Triangle Wave3
Time Domain
Frequency Domain
Slide4
Dynamic Characteristics4Slide5
Signal to Noise Ratio (SNR)5Slide6
Signal to Noise Ratio (SNR)6
Measured Ratio:
Measured dB:
Ideal ADC SNR:
Where N is the number of bits
e.g. N
= 10 for a 10 bit converter
Measured Ratio:
Measured dB:
Ideal ADC SNR:
Where N is the number of bits
e.g. N
= 10 for a 10 bit converterSlide7
Ideal SNR calculation from Resolution 7
According to the previous equation:
Slide8
Nonlinearity8Slide9
Total Harmonic Distortion (THD), SINAD9Slide10
Total Harmonic Distortion (THD), THD+N, SINAD10Slide11
Total Harmonic Distortion (THD), THD+N11Slide12
Thanks for your time!Please try the quiz.12Slide13
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