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7.2 Fast Fourier transforms (FFTs) and windowing

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Description

April 14, 2017

This video introduces the Fast Fourier Transform (FFT) as well as the concept of windowing to minimize error sources during ADC characterization.

Download webinar slides

adcs-fast-fourier-transforms-and-windowing-presentation-quiz.pdf

Additional information

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2Introduction to analog-to-digital converters (ADCs) (2)

These videos describe the key specifications listed in an analog-to-digital converter datasheet.

14:23

2.1 ADC DC specifications: INL, DNL, Cin, leakage, Vref

11:00

2.2 AC & DC specifications: Offset error, gain error, CMRR, PSRR, SNR and THD

3SAR and delta-sigma: Understanding the difference (4)

This series covers an explanation of the SAR and delta-sigma topology.

24:22

3.1 SAR and delta-sigma: Basic operation

22:22

3.2 Digital filters and latency

23:06

3.3 SAR and delta-sigma: Noise and drive considerations

11:08

3.4 Choosing SAR or delta-sigma

7AC specifications (5)

These videos describe how to analyze analog-to-digital converter (ADC) performance specifications that are measured using AC input signals.

11:18

7.1 Introduction to frequency domain

10:46

7.2 Fast Fourier transforms (FFTs) and windowing

06:59

7.3 Coherent sampling and filtering to improve SNR and THD

13:19

7.4 Aliasing and anti-aliasing filters

24:55

7.5 Hands-on experiment: Aliasing and anti-aliasing filters

9Driving the reference input on a SAR ADC (6)

This section covers SAR voltage reference specifications, reference behavior and methods for driving the reference input that minimizes error.

12:13

9.1 Voltage reference overview for ADC

14:27

9.2 Overview of reference drive topologies

09:58

9.3 SAR reference input: The CDAC

13:24

9.4 Understanding the SAR reference input model

18:55

9.5 Developing the SAR reference input model

20:41

9.6 Hands-on experiment: Reference drive

10Low-power SAR ADC system design (2)

These videos describe how to design a low-power data acquisition system using a successive approximation register (SAR) analog-to-digital converter (ADC).

18:54

10.1 SAR ADC power scaling

13:54

10.2 Hands-on experiment: System power scaling

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