VIDEO SERIES

# Precision labs series: Analog-to-digital converters (ADCs)

These on-demand courses and tutorials include introductory ideas about device architecture in addition to advanced, application-specific problem-solving, using both theory and practical knowledge. Industry experts present each topic in order to help reduce design time and move quickly from proof-of-concept to productization. The ADC (analog-to-digital converter or A/D converter) curriculum is segmented into major topic learning categories, each of which contains short training videos, multiple choice quizzes and short answer exercises.

### SAR and delta-sigma: Basic operation

#### Presenter(s)

#### Resources

##### Topics

###### Understanding the difference between SAR and delta-sigma ADCs (4)

###### ADC drive topologies (5)

SAR ADC input types

00:11:46Determining a SAR ADC’s linear range when using operational amplifiers

00:17:18Hands-on experiment: Crossover distortion on ADC drive

00:11:36Determining a SAR ADC’s linear range when using instrumentation amplifiers

00:09:17Driving a SAR ADC with a fully differential amplifier

00:13:37###### AC and DC specifications (7)

Introduction to frequency domain

00:11:17Fast Fourier transforms (FFTs) and windowing

00:10:45Coherent sampling and filtering to improve SNR and THD

00:06:58Aliasing and anti-aliasing filters

00:13:19Hands-on experiment: Aliasing and anti-aliasing filters

00:24:54ADC DC specifications: INL, DNL, Cin, leakage, Vref

00:14:22AC & DC specifications: Offset error, gain error, CMRR, PSRR, SNR and THD

00:11:00###### ADC noise (13)

Introduction to noise in ADC systems

00:13:01Types of noise in ADCs

00:15:44ADC noise measurement, methods and parameters

00:25:34System noise performance for low-speed delta-sigma ADCs

00:25:06Analyzing and calculating noise bandwidth in ADC systems – multi-stage filters

00:24:37Analyzing and calculating noise bandwidth in ADC systems – the digital filter

00:23:48Gain impact on noise, ADC FSR and dynamic range

00:22:28Calculating amplifier + ADC total noise: design examples

00:13:12Introduction to reference noise in ADC systems

00:15:36Reference noise affect on signal chain performance

00:17:55Reducing reference noise ADC systems: ratiometric, internal, external

00:11:32Calculating the total noise for ADC systems

00:10:11Hands-on experiment: ADC noise

00:16:35###### Error sources (3)

###### Digital communications basics (6)

###### SAR ADC input driver design (7)

Introduction to SAR ADC front-end component selection

00:17:36Selecting and verifying the driver amplifier

00:09:01Building the SAR ADC model

00:12:17Refine the Rfilt and Cfilt values on ADC drive

00:13:42Hands-on experiment: Amplifier settling and charge bucket filter design

00:22:03Math behind the R-C component selection

00:06:09Driving SAR ADC without amplifiers

00:15:21###### Driving the reference input on a SAR ADC (6)

###### Protecting ADCs from electrical overstress (EOS) (12)

EOS and ESD on ADC

00:16:00External EOS protection devices

00:10:32Import diode's PSpice model into TINA

00:03:55Protecting low voltage ADC from high voltage amp

00:23:28Protecting low voltage ADC: Improved solution

00:07:15Protecting ADC with TVS diode

00:19:21Protecting ADC with TVS diode: Improved solution

00:14:43Protecting Delta-Sigma ADC: RTD Overview

00:12:25Protecting Delta-Sigma ADC: Input Protection Circuit Operation

00:11:36Protecting Delta-Sigma Component Selection

00:11:22Protecting Delta-Sigma with TVS: Performance Impact

00:14:06Protecting Delta-Sigma ADC: Special Input Range

00:08:10###### PCB design for good EMC (8)

Introduction - PCB design for good EMC

00:17:37PCB trace as a wave guide

00:15:50PCB stackup impact on performance

00:09:02PCB trace impedance matching

00:11:48Crosstalk on PCB layouts

00:16:26Data integrity issues

00:17:47Decoupling capacitors

00:17:50Electromagnetic compatibility testing methods and standards

00:22:16###### Measuring RTDs with precision ADCs (11)

Introduction To RTDs

00:13:07RTD Measurement Circuits

00:25:00Challenges with 3-wire RTD systems

00:32:34Measuring multiple RTDs with a multiplexed ADC & intro to conversion latency

00:24:07Designing software versus hardware configurable multi-RTD measurement systems

00:16:53Initial error sources in RTD measurement systems

00:13:49Temperature drift & other error sources in RTD measurement systems

00:21:26Estimating total error in RTD measurement systems

00:19:43Calibrating an RTD measurement system

00:20:45Over temperature calibration in RTD measurement systems

00:15:07Selecting component values for RTD measurement systems

00:18:30###### Low-power SAR ADC system design (2)

###### High-speed ADC fundamentals (7)

Comparing high-speed analog-to-digital (ADC) and digital-to-analog (DAC) converter architectures

00:18:40Jitter's impact on signal-to-noise ratio (SNR) for high-speed analog-to-digital converters (ADCs)

00:08:00Understanding signal to noise ratio and noise spectral density in high speed data converters

00:14:32Bandwidth vs. frequency: Subsampling concepts

00:09:16Sampling vs. data rate, decimation (DDC) and interpolation (DUC) in high-speed data converters

00:18:40Understanding sampling, Nyquist zones, harmonics and spurious performance in high-speed ADCs

00:04:24High-speed data converter signal processing: Real and complex modulation

00:15:44## Precision labs series: Analog-to-digital converters (ADCs)

###### Understanding the difference between SAR and delta-sigma ADCs (4)

###### ADC drive topologies (5)

SAR ADC input types

00:11:46Determining a SAR ADC’s linear range when using operational amplifiers

00:17:18Hands-on experiment: Crossover distortion on ADC drive

00:11:36Determining a SAR ADC’s linear range when using instrumentation amplifiers

00:09:17Driving a SAR ADC with a fully differential amplifier

00:13:37###### AC and DC specifications (7)

Introduction to frequency domain

00:11:17Fast Fourier transforms (FFTs) and windowing

00:10:45Coherent sampling and filtering to improve SNR and THD

00:06:58Aliasing and anti-aliasing filters

00:13:19Hands-on experiment: Aliasing and anti-aliasing filters

00:24:54ADC DC specifications: INL, DNL, Cin, leakage, Vref

00:14:22AC & DC specifications: Offset error, gain error, CMRR, PSRR, SNR and THD

00:11:00###### ADC noise (13)

Introduction to noise in ADC systems

00:13:01Types of noise in ADCs

00:15:44ADC noise measurement, methods and parameters

00:25:34System noise performance for low-speed delta-sigma ADCs

00:25:06Analyzing and calculating noise bandwidth in ADC systems – multi-stage filters

00:24:37Analyzing and calculating noise bandwidth in ADC systems – the digital filter

00:23:48Gain impact on noise, ADC FSR and dynamic range

00:22:28Calculating amplifier + ADC total noise: design examples

00:13:12Introduction to reference noise in ADC systems

00:15:36Reference noise affect on signal chain performance

00:17:55Reducing reference noise ADC systems: ratiometric, internal, external

00:11:32Calculating the total noise for ADC systems

00:10:11Hands-on experiment: ADC noise

00:16:35###### Error sources (3)

###### Digital communications basics (6)

###### SAR ADC input driver design (7)

Introduction to SAR ADC front-end component selection

00:17:36Selecting and verifying the driver amplifier

00:09:01Building the SAR ADC model

00:12:17Refine the Rfilt and Cfilt values on ADC drive

00:13:42Hands-on experiment: Amplifier settling and charge bucket filter design

00:22:03Math behind the R-C component selection

00:06:09Driving SAR ADC without amplifiers

00:15:21###### Driving the reference input on a SAR ADC (6)

###### Protecting ADCs from electrical overstress (EOS) (12)

EOS and ESD on ADC

00:16:00External EOS protection devices

00:10:32Import diode's PSpice model into TINA

00:03:55Protecting low voltage ADC from high voltage amp

00:23:28Protecting low voltage ADC: Improved solution

00:07:15Protecting ADC with TVS diode

00:19:21Protecting ADC with TVS diode: Improved solution

00:14:43Protecting Delta-Sigma ADC: RTD Overview

00:12:25Protecting Delta-Sigma ADC: Input Protection Circuit Operation

00:11:36Protecting Delta-Sigma Component Selection

00:11:22Protecting Delta-Sigma with TVS: Performance Impact

00:14:06Protecting Delta-Sigma ADC: Special Input Range

00:08:10###### PCB design for good EMC (8)

Introduction - PCB design for good EMC

00:17:37PCB trace as a wave guide

00:15:50PCB stackup impact on performance

00:09:02PCB trace impedance matching

00:11:48Crosstalk on PCB layouts

00:16:26Data integrity issues

00:17:47Decoupling capacitors

00:17:50Electromagnetic compatibility testing methods and standards

00:22:16###### Measuring RTDs with precision ADCs (11)

Introduction To RTDs

00:13:07RTD Measurement Circuits

00:25:00Challenges with 3-wire RTD systems

00:32:34Measuring multiple RTDs with a multiplexed ADC & intro to conversion latency

00:24:07Designing software versus hardware configurable multi-RTD measurement systems

00:16:53Initial error sources in RTD measurement systems

00:13:49Temperature drift & other error sources in RTD measurement systems

00:21:26Estimating total error in RTD measurement systems

00:19:43Calibrating an RTD measurement system

00:20:45Over temperature calibration in RTD measurement systems

00:15:07Selecting component values for RTD measurement systems

00:18:30###### Low-power SAR ADC system design (2)

###### High-speed ADC fundamentals (7)

Comparing high-speed analog-to-digital (ADC) and digital-to-analog (DAC) converter architectures

00:18:40Jitter's impact on signal-to-noise ratio (SNR) for high-speed analog-to-digital converters (ADCs)

00:08:00Understanding signal to noise ratio and noise spectral density in high speed data converters

00:14:32Bandwidth vs. frequency: Subsampling concepts

00:09:16Sampling vs. data rate, decimation (DDC) and interpolation (DUC) in high-speed data converters

00:18:40Understanding sampling, Nyquist zones, harmonics and spurious performance in high-speed ADCs

00:04:24High-speed data converter signal processing: Real and complex modulation

00:15:44