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14 Results

Detecting magnetic tampering using hall-effect sensors

For anti-tampering, it is common to try to detect the presence of a strong magnet. In this section, we will cover the use of hall sensors for low-power detection of strong magnetic fields in three dimensions.  Details on our magnetic tamper detection reference design, TIDA-00839, will be provided as well as some of the design considerations that were kept in mind when creating this reference design.  

Hardening a meter against magnetic tamper attacks

In this section, we will cover how to harden a meter against these magnetic tamper attacks by using shunts for current sensors. For poly-phase implementations, I will go over how to use isolated delta sigma modulators to add the necessary isolation to use shunt current sensors and create magnetically immune poly-phase energy measurement systems. The TIDA-00601 and TIDA-01094 reference designs, which show how to implement a poly-phase isolated shunt measurement system, will be discussed as well as the associated AMC1304 high-side power supplies used in these designs.

TI Precision Labs – ADCs: Hands-on Experiment – Aliasing and Anti-Aliasing Filters

Date:
March 6, 2018

Duration:
24:55
This hands-on experiment demonstrates aliasing and the effect of anti-aliasing filters.

How High-Voltage Isolation Technology Works

Want to understand how high-voltage isolation technology works? Watch and learn about reliability testing for isolation. Filmed in TI's high-voltage lab, this series of videos will focus on capacitive isolation structure, working voltage reliability, withstand voltage capability, methods for testing reliability, and more.

TI Precision Labs – ADCs: Hands-on Experiment – ADC Noise

Date:
January 19, 2018

Duration:
16:35
This hands-on experiment shows how the front-end driver is impacted by resistor thermal noise.

TI Precision Labs – ADCs: Determining a SAR ADC’s Linear Range when using Operational Amplifiers

Date:
April 14, 2017

Duration:
17:19
This video shows how to design the front-end op-amp drive circuit for linear operation.

TI Precision Labs – ADCs: Understanding and Calibrating the Offset and Gain for ADC Systems

Date:
April 14, 2017

Duration:
13:22
This video discusses how gain and offset errors can be calculated and eliminated through calibration.

TI Precision Labs – ADCs: Using SPICE Monte Carlo Tool for Statistical Error Analysis

Date:
April 14, 2017

Duration:
07:09
This video shows how the TINA-SPICE Monte Carlo analysis can be used for statistical error analysis.

TI Precision Labs – ADCs: Calculating the Total Noise for ADC Systems

Date:
April 14, 2017

Duration:
10:11
This video walks through how to predict the overall system noise for an ADC, amplifier, and reference.

TI Precision Labs – ADCs: Building the SAR ADC Model

Date:
April 14, 2017

Duration:
12:17
This video walks through the process of creating a TINA Spice Model for a SAR ADC.

TI Precision Labs – ADCs: Refine the Rfilt and Cfilt Values

Date:
April 14, 2017

Duration:
13:43
This video walks through the process for optimizing the selection of the external R and C values.
ADC drive topologies: using an INA

TI Precision Labs – ADCs: Determining a SAR ADC’s Linear Range when using Instrumentation Amplifiers

Date:
April 14, 2017

Duration:
09:17
This video shows how to design a front-end instrumentation amplifier drive circuit for linear operation.

TI Precision Labs – ADCs: Driving a SAR ADC with a Fully Differential Amplifier

Date:
April 14, 2017

Duration:
13:38
This video explains how to design ADC drive circuits using fully differential amplifiers, or FDAs.  

TI Precision Labs – ADCs: Math Behind the R-C Component Selection

Date:
April 14, 2017

Duration:
06:10
This video walks through the mathematical algorithm used in the ADC SAR Drive Calculator.
14 Results
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