It’s just one of those nights …
Cold. Quiet. Still.
The smell of rain is suffocating.
A faint flash in the distance, followed by a long, low rumble.
The storm’s coming …
… just one of those nights …
A night…
In my last post, I talked about the different types of digital filters commonly used in delta-sigma analog-to-digital converters (ADCs). In this post, let’s focus on the most common type of digital filter used in…
Have you ever wondered how delta-sigma analog-to-digital converters (ADCs) can get such fine resolution across a variety of bandwidths? The secret lies in the digital filter. Delta-sigma ADCs are different…
In part 1 of this series, I explained how you can calculate the input voltage to an analog-to-digital converter (ADC) by multiplying the ADC’s output code by the least-significant bit (LSB) size using Equation 1:
To calculate the ADC’s LSB size…
Many newcomers to analog-to-digital converters (ADCs) wonder how to convert their ADC code to a voltage. Or perhaps their question is specific to the application, such as how to convert the ADC code back to a physical quantity like current, temperature…
Have you ever evaluated the noise performance of an ADC and found that your measured performance differs from the specified performance given in the device datasheet? Achieving high resolution in a precision data…
** This is the second post in a three-part ENOB blog series that launched on Halloween. You can find part 1 here if you missed it **
Drip … drip … drip …
Drip … drip … drip …
A broken bottle leaks
liquid off a…
In my last post, I discussed two important characteristics of delta-sigma analog-to-digital converters (ADCs) that simplify the design of your anti-aliasing filter: an oversampling architecture and a supplemental digital decimation filter. The oversampling…
My last post introduced the concept of signal aliasing and how it manifests itself in data-acquisition systems. When out-of-band signals alias into the passband, they overlap lower frequency content and mask the true signals you’re trying to measure.…
Have you ever seen the wheels on a car actually spin backward while the car is moving forward? Barring an extreme stunt, I’ll bet you probably saw it in a car commercial. Have you ever wondered why?
Real life happens in continuous time, but a video…
In the first two posts of the delta-sigma (ΔΣ) analog-to-digital converter (ADC) basics blog series, we have discussed the two basic building blocks used in ΔΣ ADCs: the modulator and the digital filter. You’ll encounter many other integrated…
Designing with a delta-sigma analog-to-digital converter can help achieve the highest possible resolution in your system. But to maximize this architecture’s benefits, it helps to understand how the delta-sigma modulator and digital filter in the ADC…
The ΔΣ ADC is constructed from a ΔΣ modulator and a digital filter. The modulator converts the analog input into a digital bit stream, while the digital filter translates the bit stream into a data word that represents the magnitude of the analog input…
Many applications, such as motor drives and power inverters, require isolated measurements of both current and voltage. Although optimized for current sensing applications, TI’s isolated delta-sigma modulators enable high-performance voltage measurements…
Three… two…one…happy New Year!
As the fond memories of 2014 give way to the exciting possibilities of 2015, many people begin the New Year by making resolutions: some modulate their junk food intake; others filter out a bad habit;…