Differential signaling is a common technique for obtaining high noise immunity for critical signals in high-speed digital pc-board systems. The pc board's traces, carrying differential signals, are often edge-coupled offset striplines, with the traces sandwiched between two reference planes...
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Spice models differential stripline
A pitch-linear VCO. Part 2 - Taking it further
In this second part, we’ll look at some alternative ways of arranging things for other possible applications...
A pitch-linear VCO. Part 1 - Getting it going
An ongoing project (or gadget) called for a means of generating an audio output to represent a varying voltage level. Ho hum: that sounds like a voltage-controlled oscillator...
Peak power point
Imagine that you have a voltage source in series with some source resistance feeding power to a variable load. The relationship between load voltage, load current, and cell current can be drawn...
A simple, purely analog -130 dB THD sine wave generator
The recent Design Idea “Getting an audio signal with a THD < 0.0002% made easy” discloses a low THD sine generator which led me to dust off a design...
TI introduces the world's smallest MCU, enabling innovation in the tiniest of applications
Texas Instruments introduced the world's smallest MCU, expanding its comprehensive Arm Cortex-M0+ MSPM0 MCU portfolio. Measuring only 1.38 mm2, about the size of a black pepper flake...
Three discretes suffice to interface PWM to switching regulators
It’s remarkable how many switching regulator chips use the same basic two-resistor network for output voltage programming...
Single-supply single-ended input to pseudo class A/B differential output amp
From the micromixer topology by Barrie Gilbert, this amplifier allows a single-ended input to be converted to a Class A/B current output from a single supply...
The Internet formed in the 1960s - How did it start?
Initially imagined by Nikola Tesla in the early 1900s, the concept of a world wide web didn’t see creation until 60 years later. Take a trip alongside the history of the internet...
1 A, 20V PWM DAC current source with tracking preregulator
This design idea reprises another “1 A, 20 V, PWM controlled current source”. Like the earlier circuit, this design integrates an LM3x7 adjustable regulator with a PWM DAC to make a programmable 20 V, 1 A current source...
