The LTC2645 converts pulse-width-modulation (PWM) input signals to 12-bit accurate, stable buffered voltage outputs in less than 8 µs, thus removing the ripple and delay often plaguing analog filters.

Variable regulated power supplies are handy tools found on well-equipped electronics lab benches. The symmetrical varieties that produce equal voltage outputs of opposite polarity, are even more so.

A recent Design Idea, “Three discretes suffice to interface PWM to switching regulators,” demonstrated one way to use PWM to control the output of a typical switching voltage regulator. There were ...