EDN

Dither a power converter’s operating frequency to reduce peak emissions

Designers of dc/dc switching power converters face the challenge of controlling EMI (electromagnetic-interference) emissions produced during normal operation. If large enough, these emissions conduct ...
EDN

Novel technique improves dithering, reduces EMI

In off-line ac-to-dc converter dithering, the pulse width modulator (PWM) frequency has proven to reduce average EMI by changing it from narrowband to broadband. This article covers a novel technique ...
Electronic Design

Dither Can Boost Sampled Data System Performance By At Least 10 dB

Sample rates for analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) continue to evolve, now reaching 5 Gsamples/s at 10-bit resolutions and 1.5 Gsamples/s at 12 bits. These ...
Electronic Design

Birdies on the Wing: Questions about Clock Dithering and the FAA

Several years ago, when I wrote about a new product – a Class-D amplifier for headsets that relied on the inductance of the output cable to filter out the (dithered) harmonics of the device’s clock ...