[Igor] made a VU meter with LEDs using 8 LEDs and 8 comparators. This is a fast way to get one of 8 bits to indicate an input voltage, but that’s only the equivalent of a 3-bit analog to digital ...

Introduced as the industry's fastest and most accurate 16-bit, successive-approximation (SAR) a/d converter, the AD7621 delivers up to 3 Msamples/s and a ±1 LSB INL with no missing codes. The device ...