sigma-delta analog-to-digital converter

[¦sig·mə ¦del·tə ‚an·ə‚läg tü ‚dij·əd·əl kən‚vərd·ər]

(electronics)

A converter that uses an analog circuit to generate a single-valued pulse stream in which the frequency of pulses is determined by the analog source, and then uses a digital circuit to repeatedly sum the number of these pulses over a fixed time interval, converting the pulses to numeric values.

References in periodicals archive ?

The company's proprietary piezo-resistive MEMS technology combined with a high accuracy sensing element, low noise analog front end, and 16-bit sigma-delta analog-to-digital converter (ADC) are asserted to deliver superior performance.

Rugged MEMs pressure sensors tout accuracy, ease of use

Symphony's parts list is quite short, consisting of one or two RF front-end chips with AM, FM and weather band tuning capability; a digital DSP base band/audio processor; an IF sigma-delta analog-to-digital converter with integrated audio analog-to-digital and digital-to-analog converters.

Radio enters the digital domain. (Parts Bin)

The new expansion modules add a 24-bit sigma-delta analog-to-digital converter, additional digital I/O lines, as well as the ability to control AC and DC loads.