A high resolution multibit Σ−Δ DAC using noise shaping

Sensor technology for space, planetary, and terrestrial applications has improved at a rate which has outpaced the increase in resolution of conventional data converters. As a result, the electronics subsystem has suddenly become the bottleneck in sensor-based applications. High resolution digital-to-analogue converters in excess of 130 dB SNR are required to utilize the resolution provided by modern sensors. This paper presents an architecture for a digital-to-analogue converter (DAC) which can meet this specification across a bandwidth of 0.001-10 Hz.