Relaxation digital‐to‐analogue converter

Abstract

The novel relaxation digital-to-analogue conversion technique, which takes advantage of the exponential impulse response of a first-order RC network to generate binary-weighted voltages, is proposed to design standard-cell based, mismatch-insensitive, ultra-low power, tiny digital-to-analogue converters targeting the requirements of Internet of Things applications. The effectiveness of the approach is validated by simulations and measurements performed on a proofof-concept 10 bit, 300 S/s field programmable gate array prototype.

An unconstrained relaxation digital‐to‐analog converter using optimal bit sequence

“…where the constant terms are combined. The mathematical model (2) clearly expresses the relationship between the value of the output voltage of the ReDAC and the binary encoding, which is similar to a knapsack problem. However, the code length n is not a fixed value for the actual binary code required in a Uc-ReDAC.…”

“…Introduction: Mostly digital DACs have attracted increasing attention from scholars due to their low power consumption, high system integration, and insensitivity to parasitic effects [1], and ReDAC is one of them [2].…”

breaking the boundaries between analogue and digital

“…Following the same track, the relaxation digital to analogue conversion approach has been devised to obtain fi nely quantised amplitude levels starting from binary-weighted digital words by using a plain shift register and taking advantage of the exponential impulse response of a fi rst order RC network as in Fig.4. Thanks to this approach, mismatch insensitive, highly effi cient digital to analogue converter can be developed as illustrated in this issue [6].…”

“…4. Thanks to this approach, mismatch insensitive, highly efficient digital to analogue converter can be developed as illustrated in this issue [6].…”

Dynamic and Static Calibration of Ultra-Low-Voltage, Digital-Based Operational Transconductance Amplifiers

“…An alternative approach [17][18][19][20][21][22][23][24][25][26][27] aims at the implementation of analog functions by digital means. Leveraging this concept, a VCO-based OTA [28] and a digital-based [15] OTA (DB-OTA), Figure 1f,g, have been recently proposed [13,16].…”