12-Bit 5 MS/s SAR ADC with Hybrid Type DAC for BLE Applications

Rikan, Behnam Samadpoor; Choi, Daeyoung; Rad, Reza; Hejazi, Arash; Pu, YoungGun; Lee, Kang-Yoon

doi:10.1109/icufn49451.2021.9528534

Cited by 2 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When designing the DAC circuit, considering the layout area of the DAC in the design, many researchers opt to reduce the DAC layout area as much as possible by using a bridged capacitor approach. However, in this paper, a capacitor-resistor-based structure is employed to effectively reduce the DAC layout area [4][5]. For the comparator circuit, this paper utilizes a structure that combines a cascade of three-stage pre-amplifiers with one latch.…”

Section: Introductionmentioning

confidence: 99%

Design of 12-bit 4 MS/s SAR ADC based on 40nm process

Zhu,

Yang,

Lin

et al. 2024

Third International Conference on Computer Technology, Information Engineering, and Electron Materials (CTIEEM 2023)

View full text Add to dashboard Cite

This paper presents the design of a 12-bit 4 MS/s successive approximation register (SAR) analog-to-digital converter (ADC) based on the 40nm CMOS process. The internal structure of the ADC employs an "8MSB+4LSB" hybrid capacitive-resistive structure in the digital-to-analog converter (DAC) design to reduce layout area. The comparator circuit utilizes a dynamic comparator structure consisting of a cascade of three pre-amplifiers and a single latch, with output offset storage used to minimize comparator offset voltage. The layout design is symmetric to enhance device matching. In post-simulation under the conditions of 1.1 V analog voltage, a 941.40625 KHz input sine wave signal, and a 4 MHz sampling clock, the SAR ADC achieved an effective number of bits (ENOB) is 11.88 bits, a signal to noise and distortion ratio (SNDR) is 73.2941 dB, a spurious-free dynamic range (SFDR) is 89.4 dB, a power consumption is 1.18 mW, and a figure-of-merit (FoM) is 168.6 dB.

show abstract

Section: Introductionmentioning

confidence: 99%