A 9-Bit 70-MS/s Two-Stage SAR ADC With Passive Residue Transfer

Mosalmani, Alireza; Khoee, Mehdi; Shoaei, O.

doi:10.1109/tvlsi.2020.2974573

Cited by 5 publications

(1 citation statement)

References 25 publications

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“…Comparators are used in numerous electronic circuits in various applications, such as biomedical implants, optical detector front ends and analogue-to-digital converters (ADCs) [1][2][3]. Static comparators based on cascading high-gain amplifiers can scarcely be found in mixed-mode ICs that adopt clocked circuits.…”

Section: Introductionmentioning

confidence: 99%

Regenerative comparator with floating capacitor for energy‐harvesting applications

Pahlavanzadeh

Karami

2021

IET Circuits, Devices & Syst

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An energy-efficient regenerative comparator design is unveiled. A floating capacitor is utilized to protect the complete discharge of the preamplifier output nodes by NMOS input transistors. The introduced floating capacitor is flipped around the preamplifier to allow PMOS cross-couple transistor charge reutilization and elevate amplification gain at the integration phase. By increasing amplification gain, the input common mode voltage of the NMOS latch that is toggled within some delay is increased, too. Therefore, the latch stage is activated strongly, and regeneration delay is reduced. Simulation results corroborate that the proposed technique reduces power consumption and input-referred offset by more than 60% compared with results of similar previous works. Furthermore, the referred noise and delay are improved more than 30%.

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Section: Introductionmentioning

confidence: 99%