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A 24 nW 10-bit 10 kS/s ultra-low-power SAR ADC for biomedical devices.
- Source :
- AIP Advances; Feb2023, Vol. 13 Issue 2, p1-6, 6p
- Publication Year :
- 2023
-
Abstract
- This paper proposed an ultra-low-power successive approximation register analog to digital converter (ADC) for medical implant devices. To reduce power consumption, the novel techniques presented in this paper are a tri-state capacitor unit, a novel switch scheme, and a new low static power comparator. Tri-state capacitor unit reduces down power without the use of middle voltage reference. The proposed switch scheme can complete the most-significant bit 3-bit conversion without any power consumption. The offset of the low static power comparator is only optimized by physical design. This ADC is fabricated in a 110 nm 1P5M CMOS process. The reference voltage of DAC is 1 V, and the supply voltage of comparator and digital logic is 1.5 V. At 10 kS/s sampling rate, the signal to noise and distortion ratio (SNDR) is 57.57 dB and power consumption is 24 nW. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 13
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 162171678
- Full Text :
- https://doi.org/10.1063/5.0138835