A 880 nW, 100 kS/s, 13 bit Differential Relaxation-DAC in 180 nm

This paper presents a digital intensive, compact and energy efficient 13-bit, 100-kS/s Differential Relaxation Digital to Analog converter (Diff-ReDAC) in 180 nm CMOS. The DiffReDAC is able to operate in a supply voltage range from 0.45 V to 1 V having power consumption ranging from 420 nW to 2,650 nW. It has an area footprint of only 7,800$\mu \mathrm{m}^{2}$ while achieving, at 0. 6V a maximum INL (DNL) of 1. 07LSB(0.96LSB), 77. 81dB(77.52dB) of SFDR (THD) and 65. 82dB SINAD, resulting in 10. 64ENOB. Its low power dissipation of 880nW results in extremely competitive energy efficiency (area-normalzed energy efficiency) figures of merits FOM (FO$\mathrm{M}_{\mathrm{A}}$) of 172 dB(178dB).