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 µm2 while achieving, at 0.6 V a maximum INL (DNL) of 1.07 LSB (0.96 LSB) , 77.81 dB (77.52 dB) of SFDR (THD) and 65.82 dB SINAD, resulting in 10.64 ENOB. Its low power dissipation of 880 nW results in extremely competitive energy efficiency (area-normalzed energy efficiency) figures of merits FOM (FOMA) of 172 dB (178 dB).