Title :
A 3mW 74dB SNR 2MHz CT ΔΣ ADC with a tracking-ADC-quantizer in 0.13 μm CMOS
Author :
Dörrer, Lukas ; Kuttner, Franz ; Greco, Patrizia ; Derksen, Sven
Author_Institution :
Infineon, Villach, Austria
Abstract :
A third-order CT multibit ΔΣ ADC for wireless applications is implemented in 0.13 μm CMOS. Instead of using a 4b flash quantizer, a tracking ADC composed of 3 comparators with interpolation is used to reduce the power consumption. Over a bandwidth of 2MHz the SNR is 74dB. The ADC consumes 3mW from a 1.5V supply when clocked at 104MHz.
Keywords :
CMOS integrated circuits; analogue-digital conversion; comparators (circuits); delta-sigma modulation; interpolation; power consumption; 0.13 micron; 1.5 V; 104 MHz; 2 MHz; 3 mW; CMOS; comparators; interpolation; reduced power consumption; third-order CT multibit ΔΣ ADC; tracking ADC; wireless applications; Added delay; Bandwidth; Capacitance; Counting circuits; Energy consumption; Feedforward systems; GSM; Jitter; Linearity; Wireless communication;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1494084
