Title :
A continuous time switched capacitor DAC with offset and flicker noise cancellation
Author :
Longhitano, A.N. ; del Cesta, F. ; Bruschi, P. ; Simmarano, R.
Author_Institution :
Dipt. di Ing. dell´Inf., Univ. of Pisa, Pisa, Italy
Abstract :
A switched capacitor DAC, capable of producing a continuous time output signal, is presented. The multiphase conversion cycle allows cancellation of the input offset and low frequency noise of both op-amps used in the circuit. Electrical simulations, performed on a 12 bit prototype, designed by means of UMC 0.18 um MM/RF CMOS process, are shown. The main estimated performances are: 2.4 us conversion time, 0.42 mW power consumption at 1.8 V power supply, 0.49 mV rms output noise over a 400 kHz bandwidth.
Keywords :
CMOS integrated circuits; digital-analogue conversion; millimetre wave amplifiers; millimetre wave integrated circuits; operational amplifiers; signal denoising; UMC MM-RF CMOS process; continuous time output signal; continuous time switched capacitor DAC; digital to analog converters; electrical simulations; flicker noise cancellation; low frequency noise cancellation; multiphase conversion cycle; offset noise cancellation; op-amps; power 0.42 mW; size 0.18 mum; time 2.4 mus; voltage 0.49 mV; voltage 1.8 V; word length 12 bit; Arrays; Capacitors; Integrated circuit modeling; Low-frequency noise; Switches; Transient analysis; DA converters; offset cancellation; switched capacitor;
Conference_Titel :
Ph.D. Research in Microelectronics and Electronics (PRIME), 2013 9th Conference on
Conference_Location :
Villach
Print_ISBN :
978-1-4673-4580-4
DOI :
10.1109/PRIME.2013.6603151
