2002 · 17 citations · 5 references
EngineeringComputer EngineeringElectrical EngineeringAnalog ElectronicsLow-power DesignMicroelectronicsAnalog Integrated CircuitsCmos Circuit DesignDigital Signal ProcessingMixed-signal Integrated Circuit DesignMixed-signal IntegrationRadio-frequency Integrated CircuitsCmos Analog Circuit DesignCmos Analog Integrated CircuitsCmos Logic CircuitsComparator DesignContinuous-time FiltersFlip-flop ArchitecturePower ConsumptionRf Cmos Design
A 70-MHz continuous-time CMOS band-pass /spl Sigma//spl Delta/ modulator for GSM receivers is presented. Impulse-invariant-transformation is used to transform a discrete-time loop-filter transfer function into continuous-time. The continuous-time loop-filter is implemented using a transconductor-capacitor (Gm-C) filter. A latched-type comparator and a true-single-phase-clock (TSPC) D flip-flop are used as the quantizer of the /spl Sigma//spl Delta/ modulator. Implemented in a MOSIS HP 0.5-/spl mu/m CMOS technology, the chip area is 857 /spl mu/m/spl times/420 /spl mu/m, and the total power consumption is 39 mW. At a supply voltage of 2.5 V, the maximum SNDR is measured to be 42 dB, which corresponds to a resolution of 7 bits.
5
High-speed CMOS circuit technique
Jiren Yuan, C. Svensson · IEEE Journal of Solid-State Circuits · 1989 · 792 citations
Engineering, Computer Engineering, Electrical Engineering +16