band-pass filters;digital-analogue conversion;sigma-delta modulation;bandpass DAC;high order mismatch noise shaping;multibit sigma delta modulator;vector feedback dynamic element matching;Filter banks;Finite impulse response filter;IIR filters;Modulation;Noise shaping;Vectors;Band-Pass DAC;DDS;DEM;Digital to Analog Converter;Noise-shaping;Sigma Delta;Static Mismatch
This paper presents a stable 4th order mismatch shaping
technique using vector feedback dynamic element matching (DEM). When
combined with a multi-bit sigma delta modulator, this DEM system allows
high resolution band pass signals to be produced, using a low resolution
unary weighted DAC.