Citation: N. Sakimura et al., Multibit delta-sigma architectures with two-level feedback loop using a dual-quantization architecture, IEICE T FUN, E84A(2), 2001, pp. 497-505
Citation: A. Iwata et al., The architecture of delta sigma analog-to-digital converters using a voltage-controlled oscillator as a multibit quantizer, IEEE CIR-II, 46(7), 1999, pp. 941-945