FULL BRIDGE INTEGRAL NOISE SHAPING FOR QUANTIZATION OF PULSE WIDTH MODULATION SIGNALS

摘要

Systems and methods are described for full bridge integral noise shaping for quantization of pulse width modulated signals. A method for full bridge integral noise shaping comprises: receiving a first and a second reference PWM signal (401, 402); summing the first and second reference PWM signals with a quantization error correction (504); quantizing the sum into a first and a second output PWM signal (404, 405); differentially integrating the first and second reference PWM signals and the first and second output PWM signals according to a full bridge integral noise shaping algorithm to obtain the quantization error correction. An apparatus for performing a full bridge integralnoise shaping quantization of a pulse modulated signal, includes: a single-ended to differential conversion circuit (203); and a full bridge INS quantizer circuit (403), coupled to the single-ended to differential conversion circuit.