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% Delta-Sigma Toolbox% Version 7.2 2008-02-08% R. Schreier, Analog Devices Inc.%% Consult the DSToolbox.pdf and OnePageStory.pdf % files for more complete documentation.%%% Modulator synthesis and simulation% synthesizeNTF - Noise transfer function (NTF) synthesis.% clans - Closed-loop analysis of noise shapers % (NTF synthesis for multi-bit modulators).% simulateDSM - Simulate a delta-sigma modulator using either % its NTF or its state-space description.% simulateSNR - Use simulateDSM to simulate a DSM with sine wave inputs % of varying amplitudes and then determine the SNR for each.% predictSNR - SNR predicttion for binary modulators % (Ardalan & Paulos method)%% Modulator realization% realizeNTF - Compute coefficients for a particular modulator topology.% stuffABCD - Create the state-space description of a modulator given% the coefficients for a particular topology.% scaleABCD - Perform dynamic-range scaling.% mapABCD - Convert a state-space description back to coefficients.%% Other functions related to delta-sigma % simulateESL - Simulate the element selection logic in a mismatch-shaping% DAC.% designHBF - Design multiplierless half-band filters which use the % - the Saramaki recursive filter structure.% findPIS - Compute a positively-invariant set for a DSM. (The % PosInvSet sub-directory will need to be added to your PATH)% infnorm - Calculate the infinity norm (maximum gain) of a TF.%% Demonstrations and Examples% dsdemo1 - Synthesize a 5th-order lowpass and an 8th-order bandpass NTF.% dsdemo2 - Time-domain simulation and SNR calculation.% dsdemo3 - Modulator realization and dynamic range scaling.% dsdemo4 - Audio demonstration of MOD1 and MOD2% dsdemo5 - Simulate the element selection logic of a mismatch-shaping DAC.% dsdemo6 - Design a hardware-efficient halfband filter.% dsdemo7 - Find positively-invariant sets for second-order (and third-order) modulators.% dsdemo8 - Continuous-time bandpass modulator design using LC tanks.% dsexample1 - Discrete-time lowpass modulator.% dsexample2 - Discrete-time bandpass modulator.% dsexample3 - Continuous-time bandpass modulator, including ADICE .ckt and .use files. % (ADI internal use only.)% Copyright (c) 1993-2008 R. Schreier
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