Discrete-time signal processing
Discrete-time signal processing
DSP-Based Testing of Analog and Mixed-Signal Circuits
DSP-Based Testing of Analog and Mixed-Signal Circuits
Arbitrary-Precision Signal Generation for Bandlimited Mixed-Signal Testing
Proceedings of the IEEE International Test Conference on Driving Down the Cost of Test
An Integration of Memory-Based Analog Signal Generation into Current DFT Architectures
Proceedings of the IEEE International Test Conference on Test and Design Validity
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This paper describes a new method to generateanalog signals with high precision at very lowhardware complexity. This method consists in reproducingperiodically a recorded portion of the bitstream outputof a sigma-delta modulator. This technique utilizesless hardware than conventional frequency synthesismethods and does not require a multi-bit DAC. However,when a multi-bit DAC is already available, the techniquecan be used to increase the quality of the signal inthe frequency band of interest using existing hardware.The paper demonstrates how this method can be used togenerate signals for Built-In Self-Test and standardAnalog and Mixed-Signal Test. Experimental resultsillustrating the design simplicity and low overhead aregiven.