PPT-– 1 – Data Converters Data Converter Basics Professor Y. Chiu

EECT 7327 Fall 2014 Data Converter Basics AD and DA Conversion 2 Data Converters Data Converter Basics Professor Y Chiu EECT 7327 Fall 2014 AD Conversion DA Conversion. Data Converter . Design 2. Introduction. 1. Data Converters. Signal. Conditioning. ADC. MCU. DAC. Post. Processing. -Amplification. -Anti-aliasing. . filter. ex. Smoothing filter. Analog-to-Digital Converters . . . 1. Converter Fundamentals. James Bryant. University of Leicester. March 2003. Converter Fundamentals – Leicester U – March 2003. . . 2. Converters. Data Converters. Professor Yun Chiu. © . 2014. Erik . Jonsson. School of Electrical Engineering and Computer Science . University of Texas at . Dallas. Logistics. – . 2. –. Instructor: Professor Yun Chiu. Subranging. ADCs Professor Y. Chiu. EECT 7327 . Fall 2014. Subranging. ADC. Subranging. ADC Architecture. – . 2. –. Data Converters . Subranging. ADCs Professor Y. Chiu. EECT 7327 . Fall 2014. EECT 7327 . Fall 2014. Interpolation. Interpolation. – . 2. –. Data Converters Interpolating and Folding ADC Professor Y. Chiu. EECT 7327 . Fall 2014. Uniformly spaced zero-crossings in flash ADCs. EECT 7327 . Fall 2014. Oversampling ADC. Nyquist. -Rate ADC. – . 2. –. Data Converters Oversampling ADC Professor Y. Chiu. EECT 7327 . Fall 2014. The “black box” version of the quantization process. EECT 7327 . Fall 2014. Successive Approximation. (SA) ADC. Successive Approximation ADC. – . 2. –. Data Converters Successive Approximation ADC Professor Y. Chiu. EECT 7327 . Fall 2014. Binary search algorithm → N*. EECT 7327 . Fall 2014. DAC Architecture. DAC Architecture. – . 2. –. Data Converters DAC Professor Y. Chiu. EECT 7327 . Fall 2014. Nyquist DAC architectures. Binary-weighted DAC. Unit-element (thermometer-coded) DAC. EECT 7327 . Fall 2014. Algorithmic . (Cyclic) ADC. Algorithmic (Cyclic) ADC. – . 2. –. Data Converters Algorithmic ADC Professor Y. Chiu. EECT 7327 . Fall 2014. Input is sampled first, then circulates in the loop for N clock cycles. EECT 7327 Fall 2014. Sample-and-Hold (S/H) Basics. ZOH vs. Track-and-Hold (T/H). – . 2. –. Data Converters Sample-and-Hold Professor Y. Chiu. EECT 7327 Fall 2014. Zero acquisition time. Infinite bandwidth. Subranging. ADCs Professor Y. Chiu. EECT 7327 . Fall 2014. Subranging. ADC. Subranging. ADC Architecture. – . 2. –. Data Converters . Subranging. ADCs Professor Y. Chiu. EECT 7327 . Fall 2014. EECT 7327 . Fall 2014. Pipelined ADC. Pipelined ADC Architecture. – . 2. –. Data Converters Pipelined ADCs Professor Y. Chiu. EECT 7327 . Fall 2014. A bucket brigade of algorithmic ADC w/ concurrent operation of all stages. TUPO, June 10. th. , 2009. Katja Klein. 1. Physikalisches Institut B. RWTH Aachen University. Outline. Katja Klein . 2. Conversion ratio & output current. Dimensions and weight of buck converters. EECT 7327 . Fall 2014. CMOS Comparator. Comparator. – . 2. –. Data Converters Comparator Professor Y. Chiu. EECT 7327 . Fall 2014. Transfer characteristic. (ideal). Circuit symbol. Detects the polarity of the analog input signal and produces a digital output (1 or 0) accordingly – threshold-crossing detector.