Course

Unit 1:

Sampling Theory – Spectral Properties of Sampled Signals – Oversampling -. Time Interleaved Sampling – Ping-Pong Sampling System – Analysis of Offset and Gain Errors – Discrete Time Signals – Sample and Hold Circuits: Top and Bottom Plate Sampling- Characterizing Sample and Hold – Choice of Input Frequency. Anti-Alias Filter Design:

Integrator-Based Filter – The gm-C Filter – Discrete Time Integrators – Filtering Topologies – Filters Using Noise Shaping. Verilog-A Modeling of Filters.

Unit 2:

Switched Capacitor Circuits: Capacitors – Switches – Non-Overlapping Clocks – Resistor Equivalence – Parasitic Sensitive Integrator – Parasitic – Insensitive Integrators – Parasitic Insensitive Switched Capacitor Amplifiers – Non-Idealities – Finite Gain – DC Offset – Gain Bandwidth Product – Fully Differential Switched Capacitor Circuits – Noise – Applications of Switched Capacitor Circuits. Overview of sigma-delta ADC. Verilog-A Modeling of Switched Capacitor Circuits.

Unit 3:

Basic Phase-Locked Loop (PLL) Architecture: Voltage Controlled Oscillator (VCO) – Analog Phase Detector – Digital Phase Detector – Loop Filer – Dynamics of Simple PLL – Charge-Pump PLL – Dynamics of Charge-Pump PLL – Nonideal Effects in PLL – Jitter and Phase Noise – Overview of PLL Applications– Clock Generation – Jitter Reduction. RC Phase Shift – LC Oscillators – Negative-gm Oscillators. Verilog-A Modeling: VCO – Phase Detectors – Loop Filters –Simple PLL – Charge-pump PLL.

Course Objectives

• To introduce the concepts of mixed signal VLSI circuits
• To enhance design thinking capability by inculcating the importance of parameters like non-linearity, mismatches, noise and jitter in mixed signal circuit design
• To enrich the skills of computations by providing practical design problems and to make them solve using modern engineering tools involving nanometer CMOS technology

Course Outcomes
At the end of the course, the student should be able to

• CO1: Ability to apply the concepts of mixed signal processing and to understand the working of mixed signal circuits
• CO2: Ability to apply amplifier basics to design integrators, filters and switched capacitance circuits
• CO3: Ability to analyze non-linearity, mismatches, noise and jitters in mixed signal circuits
• CO4: Ability to analyze mixed signal designs from top-level specifications and to model circuits using Verilog-AMS

Skills Acquired: To become skilled in designing CMOS-based mixed signal functional blocks and to expertise in using high-level descriptive languages

CO-PO Mapping:

1. Jacob Baker, CMOS Mixed Signal Circuit Design, Wiley India Pvt. Ltd, 2008.
2. Razavi, Design of Analog CMOS Integrated Circuits, Tata McGraw Hill, 2002, Reprint 2015.
3. Gregorian and G.C.Temes, Analog MOS Integrated Circuits for Signal Processing, John Wiley and Sons, 2004.
4. David Johns and Ken Martin, Analog Integrated Circuit Design, Wiley India Pvt. Ltd, 2008.
5. Kenneth S. Kundart and Olaf Zinke, The Designer’s Guide to Verilog- AMS, Springer,
6. Haykin, Simon, and Barry Van Veen. Signals and systems. John Wiley & Sons, 2007.
7. A Sedra, K. C. Smith and A. N. Chandorkar, Microelectronic Circuits -Theory and Applications, Seventh Edition, Oxford University Press, 2017.