A Digitally Programmable Analog Quadrature Sine Oscillator for on-chip Lock-In Measurement Systems
Alejandro Márquez, Nicolás J. Medrano, B. Calvo, Pedro A. Martínez · Jornadas de jóvenes investigadores del I3A · 1970
This paper presents a CMOS 1.8V-180nm analog quadrature sine oscillator. Thanks to a custom 12-bit bidirectional DAC-based architecture, the frequency can be digitally programmed over two decades with high accuracy, making it suitable as the actuation system in low-cost high-performance embedded lock-in measurement systems.