The Integrated Systems Laboratory (Laboratorio de Sistemas Integrados, LSI) is a group at the Technical University of Madrid (Universidad Politécnica de Madrid, UPM), located at Ciudad Universitaria Campus in Madrid, Spain

The LSI takes part in the Information Processing and Telecommunications Center (IPTC) and the Center for Computational Simulation (CCS), which are relevant research centers linked to UPM, and also in the Department of Electronic Engineering of the Higher Technical School of Telecommunication Engineers (Escuela Técnica Superior de Ingenieros de Telecomunicación, ETSIT).

The LSI was created in 1983 with the mission of carrying out R&D, innovation and teaching activities in the area of integrated digital electronic systems, covering the main abstraction levels in the design of these systems: Application-specific integrated circuits (ASICs), advanced IP cores for ASICs and field-programmable gate arrays (FPGAs), digital architectures and a wide range of applications that use them.

The main research areas targeted by the group are variations-aware and low-power VLSI design, digital architectures for high-performance computing and communications, hardware acceleration, system level design automation, fast Fourier transform and DSP architectures, neuromorphic computing, IoT and energy optimization of datacenters.

The LSI is in charge of teaching multiple university courses on electronics for various Bachelor and Master degrees:  Grado en Ingeniería de Tecnologías y Servicios de Telecomunicación (GITST), Grado en Ingeniería Biomédica (GIB), Máster Universitario en Ingeniería de Telecomunicación (MUIT), and Máster Universitario en Ingeniería de Sistemas Electrónicos (MUISE). It also participates actively in the Doctoral Programme on Electronic System Engineering of the International Doctoral School at UPM.

The LSI members have participated in numerous national, European and international projects, both competitive and contracts with companies, and also generated an extensive list of national and international publications, as well as multiple patents.