LSI Computer Systems, Inc. (LSI/CSI)
Find the right IC for your next design
The first fabless Semiconductor Company offering Custom ASICs & Standard ICs in a variety of industries
Custom ASICs Revolutionary LED Drivers Cutting Edge Motor Controllers Differential Line Drivers Programmable Timers PIR Motion Detection Interface Circuits Programmable Digital Locks Frequency Dividers
Full Custom & Standard Integrated Circuits
As a fabless semiconductor company, we are in full control of design, development, and testing
Standard ICs
Our wide selection of standard products are trusted in several high volume and niche industries and come with the same high level of technical support provided for our Full Custom ICs.
Custom ASICs
LSI/CSI offers turnkey development of mixed signal, full custom ICs. An LSI/CSI full custom design results in the highest performance custom chip at the lowest possible price for a high volume application.
New Products
Check out our latest ICs
LS7466
24-BIT 2-Axes Programmable Quadrature Counter with Serial (SPI) Interface (16-Pins)
Incremental Encoder Interface, Counters
LS7466 is a monolithic CMOS 24-bit programmable counter. It consists of two identical functional modules to interface with X and Y axes encoders simultaneously. Each block consists of the following registers: MCR0, MCR1, IDR, ODR, CNTR, DSTR and SSTR. MCR0 and MCR1 controls the functional modes.
LS7866
32-Bit Quadrature Counter w/ I2C Interface (14-Pins)
Incremental Encoder Interface, Counters
LS7866 is a monolithic CMOS 32-bit counter, programmable to operate in 8-bit, 16-bit, 24-bit or 32-bit modular structures. Inputs are provided to interface directly with the quadrature clocks and the index markers from incremental encoders.
LS7641
Reverse Phase (Trailing-Edge) Light Dimmer For LED Lamps (14-Pins)
LED Drivers, Lighting Controls
LS7641 is a monolithic CMOS lamp dimmer IC designed for in line wall switch applications driving both LED and incandescent lamps. It uses Reverse Phase dimming technology wherein the brightness of a lamp is controlled by controlling the turn-off angle in ac half cycles using a FET.
LS9200
Dimmable LED Driver (8 Pins)
LED Drivers
LS9200 is a monolithic CMOS device for driving and dimming LED networks. The regulated constant current is maintained with an external sense resistor forming part of a feedback loop. The maximum LED load current is set by the sense resistor whose duty cycle can be modulated with a built in PWM circuit.
LS7190; LS7191; LS7192
Digital Potentiometers (14 Pins)
3-terminal digital potentiometer with two fixed terminals and a variable wiper terminal with 64 tap positions
The wiper tap position can be varied with any of the following available input signals: up/down clock or A/B quadrature clock or direct data transfer over SPI bus.
LS7193; LS7194
Digital Potentiometers (8 Pins)
3-terminal digital potentiometer with two fixed terminals and a variable wiper terminal with 64 tap positions
The wiper tap position can be varied with one of the following input signals: up/down clock or A/B quadrature clock.
Understanding Quadrature Counters with the LS7866
Discover the transformative power of the LS7866, a 32-bit quadrature counter from LSI/CSI, designed to elevate precision in systems requiring accurate position, speed, and direction tracking. In our latest blog post, we delve into the mechanics of quadrature counters and illustrate why the LS7866 stands out with its high-resolution capabilities, robust I2C interface, and versatile application across various industries including industrial automation and robotics.
Understanding Digital Potentiometers and the Excellence of the LS7190
Dive into the innovative world of digital potentiometers with our feature on the LS7190. This component exemplifies how digital precision enhances device functionality across various applications. Discover how this robust and versatile digital potentiometer can be integrated into your electronics projects, ensuring reliability and precision at every turn.
LSI/CSI Unveils LS7641: Revolutionary Light Dimmer Chip for Seamless LED and Incandescent Dimming
Meet the LS7641, a game-changing dimmer chip for LED and incandescent bulbs. With advanced features like reverse-phase dimming and adjustable angles, it offers unparalleled control and safety. Perfect for various settings, from homes to healthcare.
Introducing the LS7866: A Cutting-Edge 32-Bit Quadrature Counter with I2C Interface
LSI/CSI unveils LS7866, a cutting-edge 32-bit quadrature counter with an I2C interface, setting new standards in accuracy and reliability. Designed for industrial, automotive, and consumer electronics, this IC offers high-resolution counting, quadrature decoding, and seamless integration.
Our Brand New LS7190
Featured Product
Digital Potentiometer /Rheostat with Incremental Encoder and SPI Interface
GENERAL DESCRIPTION:
LS7190, LS7191, LS7192, LS7193, LS7194, and LS7195 are versions of a three-terminal digital potentiometer.
LS9100X Direct-AC LED Driver IC
The X010-10P0L-30 is a complete and thoroughly integrated evaluation board that features the LS9100X direct-AC LED driver.
The Archimedes Series is designed to be driven directly off the 120VAC line voltage, eliminating the standard power supply and extending the long-term life of the product. The high-power factor can provide enhanced energy savings to the end application.
The smaller form factor provides significant flexibility in creative fixture design and reduces development time. This all-inclusive solution provides impressive performance for distributed light source applications in conjunction with the quality of light.
This board will simplify your evaluation process and development time by providing you with a premium design ready for testing.
LS9100X – Only Integrated Circuit Chip to Achieve Excellent Sapphire Score in 2018
LSI/CSI’s LS9100X Direct-AC LED Driver IC earned a top score in the LEDsMagazine Sapphire Awards. As the sole IC component recognized, LS9100X stands out for its simplified design, reduced component count, and superior performance. With high power factor and exceptional efficacy, LS9100X redefines LED driver technology.
Cutting Edge Industrial Solutions
Our broad portfolio of technologies and products will make your next design a success
LED Drivers
Timers
Timers
Encoder Interface
Lighting Controls
Lighting Controls
Counters
Counters
PIR Detection
PIR Detection
LS7366R 32-bit CMOS Counter with SPI
LS7560F / LS7561F Brushless DC Motor Controller
50+ Years of Excellence
LSI/CSI is the world’s first fabless semiconductor company! The two founders, Alvin Kaplan and Attila Tetik, worked together at General Instrument Microelectronics and in 1969 they were assigned to develop three full custom CPU circuits for CDC in Minneapolis, MN.