Calogic, LLC: Cross It, Crack It, Switch-Update It

Based in Fremont, California, Calogic LLC is a specialized design and manufacturing house of analog semiconductors. Established in 1983, Calogic is ROHS (Restriction of Hazardous Substances) compliant and ISO 9001:2008 certified to produce Bipolar Junction Isolated (JI) and Dielectrically Isolated (DI) products for the power management, telecommunications, computer, instrumentation, & medical markets.

Situated in the Silicon Valley, Calogic utilizes silicon gate technology to build the following discrete devices and switch arrays:

  • DMOS Switches: Engineered with Calogic’s patented high speed, low capacitance DMOS (double-diffusion metal-oxide semiconductor) process, the SD5000 Series features monolithic arrays of four bidirectional analog switches that operate with a maximum threshold of 2V. Calogic DMOS switches are perfect for simple TTL (transistor-transistor logic) and CMOS (complementary metal-oxide semiconductor) driving in small signal applications, such as audio routing, analog switching, and crosspoint switching.

  • JFET Switches: Designed to be cost-efficient, Calogic JFET (junction gate field-effect transistor) switches have low insertion loss, emit little noise, and come with an automated insertion package.

  • JFET Amplifiers: Designed using Calogic’s trademarked JFET (junction field-effect transistor) processing techniques, the SST404 Series of low noise, low leakage, monolithic semiconductors are surface mountable. With a very low noise output, Calogic’s JFET amplifiers are ideal for sensitive applications, such as precision instrumentation and medical purposes.

  • MOSFETs: Manufactured with a diode-protected gate and a high input impedance, Calogic’s MOSFETs (metal-oxide semiconductor field-effect transistor) are used to switch electronic signals.

  • Buffers: Ideal for line driving, radar, and sonar applications, the CLM6121 Series of high speed unity gain buffers takes up minimal bandwidth (100MHz) and continuously outputs a current of +/-200mA.

Via our proprietary website ASAP IT Technology, ASAP Semiconductor is a premier provider of Calogic, LLC parts. Prospective customers can browse our extensive stock of hard-to-find obsolete and current Calogic, LLC parts-ranging from amplifiers to low dropout voltage regulators to diodes and more-at If you are interested in a part, please feel free to contact our knowledgeable sales staff for a quote via or call toll-free at +1-714-705-4780.


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