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Silicon die of the first 555 chip (1971) Die of a CMOS NXP ICM7555 chip. The timer IC was designed in 1971 by Hans Camenzind under contract to Signetics. [3] In 1968, he was hired by Signetics to develop a phase-locked loop (PLL) IC. He designed an oscillator for PLLs such that the frequency did not depend on the power supply voltage or ...
Signetics Corporation was an American electronics manufacturer specifically established to make integrated circuits. [1] Founded in 1961, they went on to develop a number of early microprocessors and support chips, as well as the widely used 555 timer chip.
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Hans R. Camenzind (Swiss Standard German: [ˈkaːməntsɪnd]; 1 January 1934 – 8 August 2012 [1]) was an electronics engineer known for designing the 555 timer IC in 1971 under contract to Signetics. [2] He was the inventor on 20 US patents.
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Deutsch: Der NE555 enthält 24 Bipolartransistoren, zwei Dioden und 15 Widerstände, die zusammen sechs Funktionsblöcke bilden: Zwischen der Versorgungsspannung V CC (+) und der Masse GND(−) befindet sich ein Spannungsteiler aus drei identischen Widerständen, der, wenn nicht von außen beschaltet, die beiden Referenzspannungen ¹/ 3 V CC und ²/ 3 V CC liefert.
Research and industry in this specialty continues to grow and prosper. Some examples of long-lived and well-known analog chips are the 741 operational amplifier, and the 555 timer IC. Power supply chips are also considered to be analog chips. Their main purpose is to produce a well-regulated output voltage supply for other chips in the system.
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