Glossary - alphabet order - "I"

I²C-BUS interface

This is a type of serial interface, originally proposed by Royal NXP semiconductors.



Infrared absorption glass

It is a glass that absorbs infra-red light (same as IR cut coating). IR cut coatings are a reflective type of filter with almost non thickness, while a IR absorption glass is an absorption type filter with thickness for controlling transmissivity. If IR cut coating is used in a CCD or CMOS device of a camera, problematic ghost images are generated by reflections. The infrared absorption glass avoids it.



Initial tolerance

This refers to initial deviation (Δf) between the actual frequency (measured value) and the rated value (f) at an ambient temperature of +25 ℃. This differential is expressed as a ratio (Δf/f).

Reference: Frequency tolerance



Insulation resistance

This is the resistance value between the leads and between the leads and the case.



Inverter

An inverter is a circuit element that outputs a signal whose high/low status is the reverse of the corresponding input signal. Inverters are used in crystal oscillation circuit to help generate crystal oscillation.

Reference: Crystal oscillation circuit





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