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