Glossary - alphabet order - "D"
Deterministic Jitter
A type of jitter defined in specification. See "jitter".
Reference: Jitter
Divider Dividing circuit
This circuit is used to generate a low-frequency clock from a reference clock frequency. The division rate is usually 1/n (where n is an integer).
Drain resistor
This is an element in a crystal oscillation circuit. See "crystal oscillation circuit".
Reference: Crystal oscillation circuit
Drive level (Level of drive)
This refers to the power or oscillation output level required to operate (drive) a crystal unit. The drive level is expressed by the following formula. Drive level P = I2 × Re Where I is the current flowing to the crystal unit, Re is the crystal unit's effective resistance, and Re = R1 × (1+ C0/CL) (CL: load capacitance)
Crystal oscillation circuit | Equivalent circuit of crystal unit |
DTCXO (Digital Temperature Compensated X'tal(crystal) Oscillator)
DTCXO stands for Digital Temperature Compensated X'tal(crystal) Oscillator, and is a oscillator with digitally temperature compencated circuit such as EPSON's high accuracy RTC.