VCC6
Vectron International
Typical results for the VCC6, with a 156.250MHz output, series are shown in Table 1
Application NoteMicrochip
Reducing Power Consumption on LVPECL XOs and VCXOs
This application note describes a method to reduce power consumption in LVPECL oscillators by using a single resistor termination scheme instead of pull-up/pull-down networks.
Overview
This technical document from Microchip (originally Vectron International) outlines a simplified termination method to minimize power consumption in LVPECL crystal oscillators (XOs) and voltage-controlled crystal oscillators (VCXOs). By replacing standard 130/82 ohm pull-up/pull-down termination with a single resistor to ground, current draw can be significantly reduced. The note provides measured data for the VCC6 series at 156.250 MHz, showing a reduction from 77mA in standard configurations to 49mA using a 240 ohm resistor. It further analyzes the impacts of higher resistance values on signal integrity and peak-to-peak output voltage for short-distance FR4 trace applications.
Use Cases
- Low-power clock distribution design
- LVPECL termination optimization
- Reducing current draw in high-speed oscillator circuits
- Short-distance signal routing on FR4 traces
Topics
LVPECL
XO
VCXO
VCC6
power consumption
termination scheme
crystal oscillator
signal integrity
Vectron International
Referenced Parts
| VCC6 | Vectron International | Typical results for the VCC6, with a 156.250MHz output, series are shown in Table 1 |