Description
ELM440 60Hz Generator .
The ELM440 is an 8 pin digital divider integrated circuit, that provides both 60Hz and 1Hz outputs from a common 3.
Features
* Low power CMOS design
* Wide supply range - 3.0 to 5.5 volt operation
* Generates both 60Hz and 1Hz references
* Automatically synchronizes to the line frequency for long term stability, when it’s available
* Uses a standard 3.58MHz crystal for the time refe
Applications
* Stable 60Hz and 1Hz reference sources
* Master oscillator for clock / timekeeping functions
* DC powered backup 60Hz reference signal
Block Diagram
sync
5 7
60Hz
Master Oscillator XT1 XT2
2
Divider
÷ 60
6
1Hz
VDD
3 4
reset
ELM440DSB
Elm Electronics
* Ci
