CT20601 is an ultra-low stand-by current time and voltage reference.
With only one external capacitor of 1uF, the CT20601 generates a precise voltage reference of 1,21V and a clock of 128Hz.
The Voltage Reference is based on a silicon proven CT20106 band-gap IP block that, by means of the coupled oscillator, is switched Ã‚on/off with a certain duty-cycle thatÃ¢â‚¬â„¢s dependent on the maximum ripple sustainable by the application. 3 trimming bits are needed in order to minimise the temperature drift.
The Oscillator has an internal high-ohmicÃ‚calibrated resistors that allows the clock frequency to remain within an accuracy of 1% with a total temperature drift of 300pmm.
The Supply voltage can be as low as 1.6V.