Method And System For Charge Compenssation For Switched Capacitor Circuits

摘要

Methods and systems for charge compensation for switched-capacitor circuits may comprise, in an electronics device comprising a first voltage source, a switched capacitor load, and a switched capacitor compensation circuit: switching a capacitor in the switched capacitor load from a first voltage to a second voltage; providing a charge to the switched capacitor load from the switched capacitor compensation circuit without requiring added charge from the first voltage source. A reference voltage may be generated utilizing the first voltage source. A replica reference voltage for the switched capacitor compensation circuit may be generated utilizing a second voltage source. The replica reference voltage may be equal to the reference voltage. The replica reference voltage may be equal to a supply voltage, VDD, for circuitry in the electronics device. Capacitors may couple outputs of the first and second voltage sources to ground.

主权项

1. A method for communication, the method comprising:
in an electronics device comprising a first voltage source, a capacitive load, and a compensation circuit, where an output of the first voltage source and an output of the compensation circuit are both coupled to a first node through which current is coupled to the capacitive load:
switching a capacitor in the capacitive load from a first voltage to a second voltage; andproviding charge to the capacitive load from the compensation circuit via the first node without requiring added charge from the first voltage source, wherein a first capacitor couples an output of the first voltage source to ground.