Ion movement control system with low pass filter in analog switch

An apparatus comprising:

• a plurality of digital to analog converters (DACs), each DAC of the plurality of DACs having circuitry enabled to provide a respective DAC voltage according to a digital voltage signal from a DAC register;
• an electrode element comprising an electrode and a capacitor connected to a port, wherein the capacitor is connected between the port and a reference voltage, and wherein the electrode element configured to provide, according to a supplied DAC voltage, an electrical field for controlling movement of an ion;
• and
• a first filter switch having a first filter leg connected between a first DAC of the plurality of DACs and the electrode, wherein the first filter leg has a first filter leg switch in series with a first filter portion, wherein the first filter portion and the capacitor form a first filter between the first DAC and the electrode, wherein the first filter leg switch is configured to selectively couple the first DAC through the first filter leg to the electrode, wherein the first filter is configured to slow a voltage transient of the DAC voltage to provide a filtered first DAC voltage as the supplied DAC voltage to the electrode.

A method, comprising:

• providing a first digital to analog converter (DAC) voltage through a filter leg for a first time period to an electrode element of an ion position control element;
• providing, to the electrode element, for a second time period immediately after the first time period, the first DAC voltage through an unfiltered leg that is in parallel with the filter leg;
• and
• controlling movement of an ion through an electrical field provided at an electrode of the electrode element according to the first DAC voltage provided to the electrode element.