A wireless sensor device comprising a voltage controlled oscillator (200, 500), the voltage controlled oscillator comprising: a resonator circuit (201, 501) comprising a switched capacitor bank operable to tune the resonator circuit, the switched capacitor bank comprising capacitor bank elements; a multiplexer communicatively coupled to the switched capacitor bank to select combinations of the capacitor bank elements based on input values representing digital capacitance levels, the input values comprising a first portion and a second portion, the multiplexer comprising: a first multi-bit input configured to receive a first set of values representing a first combination of the capacitor bank elements; a second multi-bit input configured to receive a second set of values representing a second, different combination of the capacitor bank elements; and a multi-bit output configured to communicate the first set of values or the second set of values to the switched capacitor bank to select either the first combination or the second combination; and control logic configured to generate the first set of values and the second set of values for each of the digital capacitance levels, the control logic comprising: a decoder configured to receive the second portion of the input values and generate the first set of values by decoding the second portion of the input values, and circuitry configured to receive the first set of values from the decoder and generate the second set of values by permuting the first set of values, wherein the switched capacitor bank comprises first capacitor bank elements (1104A-N) and second capacitor bank elements, and the multiplexer is communicatively coupled to the switched capacitor bank to select combinations of the second capacitor bank elements based on the second portion of the input values, and wherein each of the second capacitor bank elements has a substantially same nominal reactance, and each of the first capacitor bank elements (1104A-N) has a distinct nominal reactance. a resonator circuit (201, 501) comprising a switched capacitor bank operable to tune the resonator circuit, the switched capacitor bank comprising capacitor bank elements; a multiplexer communicatively coupled to the switched capacitor bank to select combinations of the capacitor bank elements based on input values representing digital capacitance levels, the input values comprising a first portion and a second portion, the multiplexer comprising: a first multi-bit input configured to receive a first set of values representing a first combination of the capacitor bank elements; a second multi-bit input configured to receive a second set of values representing a second, different combination of the capacitor bank elements; and a multi-bit output configured to communicate the first set of values or the second set of values to the switched capacitor bank to select either the first combination or the second combination; and a first multi-bit input configured to receive a first set of values representing a first combination of the capacitor bank elements; a second multi-bit input configured to receive a second set of values representing a second, different combination of the capacitor bank elements; and a multi-bit output configured to communicate the first set of values or the second set of values to the switched capacitor bank to select either the first combination or the second combination; and control logic configured to generate the first set of values and the second set of values for each of the digital capacitance levels, the control logic comprising: a decoder configured to receive the second portion of the input values and generate the first set of values by decoding the second portion of the input values, and circuitry configured to receive the first set of values from the decoder and generate the second set of values by permuting the first set of values, a decoder configured to receive the second portion of the input values and generate the first set of values by decoding the second portion of the input values, and circuitry configured to receive the first set of values from the decoder and generate the second set of values by permuting the first set of values, wherein the switched capacitor bank comprises first capacitor bank elements (1104A-N) and second capacitor bank elements, and the multiplexer is communicatively coupled to the switched capacitor bank to select combinations of the second capacitor bank elements based on the second portion of the input values, and (1104A-N) and second capacitor bank elements, and the multiplexer is communicatively coupled to the switched capacitor bank to select combinations of the second capacitor bank elements based on the second portion of the input values, and wherein each of the second capacitor bank elements has a substantially same nominal reactance, and each of the first capacitor bank elements (1104A-N) has a distinct nominal reactance.