A frequency to voltage converter device comprising: a first current source; a second current source operable independent of the first current source, wherein the first and second current sources are operable synchronously to generate separate independent output currents that remain substantially equal in magnitude, and wherein the first current source and the second current source are substantially identical current mirrors formed in a single substrate and are subject to substantially a same voltage and a same temperature, such that during operation, the electrical currents remain substantially equal in magnitude due to temperature variations and supply voltage variations having a substantially equal effect on the respective first and second current sources; and a converter circuit (120, 122, 124, 126) configured to receive an input signal having a frequency, the converter circuit (120, 122, 124, 126) operable to use the first and second current sources to generate an analog output signal having a voltage with a magnitude corresponding to the frequency; wherein the converter circuit (120, 122, 124, 126) includes: a charging circuit operable to charge and discharge a capacitor with the first current source in response to the frequency of the input signal; a low pass filter operable to provide a filtered voltage representative of an average of the charged state of the capacitor; a reference circuit configured to generate a reference voltage with the second current source, wherein the reference circuit includes a resistor to which the second current source is applied to generate the reference voltage; and a difference comparator operable to generate the analog output signal based on comparison of the filtered voltage to the reference voltage, wherein the analog output signal represents an indication of a degree of difference between the reference voltage and the filtered voltage. a first current source; a second current source operable independent of the first current source, wherein the first and second current sources are operable synchronously to generate separate independent output currents that remain substantially equal in magnitude, and wherein the first current source and the second current source are substantially identical current mirrors formed in a single substrate and are subject to substantially a same voltage and a same temperature, such that during operation, the electrical currents remain substantially equal in magnitude due to temperature variations and supply voltage variations having a substantially equal effect on the respective first and second current sources; and a converter circuit (120, 122, 124, 126) configured to receive an input signal having a frequency, the converter circuit (120, 122, 124, 126) operable to use the first and second current sources to generate an analog output signal having a voltage with a magnitude corresponding to the frequency; wherein the converter circuit (120, 122, 124, 126) includes: a charging circuit operable to charge and discharge a capacitor with the first current source in response to the frequency of the input signal; a low pass filter operable to provide a filtered voltage representative of an average of the charged state of the capacitor; a reference circuit configured to generate a reference voltage with the second current source, wherein the reference circuit includes a resistor to which the second current source is applied to generate the reference voltage; and a difference comparator operable to generate the analog output signal based on comparison of the filtered voltage to the reference voltage, wherein the analog output signal represents an indication of a degree of difference between the reference voltage and the filtered voltage. a charging circuit operable to charge and discharge a capacitor with the first current source in response to the frequency of the input signal; a low pass filter operable to provide a filtered voltage representative of an average of the charged state of the capacitor; a reference circuit configured to generate a reference voltage with the second current source, wherein the reference circuit includes a resistor to which the second current source is applied to generate the reference voltage; and a difference comparator operable to generate the analog output signal based on comparison of the filtered voltage to the reference voltage, wherein the analog output signal represents an indication of a degree of difference between the reference voltage and the filtered voltage.