Enhanced differential voltage-to-frequency converter for telemetry applications

This paper presents an enhanced differential voltage-to-Frequency (dVFC) suitable for telemetry applications. The realization method employs op-amps in conjunction with current conveyors and Set-Reset latch. The converter gain can be easily adjusted through the variation of a single resistor. Compared to the previous dVFC using only current conveyors and Set-Reset latch, the proposed converter offers significant improvements in accuracy and circuit configuration. Its benefits are higher accuracy, simpler structure, fewer components, and lower costs. Experimental results verifying performances of the proposed dVFC are closely agreed with expected values.