The ADL5310 employs an optimized translinear structure, which utilizes the accurate logarithmic relationship between bipolar transistor's base-emitter voltage and collector current, with appropriate scaling by precision currents to compensate the inherent temperature dependence. Input and reference current pins sink current ranging from 3nA to 3mA (limited to ±60 dB between input and reference) into fixed voltage defined by the VSUM potential, which is internally set to 500mV but may be externally-grounded for dual-supply operation and additional applications requiring voltage inputs.