SEMICONDUCTOR INTEGRATED CIRCUIT AND RADIO COMMUNICATION TERMINAL HAVING THE SAME

摘要: PROBLEM TO BE SOLVED: To provide an inverting amplification circuit that outputs a high precision result.SOLUTION: According to embodiment, 1 includes: operational amplifier OPA for amplifying differential voltage between input supplied terminal and reference non-inverting output amplified signal; feedback resistor RFBT negatively feeding the signal back of OPA; variable section PVIC1 setting current path with first resistance value depending on control external INT OPA, bypass second node GND voltage.