| 摘要 |
In an offset control circuit, a voltage/current converting portion generates differential current (I+ and I-) that are proportional to a potential difference between differential input voltage signals (VIN+ and VIN-), and an offset adjusting current-generating portion generates offset adjusting currents (Iofs+ and Iofs-). In a current/voltage converting portion, a current (Ir) that is proportional to a potential difference between differential terminals flows through. Differential current output terminals, offset adjusting current-output terminals and the differential terminals are connected. The offset components contained in the differential input voltage signals (VIN+ and VIN-) are adjusted with the offset adjusting currents (Iofs+ and Iofs-), and differential output voltage signals (VO+ and VO-) in which the offset components are added to the differential input voltage signals (VIN+ and VIN-) are generated.
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