| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an amplification circuit that reduces a charge injection charging error.SOLUTION: In an amplification circuit 100 that includes a main amplification circuit 10 and an auto-zero amplification circuit 11 and performs an offset correction to the main amplification circuit 10, the main amplification circuit 10 comprises a four-input differential amplification circuit having a non-inverting input terminal (+) for inputting an analog signal (VIN+), an inverting input terminal (-) for inputting an analog signal (VIN-), a non-inverting input terminal for offset correction (Z+) for inputting a non-inverted output from a non-inverting output terminal (E+) of the auto-zero amplification circuit 11, and an inverting input terminal for offset correction (Z-) for inputting an inverted output from an inverting output terminal (E-) of the auto-zero amplification circuit 11.</p> |
