| 摘要 |
Externally input voltages IN(-) and IN(+) are input to the input terminal of a differential amplifier unit (1) not directly, but after being shifted by voltage shift units (2, 3). The input voltages IN(-) and IN(+) are decreased by alpha when they are at high level, and by beta when they are at low level. In this case, alpha>beta. The voltage difference of the external input voltage IN between high and low levels is relatively reduced, and then the external input voltage IN is input to the differential amplifier unit (1). This widens the substantial in-phase input voltage range in the differential amplifier unit (1).
|
