许多单电源装置都需要使用工作在5V或低于5V的单电源精密放大器。虽然许多精密的单电源运放现在都做成含有2个或3个放大器的仪表放大器(IA),但在设计时需要仔细考虑其性能指标,以便获得所需的精确度和精密度。还有,虽然单电源的仪表放大器的集成由路芯片已可市购,但这些芯片通常要牺牲一点其交、直流性能,才能使它们在较低的电源电压和电流下较好地工作。所以,双电源IA仍不失为一种最佳的选择。在单电源装置中实现高精密的性能是切实可行的,因为大多数传感器 Many single-supply devices require single-supply precision amplifiers that operate at 5V or below. Although many precision single-supply op amps are now made as in-amps (IA) with two or three amplifiers, their design specifications require careful consideration of their performance specifications in order to achieve the accuracy and precision required. Also, while integrated single-supply in-amps are commercially available, these chips typically sacrifice their DC / DC performance for better operation at lower supply voltages and currents. Therefore, the dual power IA is still the best choice. It is practicable to achieve high-precision performance in a single power supply because most sensors