DC Parameters: Input Offset Voltage (V - TI.com
Application ReportSLOA059 March 20011DC Parameters: Input Offset Voltage (VIO)Richard PalmerAdvanced Analog ProductsABSTRACTThe Input Offset Voltage , VIO, is a common dc parameter in operational amplifier (op amp)specifications. This report aims to familiarize the engineer by discussing the basics andmodern aspects of VIOby providing a definition and a detailed explanation of causes ofVIOfor BJT, BiFET, and CMOS devices. Discussion centers around measurementtechniques, data sheet specifications, and the effect of VIOon circuit design and the trimmethods to correct Offset Voltage Temperature Drift in the Major Device Types ........................................ ........................ CMOS ........................................ ........................................ ........................................ .............85Manufacturer Measurement, Trim, and Specification of Measurement.
Figure 14. Block Diagram of Channel One of the TLC4502.....20 Figure 15. Typical Null Configuration of an Amplifier.....21 Figure 16. VIO Adjustment With (a) Potentiometer and (b) Low Temperature Coefficient
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