Resistor trimmingManufacturing variationVoltage referenceIt is expensive if not impossible to fabricate embedded resistors to the correct resistance value. Therefore, embedded resistor is often fabricated with a typical value and then use a post-fabrication trimming process to trim it to the desired ...
Resistor ratio, R1/R2 Transistors emitter-area ratio, N Base-emitter voltage at 25°C, Vber, in volts Process-dependent parameter, η Magic temperature, T0, in °C Curvature-correction select, CCFigure 2. The Bandgap Reference Calculator initial screen display.The user's guide (available as ...
Offset voltage on the Y input shows up as feedthrough from the X input. Offset voltage on the Z input causes offset in the output signal, and resistor mismatch causes gain error. In early Gilbert Cell multipliers, these errors had to be trimmed by means of resistors and potentiometers ...
Absolute value laser wafer trimming allows the user to program gain accurately with this single resistor. The absolute accuracy and temperature coefficient of this resistor directly affects the in- amp gain accuracy and drift. Since the external resistor will never exactly match the internal thin ...
The thin-film resistor trimming process adds cost, and the thin-film resistor values may be affected when subjected to the mechanical stresses of packaging. For these reasons, switched capacitor (or charge-redistribution) DACs have become popular in newer SAR ADCs. The advantage of the switched ...
If a series of these base-emitter junctions are arranged in parallel with a string of resistors, zapping selected junctions will short out portions of the resistor string, thereby adjusting the total resistance value. It is possible to perform zener zap trimming in the packaged IC to compensate ...
Resistor ratio, R1/R2 Transistors emitter-area ratio, N Base-emitter voltage at 25°C, Vber, in volts Process-dependent parameter, η Magic temperature, T0, in °C Curvature-correction select, CC Figure 2. The Bandgap Reference Calculator initial screen display. ...
If a series of these base-emitter junctions are arranged in parallel with a string of resistors, zapping selected junctions will short out portions of the resistor string, thereby adjusting the total resistance value. It is possible to perform zener zap trimming in the packaged IC to compensate ...