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TL432A-Q1 Datasheet(PDF) 5 Page - Texas Instruments |
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TL432A-Q1 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 24 page Deviation Parameters The deviation parameters Vref(dev) and Iref(dev) are defined as the differences between the maximum and minimum values obtained over the recommended temperature range. The average full-range temperature coefficient of the reference voltage, αVref, is defined as: where: ∆TA is the recommended operating free-air temperature range of the device. can be positive or negative, depending on whether minimum Vref or maximum Vref, respectively, occurs at the lower temperature. Example: Vref = 2495 mV at 25°C, VI(dev) = 14 mV, ∆TA = 165°C for TL432B Because minimum Vref occurs at the lower temperature, the coefficient is positive. Dynamic Impedance The dynamic impedance is defined as: When the device is operating with two external resistors (see Figure 3), the total dynamic impedance of the circuit is given by: Maximum Vref Minimum Vref ∆TA VI(dev) a V ref ppm °C + V I(dev) V ref at 25 °C 106 D T A a V ref + 14 mV 2495 mV 106 165 °C [ 34 ppm °C |z KA| + D V KA D I KA |z | + D V D I [ |z KA| 1 ) R1 R2 a V ref TL432A-Q1 TL432B-Q1 www.ti.com SLVS900A – NOVEMBER 2008 – REVISED JULY 2012 Figure 1. Calculating Deviation Parameters and Dynamic Impedance Copyright © 2008–2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): TL432A-Q1 TL432B-Q1 |
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Similar Description - TL432A-Q1_16 |
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