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## ADN2531ACPZ-WP Datasheet(PDF) 17 Page - Analog Devices

 Part No. ADN2531ACPZ-WP Description 11.3 Gbps, Active Back-Termination, Differential Laser Diode Driver Download 20 Pages Scroll/Zoom 100% Maker AD [Analog Devices] Homepage http://www.analog.com Logo

## ADN2531ACPZ-WP Datasheet(HTML) 17 Page - Analog Devices

 17 / 20 page ADN2531Rev. 0 | Page 17 of 20e actual resistance of the TOSAThe value of K depends on thThis example assumes that the nominal value of IBIAS is 40 mAand can be obtained from Figure 35. For a TOSA resistance of12 Ω, the typical value of K is 110 mA/V. Assuming that IMOD =40 mA and using the preceding equation, the MSET voltage isgiven byand that the IBIAS range for all operating conditions is 10 mA to80 mA. The accuracy of the IBIAS to IBMON ratio is given in Tabland is plotted in Fig1e 1eht ct accuracy ismum IBIAS of 10 mA and ±3.0% for themaxentage ofBIASis given byure 4 .41, t e IBMON outpu urrenReferring to Figur±4.3% for the miniV36.011040mA/V110(mA)=== MODMSETIVThe MSET voltage range can be calculated using the requiredIMOD range and the minimimum IBIAS value of 80 mA.The accuracy of the IBMON output current as a percthe nominal Ium and maximum K values. Thesevalues can be obtained from the minimum and maximumcurves in Figure 35.IBIAS Monitor Accuracy Calculations456%075.1mA401001003.4mA10_±=×=MINAccuracyIBMONfor the minimum IBIAS value, and by0020%0.6mA401001000.3mA80_±=×=MAXAccuracyIBMON123100806040IBIAS (mA)Figure 41. Accuracy of IBIAS to IBMON Ratiofor the maximum IBIAS value. This gives a worse-case accuracyfor the IBMON output current of ±6.0% of the nominal IBIASvalue over all operating conditions. The IBMON output curraccuracy numbers can bente combined with the accuracy numbersfor tnd any other errorcvoltage.he 750 Ω IBMON resistor (RIBMON) asources to cal ulate an overall accuracy for the IBMON

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