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ADN2872 Datasheet(PDF) 6 Page - Analog Devices |
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ADN2872 Datasheet(HTML) 6 Page - Analog Devices |
6 / 20 page ADN2872 Rev. 0 | Page 6 of 20 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 19 24 18 1 12 7 13 6 FAIL IBMON ERREF IMMON ERSET VCC CCBIAS PAVSET VCC PAVREF RPAV GND ADN2872 TOP VIEW (Not to Scale) NOTES 1. THE LFCSP PACKAGE HAS AN EXPOSED PADDLE THAT MUST BE CONNECTED TO GROUND. Figure 5. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 CCBIAS Control Output Current. 2 PAVSET Average Optical Power Set Pin. 3 GND Supply Ground. 4 VCC Supply Voltage. 5 PAVREF Reference Voltage Input for Average Optical Power Control. 6 RPAV Average Power Resistor when Using PAVREF. 7 ERCAP Extinction Ratio Loop Capacitor. 8 PAVCAP Average Power Loop Capacitor. 9 GND Supply Ground. 10 DATAP Data, Positive Differential Input. 11 DATAN Data, Negative Differential Input. 12 ALS Automatic Laser Shutdown. 13 ERSET Extinction Ratio Set Pin. 14 IMMON Modulation Current Monitor Current Source. 15 ERREF Reference Voltage Input for Extinction Ratio Control. 16 VCC Supply Voltage. 17 IBMON Bias Current Monitor Current Source. 18 FAIL FAIL Alarm Output. 19 GND Supply Ground. 20 VCC Supply Voltage. 21 IMODP Modulation Current Positive Output (Current Sink), Connect to Laser Diode. 22 IMODN Modulation Current Negative Output (Current Sink). 23 GND Supply Ground. 24 IBIAS Laser Diode Bias (Current Sink to Ground). 25 (EPAD) Exposed Paddle (EPAD) The LFCSP package has an exposed paddle that must be connected to ground. |
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