ADN2830 Analog Devices, Inc., ADN2830 Datasheet
ADN2830
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ADN2830 Summary of contents
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... Analog Devices. Trademarks and registered trademarks are the property of their respective companies. GENERAL DESCRIPTION The ADN2830 provides closed-loop control of the average optical power of a continuous wave (CW) laser diode (LD) after initial factory setup. The control loop adjusts the laser IBIAS to maintain a constant back facet monitor photodiode (MPD) current and thus a constant laser optical power ...
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... ADN2830–SPECIFICATIONS Parameter LASER BIAS (BIAS) Output Current IBIAS Compliance Voltage IBIAS during ALS ALS Response Time MONITOR PD (IMPD) Current Input Voltage POWER SET INPUT (PSET) Capacitance Input Current Voltage ALARM SET (ASET) Allowable Resistance Range Voltage Hysteresis LOGIC INPUTS (ALS, MODE) ...
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... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADN2830 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
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... GND2 Supply Ground 31 IBIAS Laser Diode Bias Current Connect PIN CONFIGURATION GND2 27 14 GND1 ADN2830 13 NC IBIAS 28 TOP VIEW 12 V GND2 GND2 PIN 1 IBIAS 31 10 PAVCAP INDICATOR PAVCAP CONNECT PIN FUNCTION DESCRIPTIONS – ...
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... Figure 1. Laser Transfer Function CONTROL A monitor photodiode (MPD) is required to control the laser diode. The MPD current is fed into the ADN2830 to control the power, continuously adjusting the bias current in response to the laser’s changing threshold current and light to current (LI) slope (slope efficiency). ...
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... ADN2830 POWER CONSUMPTION The ADN2830 die temperature must be kept below 125°C. The exposed paddle should be connected in such a manner that the same potential as the ADN2830 ground pins. Power consumption can be calculated using the following formulas θ DIE AMBIENT = ...
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... MPD CONNECT CONNECT Figure 3. Test Circuit, Second ADN2830 Used in Parallel Current Boosting Mode to Achieve 400 mA Max IBIAS REV FAIL DEGRADE GND2 GND1 IBIAS NC ADN2830 GND2 GND2 IBIAS PAVCAP NC PAVCAP ...
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... EXTRA IBIAS (550 mA TOTAL) FROM AMP1, USE ANALOG DEVICES’ SSM2211 AMPLIFIER. AMP1 IS THE OPERATIONAL AMPLIFIER SHOWN IN THIS FIGURE. Figure 4. The ADN2830 Configured with Current Multiplier CURRENT GAIN = AD820 Figure 5. The ADN2830 Configured as Average Power Controller (Bias Current Sourced FAIL DEGRADE ...
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... CONNECT Figure 6. The ADN2830 Configured as a Controlled Current Source by Feeding Back the Bias Monitor Current to R REV FAIL DEGRADE GND2 GND1 IBIAS NC ADN2830 GND2 GND2 IBIAS PAVCAP NC PAVCAP –9– ADN2830 ...
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... ADN2830 PIN 1 INDICATOR 12 MAX 1.00 0.90 0.80 SEATING PLANE Revision History Location 6/03—Data Sheet changed from REV REV. A. Changes to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 OUTLINE DIMENSIONS 32-Lead Frame Chip Scale Package [LFCSP] (CP-32) Dimensions shown in millimeters 5.00 0.60 MAX BSC SQ 0.60 MAX 25 24 0.50 BSC 4.75 TOP BSC SQ VIEW 0 ...
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