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MAX3667 Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX3667 Datasheet(HTML) 5 Page - Maxim Integrated Products |
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+3.3V, 622Mbps SDH/SONET Laser Driver with Automatic Power Control _______________________________________________________________________________________ 5 10 1k 100 100k 10k 100G 10G 1G 1pF 100pF 10nF 1 µF 100 µF APC BANDWIDTH vs. CCOMP (VARYING MONITOR-TO-LASER CURRENT GAIN) CCOMP MEASURED RESULTS GAIN = 90 GAIN = 30 GAIN = 60 SIMULATED RESULTS ____________________________Typical Operating Characteristics (continued) (TA = +25°C, VCC = +3.3V, unless otherwise noted.) 80 100 90 120 110 130 160 140 150 -40 -15 10 35 60 85 SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE (°C) EXCLUDING IBIAS RMODSET = RBIASSET = 2kΩ 10 Ω LOAD VCC = +5.0V VCC = +3.3V ______________________________________________________________Pin Description NAME FUNCTION 1, 2, 23, 24 VCC Supply Voltage Input 3, 6, 8, 13, 14, 15, 18, 20, 22 GND Ground PIN 4 IN+ Positive PECL-Compatible Input 5 IN- Negative PECL-Compatible Input 11 APC Feedback Current for Closed-Loop Laser-Diode Bias Control 10 MODSET Adjustment for Laser-Diode Modulation Current 9, 26, 28, 31 N.C. No Connection 7 DISABLE Disable Input. High = disable, TTL-compatible input. 25 MD Input for PIN Monitor Diode Current 19, 21 IMOD Laser-Diode Modulation Current 17 PULLUP VCC Supply for Internal 31Ω Pull-Up Resistor 16 IBIAS Laser-Diode DC Bias Current 12 BIASSET Open-Loop Adjustment for Laser-Diode Bias Current 32 COMP External Compensation Capacitor for Closed-Loop Laser-Diode Bias Current Control Stability 30 MODMON IMOD Current Monitor (gain = 1/33 IQMOD). Open PNP collector, connect to ground if not used. 29 BIASMON IBIAS Current Monitor (gain = 1/38 IBIAS). Open PNP collector, connect to ground if not used. 27 APCSET Closed-Loop Adjustment for Laser-Diode Bias Current |
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