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MAX3667 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3667 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page ________________General Description The MAX3667 is a complete, +3.3V laser driver with automatic power control (APC), designed for SDH/ SONET applications up to 622Mbps. It accepts differ- ential PECL inputs, provides single-ended bias and modulation currents, and operates over a -40°C to +85°C temperature range. A temperature-stabilized reference voltage simplifies laser current programming. It allows external program- ming of the modulation current between 5mAp-p and 60mAp-p, and of the bias current between 5mA and 90mA. The APC function, which incorporates a monitor photo- diode, an external resistor, and two external capacitors, maintains constant laser output power. Two current monitors provide high-speed signals that are directly proportional to the bias and modulation currents. Additional features include disable/enable control and a slow-start feature with a minimum turn-on time of 50ns. The MAX3667 is available in die form and in a 32-pin TQFP package. ________________________Applications 622Mbps SDH/SONET Access Nodes Laser Driver Transmitters Section Repeaters ____________________________Features o Single +3.3V or +5.0V Operation o Automatic Average Power Control o Bias Current and Modulation Current Monitor Outputs o TTL-Compatible Disable Input o Temperature-Compensated Reference o PECL-Compatible Data Inputs +3.3V, 622Mbps SDH/SONET Laser Driver with Automatic Power Control ________________________________________________________________ Maxim Integrated Products 1 MAX3667 MAX3691 130 Ω 130 Ω 50 Ω 82 Ω 82 Ω PECL 1 µF DISABLE COMP CCOMP BIASMON MODMON APCSET MD MONITOR DIODE +3.3V LASER DIODE IMOD RFILT 22 Ω RDAMP 4.7 Ω 100 Ω 470nH 4:1 SERIALIZER WITH CLOCK GEN 1 µF 0.01 µF 0.1 µF 0.1 µF IBIAS MODSET GND IN+ IN- BIASSET APC CAPC 1nF VCC +3.3V ____________________________________________________Typical Operating Circuit 19-1311; Rev 1; 3/98 PART MAX3667ECJ MAX3667E/D -40°C to +85°C -40°C to +85°C TEMP. RANGE PIN-PACKAGE 32 TQFP Dice* EVALUATION KIT AVAILABLE _______________Ordering Information Pin Configuration appears at end of data sheet. * Dice are designed to operate from -40°C to +85°C but are tested and guaranteed only at Tj = +25°C. For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. |
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