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Package Cooled:MAX D/C:QFP
Part Number: MAX3261
Package Cooled: MAX
D/C: QFP
Description: The MAX3261 is a complete, easy-to-program, single +5V-powered, 1.25Gbps laser diode driver with compl...
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MAX3261
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DataSheet
General Description
MAX3261 General Description
The MAX3261 is a complete, easy-to-program, single +5V-powered, 1.25Gbps laser diode driver with complementary enable inputs and automatic power control (APC). The MAX3261 accepts differential PECL inputs and provides complementary output currents. A temperature- stabilized reference voltage is provided to simplify laser current programming. This allows modulation current to be programmed up to 30mA and bias current to be programmed up to 60mA with two external resistors.
Complementary enable inputs allow the MAX3261 to interface with open-fiber-control architecture-a feature not found in other 1.25Gbps laser diode drivers.
An APC circuit is provided to maintain constant laser power in transmitters that use a monitor photodiode. Only two external components are required to implement the APC function.
The MAX3261's fully integrated feature set includes a TTL-compatible laser failure indicator and a programmable slow-start circuit to prevent laser damage. The slow-start is preset to 50ns and can be extended by adding an external capacitor.
MAX3261 Maximum Ratings
Terminal Voltage (with respect to GND)
Supply Voltages (VCCA, VCCB).................................-0.3V to 6V
VIN+, VIN-, FAILOUT................................................0V to VCC_
OUT+, OUT-, IBIASOUT ........................................1.5V to VCC_
ENB+, ENB- ........................VCC_ or 5.5V, whichever is smaller
Differential Input Voltage (|VIN+ - VIN-|) ..........................3.8V
Input Current
IBIASOUT.............................................................0mA to 75mA
OUT+, OUT- .........................................................0mA to 40mA
IBIASSET ........................................................0mA to 1.875mA
IMODSET................................................................0mA to 2mA
IPIN, IPINSET, OSADJ.............................................0mA to 2mA
FAILOUT...............................................................0mA to 10mA
IBIASFB.................................................................-2mA to 2mA
Output Current
VREF1, VREF2........................................................0mA to 20mA
SLWSTRT ................................................................0mA to 5mA
Continuous Power Dissipation (TA = +70°C)
TQFP (derate 10.2mW/°C above +70°C).....................816mW
Operating Temperature Ranges
MAX3261CCJ ......................................................0°C to +70°C
MAX3261ECJ ...................................................-40°C to +85°C
Junction Temperature....................................................+150°C
Storage Temperature Range .........................-55°C to +175°C
Processing Temperature (die) .......................................+400°C
Supply Voltages (VCCA, VCCB).................................-0.3V to 6V
VIN+, VIN-, FAILOUT................................................0V to VCC_
OUT+, OUT-, IBIASOUT ........................................1.5V to VCC_
ENB+, ENB- ........................VCC_ or 5.5V, whichever is smaller
Differential Input Voltage (|VIN+ - VIN-|) ..........................3.8V
Input Current
IBIASOUT.............................................................0mA to 75mA
OUT+, OUT- .........................................................0mA to 40mA
IBIASSET ........................................................0mA to 1.875mA
IMODSET................................................................0mA to 2mA
IPIN, IPINSET, OSADJ.............................................0mA to 2mA
FAILOUT...............................................................0mA to 10mA
IBIASFB.................................................................-2mA to 2mA
Output Current
VREF1, VREF2........................................................0mA to 20mA
SLWSTRT ................................................................0mA to 5mA
Continuous Power Dissipation (TA = +70°C)
TQFP (derate 10.2mW/°C above +70°C).....................816mW
Operating Temperature Ranges
MAX3261CCJ ......................................................0°C to +70°C
MAX3261ECJ ...................................................-40°C to +85°C
Junction Temperature....................................................+150°C
Storage Temperature Range .........................-55°C to +175°C
Processing Temperature (die) .......................................+400°C
MAX3261 Features
* Rise Times Less than 250ps
* Differential PECL Inputs
* Single +5V Supply
* Automatic Power Control
* Temperature-Compensated Reference Voltage
* Complementary Enable Inputs
* Differential PECL Inputs
* Single +5V Supply
* Automatic Power Control
* Temperature-Compensated Reference Voltage
* Complementary Enable Inputs
MAX3261 Typical Application
Laser Diode Transmitters
531Mbps and 1062Mbps Fibre Channel
622Mbps SDH/SONET
Gigabit Ethernet
531Mbps and 1062Mbps Fibre Channel
622Mbps SDH/SONET
Gigabit Ethernet
MAX3261 Connection Diagram
MAX3261
PDF/DataSheet Download
- Datasheet: MAX3261
- File Size: 235538 KB
- Manufacturer: Maixm
- Click here to Download
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