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Part Number: MAX3656E
Description: The MAX3656 is a burst-mode laser driver that operates at data rates from 155Mbps up to 2.5Gbps. The l...
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MAX3656E
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General Description
MAX3656E General Description
The MAX3656 is a burst-mode laser driver that operates at data rates from 155Mbps up to 2.5Gbps. The laser driver accepts either positive-referenced emittercoupled logic (PECL) or current-mode logic (CML) data inputs and provides bias and modulation current for the laser diode. The device can switch the laser diode from a completely dark (off) condition to a full (on) condition (with proper bias and modulation currents) in less than 2ns. The MAX3656 incorporates DC-coupling between laser driver and laser diode and operates with a singlesupply voltage as low as +3.0V.
A digital automatic power-control (APC) loop is provided to maintain the average optical power over the full temperature range and lifetime. The APC loop is functional for a minimum burst on-time of 576ns and minimum burst off-time of 96ns, with no limit on the maximum burst on- or off-time. A fail monitor is provided to indicate when the APC loop can no longer maintain the average power. The MAX3656 can be configured for nonburst-mode applications (continuous mode) by connecting burst enable (BEN) high. For power saving, the MAX3656 provides enabling and disabling functionality. The modulation current can be set from 10mA to 85mA and the bias current can be set from 1mA to 70mA.
The MAX3656 is packaged in a small, 24-pin, 4mm ✕ 4mm thin QFN package and consumes only 132mW (typ), excluding bias and modulation currents.
MAX3656E Maximum Ratings
Supply Voltage, VCC.............................................-0.5V to +6.0V
Current into BIAS+, BIAS-, OUT+, OUT- ..........-20mA to +150mA
Current into MD.................................................... -5mA to +5mA
Current into FAIL...............................................-10mA to +10mA
Voltage at IN+, IN-, BEN+, BEN-, EN,
LONGB.....................................................-0.5V to (VCC + 0.5V)
Voltage at MODSET, APCSET, BIASMAX ................-0.5V to +3.0V
Voltage at OUT+, OUT-.............................+0.5V to (VCC + 1.5V)
Voltage at BIAS+, BIAS-............................+0.5V to (VCC + 0.5V)
Continuous Power Dissipation (TA = +85°C)
24-Lead Thin QFN-EP
(derate 27.8mW/°C above +85°C) .............................1805mW
Operating Ambient Temperature
Range (TA) .......................................................-40°C to +85°C
Operating Junction Temperature
Range (TJ) ......................................................-55°C to +150°C
Storage Ambient Temperature
Range (TSTG) ..................................................-55°C to +150°C
Processing Temperature (die) .........................................+400°C
Lead Temperature (soldering,10s) ..................................+300°C
Current into BIAS+, BIAS-, OUT+, OUT- ..........-20mA to +150mA
Current into MD.................................................... -5mA to +5mA
Current into FAIL...............................................-10mA to +10mA
Voltage at IN+, IN-, BEN+, BEN-, EN,
LONGB.....................................................-0.5V to (VCC + 0.5V)
Voltage at MODSET, APCSET, BIASMAX ................-0.5V to +3.0V
Voltage at OUT+, OUT-.............................+0.5V to (VCC + 1.5V)
Voltage at BIAS+, BIAS-............................+0.5V to (VCC + 0.5V)
Continuous Power Dissipation (TA = +85°C)
24-Lead Thin QFN-EP
(derate 27.8mW/°C above +85°C) .............................1805mW
Operating Ambient Temperature
Range (TA) .......................................................-40°C to +85°C
Operating Junction Temperature
Range (TJ) ......................................................-55°C to +150°C
Storage Ambient Temperature
Range (TSTG) ..................................................-55°C to +150°C
Processing Temperature (die) .........................................+400°C
Lead Temperature (soldering,10s) ..................................+300°C
MAX3656E Features
Multirate Operation from 155Mbps to 2.5Gbps
Burst Enable/Disable Delay <2ns
Burst On-Time of 576ns to Infinity
Infinite Bias-Current Hold Time Between Bursts
DC-Coupled Operation with Single +3.3V Power Supply
40mA Typical Supply Current
Programmable Bias Current from 1mA to 70mA
Programmable Modulation Current from 10mA to 85mA
Automatic Average Power Control with Failure Monitor (No CAPC Capacitor Needed)
APC Loop Initialization 3 Bursts
Burst Enable/Disable Delay <2ns
Burst On-Time of 576ns to Infinity
Infinite Bias-Current Hold Time Between Bursts
DC-Coupled Operation with Single +3.3V Power Supply
40mA Typical Supply Current
Programmable Bias Current from 1mA to 70mA
Programmable Modulation Current from 10mA to 85mA
Automatic Average Power Control with Failure Monitor (No CAPC Capacitor Needed)
APC Loop Initialization 3 Bursts
MAX3656E Typical Application
Fiber-to-the-Home (FTTH) and Fiber-to-the-Business (FTTB) Broadband Access Systems Passive Optical Network (PON) Transmitters APON, EPON, and GPON Upstream Transmitters
MAX3656E Connection Diagram
MAX3656E
PDF/DataSheet Download
- Datasheet: MAX3656E
- File Size: 752267 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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