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MAX3643

155Mbps to 2.5Gbps Burst-Mode Laser Driver

2ns Burst On/Off-Time for Any PON ONT Applications

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX3643 burst-mode laser driver provides bias and modulation current drive for PON burst-mode ONT applications. It is specifically designed for use with a low-cost external controller for the APC (and if desired, AMC) loop. A high-speed differential burst-enable input enables the driver to switch the laser from a dark (output off) condition to full on condition in less than 2ns. When BEN is inactive, typical modulation and bias currents are 5µA each.

Laser modulation current can be set from 10mA to 85mA and bias current can be set from 1mA to 70mA using the MODSET and BIASSET inputs. A sample-and-hold circuit is provided to capture the monitor diode output during short PON bursts, if needed, and the BEN high-speed signal is mirrored on an LVCMOS output to be used by the controller operating the APC/AMC loop.

The MAX3643 burst-mode laser driver is packaged in a 4mm x 4mm, 24-pin thin QFN package. It operates from -40°C to +85°C.

Data Sheet

Download	Rev 2	(PDF, 416kB)
E-Mail

An evaluation kit is available: MAX3643EVKIT

Key Features

10mA to 85mA Modulation Current
1mA to 70mA Bias Current
Monitor Diode Sample and Hold
45ps Output Transition Time
2ns Turn-On/Off Time
Reference Voltage Generator
LVPECL High-Speed Inputs (Data, Burst Enable)

Applications/Uses

1.25Gbps IEEE EPON ONT Modules
A/B/G/XGPON ONT Modules Up to 2.5Gbps

Key Specifications:

Laser Drivers

Part Number

Target Oper. Range
(Gbps)

Data Rate
(Mbps)

V_SUPPLY
(V)

I_CC
(mA)

I/O Type

I_MOD
(mA)

I_BIAS
(mA)

EV Kit

Package/Pins

Budgetary Price

min

max

typ

max

See Notes

MAX3643

1 to 4.5

155

2500

3.3

CML

LVPECL

Yes

TQFN/24

$1.94 @1k

See All Laser Drivers (24)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Application Circuit

Application Notes

Application Note 3887		MAX3643: Using the MAX3643 Laser Driver with a Low-Cost Microcontroller
Application Note 3896		HFTA-14.0 Design Challenges of GPON FEC Receivers
Reference Design 3926		HFRD-22.3: Modular GPON (MOGPON) ONT
Application Note 3927		MAX3643: Generating a TX Power Monitor in Burst Mode Applications (Using MAX3643 and the DS1863 or DS1865)
Reference Design 3933		HFRD-25.1: Ultra Low-Cost GEPON SFF ONT
Reference Design 3985		HFRD-25.2: Low-Cost GEPON SFF ONT with µC
Reference Design 3993		HFRD-26.0: GEPON SFF Host Board
Application Note 4227		HFAN-02.7.0 Reducing Laser Driver Output Noise When No Input Signal Is Applied

Reliability Reports

Reliability Report:	MAX3643.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3643ETG+			Active	TQFN;24 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0021 (PDF) Use pkgcode/variation: T2444+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3643ETG+T			Active	TQFN;24 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0021 (PDF) Use pkgcode/variation: T2444+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Evaluation Kits

MAX3643EVKIT

Evaluation Kit for the MAX3643

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