MAX3646ETG+ by Analog Devices

155Mbps to 622Mbps SFF/SFP Laser Driver with Extinction Ratio Control


The MAX3646 is a +3.3V laser driver designed for multirate transceiver modules with data rates from 155Mbps to 622Mbps. Lasers can be DC-coupled to the MAX3646 for reduced component count and ease of multirate operation. Laser extinction ratio control (ERC) combines the features of automatic power control (APC), modulation compensation, and built-in thermal compensation. The APC loop maintains constant average optical power. Modulation compensation increases the modulation current in proportion to the bias current. These control loops, combined with thermal compensation, maintain a constant optical extinction ratio over temperature and lifetime. The MAX3646 accepts differential data input signals. The wide 5mA to 60mA (up to 85mA AC-coupled) modulation current range and up to 100mA bias current range, make the MAX3646 ideal for driving FP/DFB lasers in fiber optic modules. External resistors set the required laser current levels. The MAX3646 provides transmit disable control (TX_DISABLE), single-point fault tolerance, bias-current monitoring, and photocurrent monitoring. The device also offers a latched failure output (TX_FAULT) to indicate faults, such as when the APC loop is no longer able to maintain the average optical power at the required level. The MAX3646 is compliant with the SFF-8472 transmitter diagnostic and SFP MSA timing requirements. The MAX3646 is offered in a 4mm x 4mm, 24-pin thin QFN package and operates over the extended -40°C to +85°C temperature range.

Where to Buy

Prices starting from US$2.38

Distributor Stock
Logo for Analog Devices
Analog Devices
from US$3.86
1,795
in stock
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Logo for Rochester Electronics
Rochester Electronics
from US$2.38
1,028
in stock
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Logo for Farnell UK
Farnell
from US$2.78
0
in stock
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Logo for Newark
Newark Electronics
-
0
in stock
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Features

Single +3.3V Power Supply
47mA Power-Supply Current
85mA Modulation Current
100mA Bias Current
Automatic Power Control (APC)
Modulation Compensation
On-Chip Temperature Compensation
Self-Biased Inputs for AC-Coupling
Ground-Referenced Current Monitors
Laser Shutdown and Alarm Outputs
Enable Control and Laser Safety Feature

Specifications

Target Oper. Range (Gbps) <1
Data Rate (Mbps) (min) 155
Data Rate (Mbps) (max) 622
VSUPPLY (V) 3.3
ICC (mA) (typ) 47
I/O Type CML
IMOD (mA) (max) 85
IBIAS (mA) (max) 100
Package/Pins TQFN/24
BudgetaryPrice (See Notes) 2.85

Last 6 months Inventory & Pricing History



MAX3646ETG+ Maxim Integrated Parts by Analog Devices

LASER DIODE DRIVER TQFN-24

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Laser Driver Type SFP / SFF Optical Modules
Driver Case Style TQFN
No. of Pins 24Pins
Supply Voltage Min 2.97V
Supply Voltage Max 3.63V
Product Range -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Last 6 months Inventory & Pricing History


Alternative Descriptions

155Mbps to 622Mbps SFF/SFP Las | Analog Devices
IC, LASER DRIVER, SFF/SFP, 24TQFN | Farnell
Laser Diode Driver, Tqfn-24 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX3646ETG+ ?

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Is the MAX3646ETG+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX3646ETG+ have stock available?

Authorised distributors including Analog Devices, Rochester Electronics, Farnell and Newark Electronics have stock available or on a lead time for MAX3646ETG+ .

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