MAX3799ETJ+T by Analog Devices

1Gbps to 14Gbps, SFP+ Multirate Limiting Amplifier and VCSEL Driver


The MAX3799 is a highly integrated limiting amplifier and VCSEL driver that operates up to 14Gbps, making it suitable for Ethernet and Fibre Channel applications. By providing a selectable data path with a noise-shaping filter, the MAX3799 enables a module with 10G optics to be fully compliant with both 1000BASE-SR and 10GBASE-SR specifications. Operating from a single +3.3V supply, this low-power integrated limiting amplifier and VCSEL driver IC enables a platform design for SFP MSA as well as for SFP+ MSA-based optical transceivers. The high-sensitivity limiting amplifier limits the differential input signal generated by a transimpedance amplifier into a CML-level differential output signal. The compact VCSEL driver provides a modulation and a bias current for a VCSEL diode. The optical average power is controlled by an average power control (APC) loop implemented by a controller that interfaces to the VCSEL driver through a 3-wire digital interface. All differential I/Os are optimally back-terminated for a 50Ω transmission line PCB design. The use of a 3-wire digital interface reduces the pin count while enabling advanced Rx (rate selection, LOS threshold, LOS squelch, LOS polarity, CML output level, signal path polarity, deemphasis, and fast mode-select change time) and Tx settings (modulation current, bias current, polarity, and eye safety control) without the need for external components. The MAX3799 provides multiple current and voltage DACs to allow the use of low-cost controller ICs. The MAX3799 is packaged in a lead-free, 5mm x 5mm, 32-pin TQFN package.

Where to Buy

Prices starting from US$4.35

Distributor Stock
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Farnell
from US$4.35
No stock
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Analog Devices
from US$4.54
1,599
in stock
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element14
from US$4.72
-
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Features

Enables Single-Module Design Compliance with 1000BASE-SR and 10GBASE-SR Specifications
-21.5dBm Optical Sensitivity at 1.25Gbps Using a 10.32Gbps ROSA (-19.7dBm OMA)
Low Power Dissipation of 320mW at 3.3V Power Supply
Typical Electrical Performance of 14.025Gbps on Rx/Tx (Non-Retimed 16x Fibre Channel Solution)
3mVP-P Receiver Sensitivity at 10.32Gbps
4psP-P DJ at Receiver Output at 8.5Gbps 8B/10B
4psP-P DJ at Receiver Output at 10.32Gbps 231 - 1 PRBS
26ps Rise and Fall Time at Rx/Tx Output
Rate Select for 1Gbps Mode or 10Gbps Mode
CML Output Squelch
Polarity Select for Rx and Tx
LOS Assert Level Adjustment
LOS Polarity Select
Modulation Current Up to 12mA Into 100Ω Differential Load
Bias Current Up to 15mA
Integrated Eye Safety Features
3-Wire Digital Interface
Programmable Deemphasis at Tx Output

Specifications

Target Oper. Range (Gbps) 1 to 1.252 to 14
Data Rate (Mbps) (min) 1000
Data Rate (Mbps) (max) 14000
VSUPPLY (V) 3.3
ICC (mA) (typ) 97
I/O Type CML
IMOD (mA) (max) 12
IBIAS (mA) (max) 15
Package/Pins TQFN/32
BudgetaryPrice (See Notes) 3.73


MAX3799ETJ+T Semiconductors - ICs by Analog Devices

LIMITING AMP 2.83-3.63V TQFN-32

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

Specifications

Bandwidth -
Supply Voltage Min 2.85V
Supply Voltage Max 3.63V
Amplifier Case Style TQFN
No. of Pins 32Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

1Gbps to 14Gbps, SFP+ Multirat | Analog Devices
LIMITING AMP, 2.83-3.63V, TQFN-32 | Farnell

Frequently Asked Questions

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Is the MAX3799ETJ+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Analog Devices, element14 and Farnell have stock available or on a lead time for MAX3799ETJ+T .

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