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MAX3746

Low-Power, 622Mbps to 3.2Gbps Limiting Amplifier

Low-Power, Compact, Multirate Limiting Amplifier for SFF/SFP Applications Functions as a Data Quantizer for SONET, Fibre-Channel and Gigabit Ethernet Optical Receivers

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX3746 multirate limiting amplifier functions as a data quantizer for SONET, Fibre-Channel, and Gigabit Ethernet optical receivers. The amplifier accepts a wide range of input voltages and provides selectable-level, current-mode logic (CML) output voltages with controlled edge speeds. A received-signal-strength indicator (RSSI) is available when the MAX3746 is DC-coupled to the MAX3744/MAX3724 SFP transimpedance amplifier (TIA). A receiver consisting of the MAX3744/MAX3724 and the MAX3746 can provide up to 19dB RSSI dynamic range. Additional features include a programmable loss-of-signal (LOS) detect, an optional disable function (DISABLE), and an output-signal polarity reversal (OUTPOL). Output disable can be used to implement squelch.

The combination of the MAX3746 and the MAX3744/MAX3724 allows for the implementation of all the small-form-factor SFF-8472 digital diagnostic specifications using a standard 4-pin TO-46 header.

The MAX3746 is pin-for-pin compatible with the MAX3748A limiting amplifier and consumes 30% less power. The MAX3746 is packaged in a 3mm x 3mm, 16-pin QFN package.

Data Sheet

Download	Rev 2	(PDF, 332kB)
E-Mail

An evaluation kit is available: MAX3746EVKIT

Key Features

SFP Reference Design Available
Low 115mW Power Consumption
16-Pin QFN Package with 3mm x 3mm Footprint
70ps Rise and Fall Time
Loss-of-Signal with Programmable Threshold
RSSI Interface (with MAX3744/MAX3724 TIA)
Output Disable
Polarity Select
8.4ps_P-P Deterministic Jitter (3.2Gbps)
Improved EMI Performance
Selectable CML Output levels
Pin Compatible with MAX3748A

Applications/Uses

Fibre Channel SFF/SFP Transceiver Modules
Gigabit Ethernet SFF/SFP Transceiver Modules
Multirate OC-12 to OC-48 FEC SFF/SFP
Transceiver Modules

Key Specifications:

Limiting Amplifiers

Part Number

Target Oper. Range
(Gbps)

Data Rate
(Mbps)

V_SUPPLY
(V)

I_CC
(mA)

I/O Type

Input Sens.
(mV)

LOS Sens.
(mV)

Edge Speed
(ps)

EV Kit

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

typ

min

max

max w/pins

See Notes

MAX3746

1 to 4.5

622

3200

3.3

CML

Yes

TQFN/16

9.6

$4.89 @1k

See All Limiting Amplifiers (16)

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 Operating Circuit

Application Notes

Application Note 3290		HFAN-04.5.3: A Stressed Source for Testing 4Gbps 850nm FC Receivers
Reference Design 3376		HFRD-15.3: High-Frequency SFP Host Board (Includes Integrated RS-232 to I²C Conversion)
Application Note 3766		HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules

Reliability Reports

Reliability Report:	MAX3746.pdf
Show FIT data for:

Software/Models

MAX3746ETE SPICE Input/Output Model

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
MAX3746ETE			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3746ETE-T			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3746HETE#G16			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633FH-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3746HETE#TG16			Active	TQFN;16 pin;9.6 mm² Outline Drawing:21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633FH-3*	-40°C to +85°C	RoHS/Lead-Free: No 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

MAX3746EVKIT

Evaluation Kit for the MAX3746

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