MAX3946ETG+ datasheet(2/28 Pages) MAXIM

Part #	MAX3946ETG+

Description	1.0625Gbps to 11.3Gbps, SFP Laser Driver with Laser Impedance Mismatch Tolerance

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Manufacturer	MAXIM [Maxim Integrated Products]

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2 ______________________________________________________________________________________

1.0625Gbps to 11.3Gbps, SFP+ Laser Driver

with Laser Impedance Mismatch Tolerance

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

VCC, VCCT, VCCD ................................................-0.3V to +4.0V

Current Into TOUT+ and TOUT-.................................... +100mA

Current Into TIN+ and TIN- ............................. -20mA to +20mA

Voltage Range at TIN+, TIN-,

DISABLE, SDA, SCL, CSEL, FAULT,

BMAX, BMON, and BIAS...................... -0.3V to (VCC + 0.3V)

Voltage Range at BIAS........................................................-0.3V to VCC

Voltage Range at TOUT+ and TOUT-....(VCC - 1.3V) to (VCC + 1.3V)

Current into BIAS.........................................................................+130mA

Continuous Power Dissipation (TA = +70NC)

24-Pin TQFN (derate 27.8mW/NC above +70NC).......2222mW

Storage Temperature Range .......................... -55NC to +150NC

Die Attach Temperature .................................................+400NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

ELECTRICAL CHARACTERISTICS

(VCC = +2.85V to +3.63V, TA = -40°C to +85°C, and Figure 1. Guaranteed by design and characterization from TA = -40°C to +95°C.

Typical values are at VCC = +3.3V, IBIAS = 60mA, IMOD = 40mA, 25I differential output load, and TA = +25°C, unless otherwise

noted.) (Note 1)

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY

Power-Supply Current

ICC

Excludes output current through the exter-

nal pullup inductors (Note 2)

68

90

mA

Power-Supply Voltage

VCC

2.85

3.63

V

Power-Supply Noise

DC to 10MHz

100

mVP-P

10MHz to 20MHz

10

POWER-ON RESET

VCC for Enable High

2.55

2.75

V

VCC for Enable Low

2.3

2.45

V

DATA INPUT SPECIFICATION

Input Data Rate

1

10

11.3

Gbps

Differential Input Voltage

VIN

TXEQ_EN = high, launch amplitude into

FR4 transmission line P 5.5in

0.19

0.7

VP-P

TXEQ_EN = low

0.15

1.0

Differential Input Resistance

RIN

75

100

125

I

Differential Input Return Loss

SDD11

Part powered on, f P 10GHz

12

dB

Common-Mode Input Return

Loss

SCC11

Part powered on, 1GHz P f P 10GHz

10

dB

BIAS GENERATOR

Maximum Bias Current

IBIASMAX

Current into BIAS pin, DISABLE = low, and

TX_EN = high

80

mA

Minimum Bias Current

IBIASMIN

Current into BIAS pin, DISABLE = low, and

TX_EN = high

5

mA

Bias-Off Current

IBIAS-OFF

Current into BIAS pin, DISABLE = high or

TX_EN = low or SET_BIAS = H0x00; BIAS

pin voltage at VCC

100

F

A

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